mirror of
https://github.com/TryGhost/Ghost.git
synced 2025-02-10 23:36:14 -05:00
✨Added {{link_class}} helper
- moved dynamic class logic out of {{link}} helper into shared utils
- both {{link}} and {{link_class}} use these utils
This commit is contained in:
Hannah Wolfe
Hannah Wolfe
parent
833fe49e6f
commit
b48fdaf1be
8 changed files with 404 additions and 82 deletions
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@ -23,6 +23,7 @@ coreHelpers.is = require('./is');
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coreHelpers.has = require('./has');
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coreHelpers.lang = require('./lang');
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coreHelpers.link = require('./link');
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coreHelpers.link_class = require('./link_class');
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coreHelpers.meta_description = require('./meta_description');
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coreHelpers.meta_title = require('./meta_title');
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coreHelpers.navigation = require('./navigation');
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@ -57,6 +58,7 @@ registerAllCoreHelpers = function registerAllCoreHelpers() {
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registerThemeHelper('img_url', coreHelpers.img_url);
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registerThemeHelper('lang', coreHelpers.lang);
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registerThemeHelper('link', coreHelpers.link);
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registerThemeHelper('link_class', coreHelpers.link_class);
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registerThemeHelper('meta_description', coreHelpers.meta_description);
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registerThemeHelper('meta_title', coreHelpers.meta_title);
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registerThemeHelper('navigation', coreHelpers.navigation);
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@ -1,51 +1,9 @@
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// # link helper
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const _ = require('lodash');
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const {config, SafeString} = require('./proxy');
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const {config, SafeString, errors, i18n} = require('./proxy');
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const {buildLinkClasses} = require('./utils');
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const managedAttributes = ['href', 'class', 'activeClass', 'parentActiveClass', 'tagName', 'nohref'];
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function _getHref(hash) {
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let href = hash.href || '/';
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return href.string ? href.string : href;
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}
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function _clean(url) {
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// Strips anchors and leading and trailing slashes
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return url.replace(/#.*?$/, '').replace(/^\/|\/$/g, '');
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}
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// strips trailing slashes and compares urls
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function _urlMatch(href, location) {
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if (!location) {
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return false;
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}
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const strippedHref = _clean(href);
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const strippedLocation = _clean(location);
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return strippedHref === strippedLocation;
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}
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// We want to check if the first part of the current url is a match for href
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function _parentMatch(href, location) {
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if (!location) {
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return false;
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}
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let parent = false;
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let locParts = _clean(location).split('/');
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let hrefParts = _clean(href).split('/');
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if (locParts.length <= hrefParts.length) {
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return false;
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}
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for (let i = 0; i < hrefParts.length; i += 1) {
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parent = hrefParts[i] === locParts[i];
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}
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return parent;
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}
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const managedAttributes = ['href', 'class', 'activeClass', 'parentActiveClass'];
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function _formatAttrs(attributes) {
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let attributeString = '';
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@ -64,13 +22,23 @@ module.exports = function link(options) {
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options.hash = options.hash || {};
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options.data = options.data || {};
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let href = _getHref(options.hash);
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let location = options.data.root.relativeUrl;
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let tagName = options.hash.tagName || 'a';
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let activeClass = _.has(options.hash, 'activeClass') ? options.hash.activeClass : 'nav-current';
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let parentActiveClass = _.has(options.hash, 'parentActiveClass') ? options.hash.parentActiveClass : `${activeClass || 'nav-current'}-parent`;
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let classes = options.hash.class ? options.hash.class.toString().split(' ') : [];
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let noHref = _.has(options.hash, 'nohref') ? options.hash.nohref : false;
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// If there is no href provided, this is theme dev error, so we throw an error to make this clear.
