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Adds handlerbars helper 'foreach'

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Function allows you to iterate through an array or object  in handlebars
Sets Key Values for @first/ @last entry and @odd/@even to true/false
This commit is contained in:
cobbspur 2013-06-16 14:12:28 +01:00
parent 17c8c02eae
commit b9e1ddcb2e
1 changed files with 72 additions and 0 deletions
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72
core/frontend/helpers/index.js
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@ -5,6 +5,7 @@
moment = require('moment'), moment = require('moment'),
when = require('when'), when = require('when'),
navHelper = require('./ghostNav'), navHelper = require('./ghostNav'),
hbs = require('express-hbs'),
coreHelpers; coreHelpers;
coreHelpers = function (ghost) { coreHelpers = function (ghost) {
@ -44,6 +45,77 @@
return JSON.stringify(object); return JSON.stringify(object);
}); });
ghost.registerThemeHelper('foreach', function (context, options) {
var fn = options.fn,
inverse = options.inverse,
i = 0,
j = 0,
key,
ret = "",
data;
if (options.data) {
data = hbs.handlebars.createFrame(options.data);
}
if (context && typeof context === 'object') {
if (context instanceof Array) {
for (j = context.length; i < j; i += 1) {
if (data) {
data.index = i;
data.first = data.last = data.even = data.odd = false;
if (i === 0) {
data.first = true;
}
if (i === j - 1) {
data.last = true;
}
// first post is index zero but still needs to be odd
if (i % 2 === 1) {
data.even = true;
} else {
data.odd = true;
}
}
ret = ret + fn(context[i], { data: data });
}
} else {
for (key in context) {
if (context.hasOwnProperty(key)) {
j += 1;
}
}
for (key in context) {
if (context.hasOwnProperty(key)) {
if (data) {
data.key = key;
data.first = data.last = data.even = data.odd = false;
if (i === 0) {
data.first = true;
}
if (i === j - 1) {
data.last = true;
}
// first post is index zero but still needs to be odd
if (i % 2 === 1) {
data.even = true;
} else {
data.odd = true;
}
}
ret = ret + fn(context[key], {data: data});
i += 1;
}
}
}
}
if (i === 0) {
ret = inverse(this);
}
return ret;
});
return when.all([ return when.all([
// Just one async helper for now, but could be more in the future // Just one async helper for now, but could be more in the future
navHelper.registerWithGhost(ghost) navHelper.registerWithGhost(ghost)