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if (!_.has(options.hash, 'href')) {
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throw new errors.IncorrectUsageError({
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message: i18n.t('warnings.helpers.link.hrefIsRequired')
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});
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}
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// If the href attribute is empty, this is probably a dynamic data problem, hard for theme devs to track down
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// E.g. {{#link for=slug}}{{/link}} in a context where slug returns an empty string
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// Error's here aren't useful (same as with empty get helper filters) so we fallback gracefully
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if (!options.hash.href) {
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options.hash.href = '';
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}
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let href = options.hash.href.string || options.hash.href;
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// Calculate dynamic properties
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let classes = buildLinkClasses(config.get('url'), href, options);
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// Remove all the attributes we don't want to do a one-to-one mapping of
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managedAttributes.forEach((attr) => {
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@ -80,20 +48,13 @@ module.exports = function link(options) {
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// Setup our one-to-one mapping of attributes;
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let attributes = options.hash;
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// Calculate dynamic properties
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let relativeHref = href.replace(config.get('url'), '');
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if (_urlMatch(relativeHref, location) && activeClass) {
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classes.push(activeClass);
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} else if (_parentMatch(relativeHref, location) && parentActiveClass) {
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classes.push(parentActiveClass);
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}
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// Prepare output
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let classString = classes.length > 0 ? `class="${classes.join(' ')}"` : '';
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let hrefString = !noHref ? `href="${href}"` : '';
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let hrefString = `href="${href}"`;
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let attributeString = _.size(attributes) > 0 ? _formatAttrs(attributes) : '';
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let openingTag = `<${tagName} ${classString} ${hrefString} ${attributeString}>`;
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let closingTag = `</${tagName}>`;
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let openingTag = `<a ${classString} ${hrefString} ${attributeString}>`;
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let closingTag = `</a>`;
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// Clean up any extra spaces
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openingTag = openingTag.replace(/\s{2,}/g, ' ').replace(/\s>/, '>');
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29
core/frontend/helpers/link_class.js
Normal file
29
core/frontend/helpers/link_class.js
Normal file
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@ -0,0 +1,29 @@
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// # link_class helper
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const _ = require('lodash');
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const {config, SafeString, errors, i18n} = require('./proxy');
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const {buildLinkClasses} = require('./utils');
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module.exports = function link_class(options) { // eslint-disable-line camelcase
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options = options || {};
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options.hash = options.hash || {};
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options.data = options.data || {};
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// If there is no for provided, this is theme dev error, so we throw an error to make this clear.
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if (!_.has(options.hash, 'for')) {
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throw new errors.IncorrectUsageError({
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message: i18n.t('warnings.helpers.link_class.forIsRequired')
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});
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}
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// If the for attribute is present but empty, this is probably a dynamic data problem, hard for theme devs to track down
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// E.g. {{link_class for=slug}} in a context where slug returns an empty string
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// Error's here aren't useful (same as with empty get helper filters) so we fallback gracefully
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if (!options.hash.for) {
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options.hash.for = '';
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}
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let href = options.hash.for.string || options.hash.for;
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let classes = buildLinkClasses(config.get('url'), href, options);
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return new SafeString(classes.join(' '));
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};
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@ -11,3 +11,58 @@ module.exports.findKey = function findKey(key /* ...objects... */) {
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return result;
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}, null);
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};
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function _urlClean(url) {
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// Strips anchors and leading and trailing slashes
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return url.replace(/#.*?$/, '').replace(/^\/|\/$/g, '');
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}
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// strips trailing slashes and compares urls
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function _urlMatch(href, location) {
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if (!location) {
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return false;
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}
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const strippedHref = _urlClean(href);
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const strippedLocation = _urlClean(location);
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return strippedHref === strippedLocation;
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}
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// We want to check if the first part of the current url is a match for href
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function _urlParentMatch(href, location) {
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if (!location) {
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return false;
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}
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let parent = false;
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let locParts = _urlClean(location).split('/');
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let hrefParts = _urlClean(href).split('/');
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if (locParts.length <= hrefParts.length) {
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return false;
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}
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for (let i = 0; i < hrefParts.length; i += 1) {
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parent = hrefParts[i] === locParts[i];
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}
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return parent;
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}
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module.exports.buildLinkClasses = function buildLinkClasses(siteUrl, href, options) {
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let relativeHref = href.replace(siteUrl, '');
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let location = options.data.root.relativeUrl;
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let classes = options.hash.class ? options.hash.class.toString().split(' ') : [];
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let activeClass = _.has(options.hash, 'activeClass') ? options.hash.activeClass : 'nav-current';
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let parentActiveClass = _.has(options.hash, 'parentActiveClass') ? options.hash.parentActiveClass : `${activeClass || 'nav-current'}-parent`;
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// Calculate dynamic properties
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if (_urlMatch(relativeHref, location) && activeClass) {
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classes.push(activeClass);
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} else if (_urlParentMatch(relativeHref, location) && parentActiveClass) {
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classes.push(parentActiveClass);
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}
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return classes;
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};
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@ -596,6 +596,12 @@
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"is": {
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"invalidAttribute": "Invalid or no attribute given to is helper"
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},
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"link": {
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"hrefIsRequired": "The \\{\\{#link\\}\\}\\{\\{/link\\}\\} helper requires an href=\"\" attribute."
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},
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"link_class": {
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"forIsRequired": "The \\{\\{link_class\\}\\} helper requires a for=\"\" attribute."
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},
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"navigation": {
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"invalidData": "navigation data is not an object or is a function",
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"valuesMustBeDefined": "All values must be defined for label, url and current",
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@ -9,7 +9,7 @@ describe('Helpers', function () {
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var hbsHelpers = ['each', 'if', 'unless', 'with', 'helperMissing', 'blockHelperMissing', 'log', 'lookup', 'block', 'contentFor'],
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ghostHelpers = [
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'asset', 'author', 'authors', 'body_class', 'concat', 'content', 'date', 'encode', 'excerpt', 'facebook_url', 'foreach', 'get',
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'ghost_foot', 'ghost_head', 'has', 'img_url', 'is', 'lang', 'link', 'meta_description', 'meta_title', 'navigation',
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'ghost_foot', 'ghost_head', 'has', 'img_url', 'is', 'lang', 'link', 'link_class', 'meta_description', 'meta_title', 'navigation',
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'next_post', 'page_url', 'pagination', 'plural', 'post_class', 'prev_post', 'reading_time', 't', 'tags', 'title', 'twitter_url',
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'url'
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],
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276
core/test/unit/helpers/link_class_spec.js
Normal file
276
core/test/unit/helpers/link_class_spec.js
Normal file
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@ -0,0 +1,276 @@
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const should = require('should');
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const helpers = require.main.require('core/frontend/helpers');
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const handlebars = require.main.require('core/frontend/services/themes/engine').handlebars;
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const configUtils = require('../../utils/configUtils');
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let defaultGlobals;
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function compile(templateString) {
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const template = handlebars.compile(templateString);
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template.with = (locals = {}, globals) => {
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globals = globals || defaultGlobals;
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return template(locals, globals);
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};
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return template;
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}
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describe('{{link_class}} helper', function () {
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before(function () {
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handlebars.registerHelper('link_class', helpers.link_class);
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handlebars.registerHelper('concat', helpers.concat);
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configUtils.config.set('url', 'https://siteurl.com');
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defaultGlobals = {
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data: {
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site: {
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url: configUtils.config.get('url')
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}
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}
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};
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});
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after(function () {
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configUtils.restore();
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});
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it('throws an error for missing for=""', function () {
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(function compileWith() {
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compile('{{link_class}}')
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.with({});
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}).should.throw();
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});
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it('silently accepts an empty for...', function () {
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compile('{{link_class for=tag.slug}}')
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.with({tag: null})
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.should.eql('');
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});
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describe('activeClass', function () {
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it('gets applied correctly', function () {
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// Test matching relative URL
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compile('{{link_class for="/about/"}}')
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.with({relativeUrl: '/about/'})
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.should.eql('nav-current');
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// Test non-matching relative URL
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compile('{{link_class for="/about/"}}')
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.with({relativeUrl: '/'})
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.should.eql('');
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});
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it('ignores anchors', function () {
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// Anchor in href
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compile('{{link_class for="/about/#me"}}')
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.with({relativeUrl: '/about/'})
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.should.eql('nav-current');
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// Anchor in relative URL
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compile('{{link_class for="/about/"}}')
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.with({relativeUrl: '/about/#me'})
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.should.eql('nav-current');
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});
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it('handles missing trailing slashes', function () {
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compile('{{link_class for="/about"}}')
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.with({relativeUrl: '/about/'})
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.should.eql('nav-current');
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});
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it('handles absolute URLs', function () {
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// Correct URL gets class
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compile('{{link_class for="https://siteurl.com/about/"}}')
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.with({relativeUrl: '/about/'})
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.should.eql('nav-current');
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// Incorrect URL doesn't get class
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compile('{{link_class for="https://othersite.com/about/"}}')
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.with({relativeUrl: '/about/'})
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.should.eql('');
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});
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it('handles absolute URL with missing trailing slash', function () {
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compile('{{link_class for="https://siteurl.com/about"}}')
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.with({relativeUrl: '/about/'})
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.should.eql('nav-current');
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});
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it('activeClass can be customised', function () {
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compile('{{link_class for="/about/" activeClass="nav-active"}}')
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.with({relativeUrl: '/about/'})
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.should.eql('nav-active');
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compile('{{link_class for="/about/" activeClass=slug}}')
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.with({relativeUrl: '/about/', slug: 'fred'})
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.should.eql('fred');
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compile('{{link_class for="/about/" activeClass=(concat slug "active" separator="-")}}')
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.with({relativeUrl: '/about/', slug: 'fred'})
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.should.eql('fred-active');
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});
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it('activeClass and other classes work together', function () {
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// Single extra class
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compile('{{link_class for="/about/" class="about"}}')
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.with({relativeUrl: '/about/'})
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.should.eql('about nav-current');
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// Multiple extra classes
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compile('{{link_class for="/about/" class="about my-link"}}')
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.with({relativeUrl: '/about/'})
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.should.eql('about my-link nav-current');
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});
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it('can disable activeClass with falsey values', function () {
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// Empty string
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compile('{{link_class for="/about/" activeClass=""}}')
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.with({relativeUrl: '/about/'})
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.should.eql('');
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// false
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compile('{{link_class for="/about/" activeClass=false}}')
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.with({relativeUrl: '/about/'})
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.should.eql('');
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});
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});
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describe('parentActiveClass', function () {
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it('gets applied correctly', function () {
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// Parent and child links with PARENT as relative URL
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compile('<li class="{{link_class for="/about/"}}">parent</li><li class="{{link_class for="/about/team/"}}">child</li>')
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.with({relativeUrl: '/about/'})
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.should.eql('<li class="nav-current">parent</li><li class="">child</li>');
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// Parent and child links with CHILD as relative URL
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compile('<li class="{{link_class for="/about/"}}">parent</li><li class="{{link_class for="/about/team/"}}">child</li>')
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.with({relativeUrl: '/about/team/'})
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.should.eql('<li class="nav-current-parent">parent</li><li class="nav-current">child</li>');
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});
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it('ignores anchors', function () {
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// Anchor in href
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// Parent and child links with PARENT as relative URL
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compile('<li class="{{link_class for="/about/#me"}}">parent</li><li class="{{link_class for="/about/team/"}}">child</li>')
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.with({relativeUrl: '/about/'})
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.should.eql('<li class="nav-current">parent</li><li class="">child</li>');
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// Parent and child links with CHILD as relative URL
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compile('<li class="{{link_class for="/about/#me"}}">parent</li><li class="{{link_class for="/about/team/"}}">child</li>')
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.with({relativeUrl: '/about/team/'})
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.should.eql('<li class="nav-current-parent">parent</li><li class="nav-current">child</li>');
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// Anchor in relative URL
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// Parent and child links with PARENT as relative URL
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compile('<li class="{{link_class for="/about/"}}">parent</li><li class="{{link_class for="/about/team/"}}">child</li>')
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.with({relativeUrl: '/about/#me'})
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.should.eql('<li class="nav-current">parent</li><li class="">child</li>');
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// Parent and child links with CHILD as relative URL
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compile('<li class="{{link_class for="/about/"}}">parent</li><li class="{{link_class for="/about/team/"}}">child</li>')
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.with({relativeUrl: '/about/team/#me'})
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.should.eql('<li class="nav-current-parent">parent</li><li class="nav-current">child</li>');
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});
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it('handles missing trailing slashes', function () {
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// Parent and child links with PARENT as relative URL
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compile('<li class="{{link_class for="/about"}}">parent</li><li class="{{link_class for="/about/team"}}">child</li>')
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.with({relativeUrl: '/about/'})
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.should.eql('<li class="nav-current">parent</li><li class="">child</li>');
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// Parent and child links with CHILD as relative URL
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compile('<li class="{{link_class for="/about"}}">parent</li><li class="{{link_class for="/about/team"}}">child</li>')
|
||||
.with({relativeUrl: '/about/team/'})
|
||||
.should.eql('<li class="nav-current-parent">parent</li><li class="nav-current">child</li>');
|
||||
});
|
||||
|
||||
it('handles absolute URLs', function () {
|
||||
// Correct URL gets class
|
||||
|
||||
// Parent and child links with PARENT as relative URL
|
||||
compile('<li class="{{link_class for="https://siteurl.com/about/"}}">parent</li><li class="{{link_class for="https://siteurl.com/about/team/"}}">child</li>')
|
||||
.with({relativeUrl: '/about/'})
|
||||
.should.eql('<li class="nav-current">parent</li><li class="">child</li>');
|
||||
|
||||
// Parent and child links with CHILD as relative URL
|
||||
compile('<li class="{{link_class for="https://siteurl.com/about/"}}">parent</li><li class="{{link_class for="https://siteurl.com/about/team/"}}">child</li>')
|
||||
.with({relativeUrl: '/about/team/'})
|
||||
.should.eql('<li class="nav-current-parent">parent</li><li class="nav-current">child</li>');
|
||||
|
||||
// Incorrect URL doesn't get class
|
||||
|
||||
// Parent and child links with PARENT as relative URL
|
||||
compile('<li class="{{link_class for="https://othersite.com/about/"}}">parent</li><li class="{{link_class for="https://othersite.com/about/team/"}}">child</li>')
|
||||
.with({relativeUrl: '/about/'})
|
||||
.should.eql('<li class="">parent</li><li class="">child</li>');
|
||||
|
||||
// Parent and child links with CHILD as relative URL
|
||||
compile('<li class="{{link_class for="https://othersite.com/about/"}}">parent</li><li class="{{link_class for="https://othersite.com/about/team/"}}">child</li>')
|
||||
.with({relativeUrl: '/about/team/'})
|
||||
.should.eql('<li class="">parent</li><li class="">child</li>');
|
||||
});
|
||||
|
||||
it('handles absolute URLs with missing trailing slashes', function () {
|
||||
// Parent and child links with PARENT as relative URL
|
||||
compile('<li class="{{link_class for="https://siteurl.com/about"}}">parent</li><li class="{{link_class for="https://siteurl.com/about/team"}}">child</li>')
|
||||
.with({relativeUrl: '/about/'})
|
||||
.should.eql('<li class="nav-current">parent</li><li class="">child</li>');
|
||||
|
||||
// Parent and child links with CHILD as relative URL
|
||||
compile('<li class="{{link_class for="https://siteurl.com/about"}}">parent</li><li class="{{link_class for="https://siteurl.com/about/team"}}">child</li>')
|
||||
.with({relativeUrl: '/about/team/'})
|
||||
.should.eql('<li class="nav-current-parent">parent</li><li class="nav-current">child</li>');
|
||||
});
|
||||
|
||||
it('parentActiveClass can be customised', function () {
|
||||
compile('<li class="{{link_class for="/about/" parentActiveClass="parent"}}">parent</li><li class="{{link_class for="/about/team/"}}">child</li>')
|
||||
.with({relativeUrl: '/about/team/'})
|
||||
.should.eql('<li class="parent">parent</li><li class="nav-current">child</li>');
|
||||
|
||||
compile('<li class="{{link_class for="/about/" parentActiveClass="parent"}}">parent</li><li class="{{link_class for="/about/team/" parentActiveClass="parent"}}">child</li>')
|
||||
.with({relativeUrl: '/about/team/'})
|
||||
.should.eql('<li class="parent">parent</li><li class="nav-current">child</li>');
|
||||
|
||||
compile('<li class="{{link_class for="/about/" parentActiveClass=slug}}">parent</li><li class="{{link_class for="/about/team/" parentActiveClass="parent"}}">child</li>')
|
||||
.with({relativeUrl: '/about/team/', slug: 'fred'})
|
||||
.should.eql('<li class="fred">parent</li><li class="nav-current">child</li>');
|
||||
|
||||
compile('<li class="{{link_class for="/about/" parentActiveClass=(concat slug "-parent")}}">parent</li><li class="{{link_class for="/about/team/" parentActiveClass="parent"}}">child</li>')
|
||||
.with({relativeUrl: '/about/team/', slug: 'fred'})
|
||||
.should.eql('<li class="fred-parent">parent</li><li class="nav-current">child</li>');
|
||||
});
|
||||
|
||||
it('customising activeClass also customises parentActiveClass', function () {
|
||||
compile('<li class="{{link_class for="/about/" activeClass="active"}}">parent</li><li class="{{link_class for="/about/team/" activeClass="active"}}">child</li>')
|
||||
.with({relativeUrl: '/about/team/'})
|
||||
.should.eql('<li class="active-parent">parent</li><li class="active">child</li>');
|
||||
|
||||
compile('<li class="{{link_class for="/about/" activeClass="active" parentActiveClass="parent"}}">parent</li><li class="{{link_class for="/about/team/" activeClass="active"}}">child</li>')
|
||||
.with({relativeUrl: '/about/team/'})
|
||||
.should.eql('<li class="parent">parent</li><li class="active">child</li>');
|
||||
});
|
||||
|
||||
it('can disable parentActiveClass with falsey values', function () {
|
||||
compile('{{link_class for="/about/" parentActiveClass=""}}')
|
||||
.with({relativeUrl: '/about/team/'})
|
||||
.should.eql('');
|
||||
|
||||
compile('{{link_class for="/about/" parentActiveClass=false}}')
|
||||
.with({relativeUrl: '/about/team/'})
|
||||
.should.eql('');
|
||||
});
|
||||
|
||||
it('disabling activeClass does not affect parentActiveClass', function () {
|
||||
compile('<li class="{{link_class for="/about/" activeClass=""}}">parent</li><li class="{{link_class for="/about/team/" activeClass=""}}">child</li>')
|
||||
.with({relativeUrl: '/about/team/'})
|
||||
.should.eql('<li class="nav-current-parent">parent</li><li class="">child</li>');
|
||||
|
||||
compile('<li class="{{link_class for="/about/" activeClass=false parentActiveClass="parent"}}">parent</li><li class="{{link_class for="/about/team/" activeClass=false}}">child</li>')
|
||||
.with({relativeUrl: '/about/team/'})
|
||||
.should.eql('<li class="parent">parent</li><li class="">child</li>');
|
||||
});
|
||||
});
|
||||
});
|
||||
|
|
@ -37,10 +37,17 @@ describe('{{link}} helper', function () {
|
|||
});
|
||||
|
||||
describe('basic behaviour: simple links without context', function () {
|
||||
it('basic <a> tag with default url', function () {
|
||||
compile('{{#link}}text{{/link}}')
|
||||
.with({})
|
||||
.should.eql('<a href="/">text</a>');
|
||||
it('throws an error for missing href=""', function () {
|
||||
(function compileWith() {
|
||||
compile('{{#link}}text{{/link}}')
|
||||
.with({});
|
||||
}).should.throw();
|
||||
});
|
||||
|
||||
it('silently accepts an empty href...', function () {
|
||||
compile('{{#link href=tag.slug}}text{{/link}}')
|
||||
.with({tag: null})
|
||||
.should.eql('<a href="">text</a>');
|
||||
});
|
||||
|
||||
it('<a> tag with a specific URL', function () {
|
||||
|
|
@ -338,19 +345,5 @@ describe('{{link}} helper', function () {
|
|||
.should.eql('<a class="parent" href="/about/">parent</a><a href="/about/team/">child</a>');
|
||||
});
|
||||
});
|
||||
|
||||
describe('custom tag', function () {
|
||||
it('can change tag', function () {
|
||||
compile('{{#link href="/about/" class="my-class" tagName="li"}}text{{/link}}')
|
||||
.with({relativeUrl: '/about/'})
|
||||
.should.eql('<li class="my-class nav-current" href="/about/">text</li>');
|
||||
});
|
||||
|
||||
it('can change tag and disable href', function () {
|
||||
compile('{{#link href="/about/" class="my-class" tagName="li" nohref=true}}text{{/link}}')
|
||||
.with({relativeUrl: '/about/'})
|
||||
.should.eql('<li class="my-class nav-current">text</li>');
|
||||
});
|
||||
});
|
||||
});
|
||||
});
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue