Added error handling for price modal

refs https://github.com/TryGhost/Team/issues/678

Covers error handling for missing name/amount/billing period for a price modal when adding a new price or editing existing price.

ghost/admin/app/components/modal-product-price.hbs

@@ -9,7 +9,7 @@
 <div class="modal-body">
     <div class="gh-main-section-block">
         <div class="gh-main-section-content grey gh-product-priceform-block">
-            <GhFormGroup @errors={{this.price.errors}} @hasValidated={{this.price.hasValidated}} @property="name">
+            <GhFormGroup @errors={{this.errors}} @property="name">
                 <label for="name" class="fw6">Name</label>
                 <GhTextInput
                     @value={{readonly this.price.nickname}}
@@ -17,9 +17,9 @@
                     @name="name"
                     @id="name"
                     @class="gh-input" />
-                <GhErrorMessage @errors={{this.price.errors}} @property="name" />
+                <GhErrorMessage @errors={{this.errors}} @property="name" />
             </GhFormGroup>
-            <GhFormGroup @errors={{this.price.errors}} @hasValidated={{this.price.hasValidated}} @property="description">
+            <GhFormGroup @errors={{this.errors}} @property="description">
                 <label for="description" class="fw6">Description</label>
                 <GhTextInput
                     @value={{readonly this.price.description}}
@@ -27,20 +27,21 @@
                     @name="description"
                     @id="description"
                     @class="gh-input" />
-                <GhErrorMessage @errors={{this.price.errors}} @property="description" />
+                <GhErrorMessage @errors={{this.errors}} @property="description" />
             </GhFormGroup>
             <div class="gh-product-priceform-pricecurrency">
-                <GhFormGroup @errors={{this.price.errors}} @hasValidated={{this.price.hasValidated}} @property="price">
+                <GhFormGroup @errors={{this.errors}} @property="amount">
-                    <label for="price" class="fw6">Price</label>
+                    <label for="amount" class="fw6">Price</label>
                     <div class="flex items-center justify-center gh-labs-price-label">
                         <GhTextInput
+                            @id="amount"
                             @value={{this.price.amount}}
                             @type="number"
                             @disabled={{this.isExistingPrice}}
                             @input={{action "setAmount" value="target.value"}}
                         />
                     </div>
-                    <GhErrorMessage @errors={{this.price.errors}} @property="price" />
+                    <GhErrorMessage @errors={{this.errors}} @property="amount" />
                 </GhFormGroup>
                 <GhFormGroup @class="for-select">
                     <label class="fw6 f8"for="currency">Plan currency</label>
@@ -65,6 +66,7 @@
                     @triggerId="period-input"
                     @value={{this.price.interval}} @disabled={{this.isExistingPrice}}
                 />
+                <GhErrorMessage @errors={{this.errors}} @property="interval" />
             </GhFormGroup>
         </div>
     </div>

ghost/admin/app/components/modal-product-price.js

@@ -1,7 +1,8 @@
+import EmberObject, {action} from '@ember/object';
 import ModalBase from 'ghost-admin/components/modal-base';
 import classic from 'ember-classic-decorator';
-import {action} from '@ember/object';
 import {currencies} from 'ghost-admin/utils/currency';
+import {isEmpty} from '@ember/utils';
 import {task} from 'ember-concurrency-decorators';
 import {tracked} from '@glimmer/tracking';
 
@@ -12,6 +13,7 @@ export default class ModalProductPrice extends ModalBase {
     @tracked price;
     @tracked currencyVal;
     @tracked periodVal;
+    @tracked errors = EmberObject.create();
 
     init() {
         super.init(...arguments);
@@ -80,7 +82,10 @@ export default class ModalProductPrice extends ModalBase {
 
     @task({drop: true})
     *savePrice() {
-        try {
+        this.validatePriceData();
+        if (!isEmpty(this.errors) && Object.keys(this.errors).length > 0) {
+            return;
+        }
         const priceObj = {
             ...this.price,
             amount: (this.price.amount || 0) * 100
@@ -92,11 +97,26 @@ export default class ModalProductPrice extends ModalBase {
             priceObj.type = 'recurring';
         }
         yield this.confirm(priceObj);
-        } catch (error) {
-            this.notifications.showAPIError(error, {key: 'price.save.failed'});
-        } finally {
         this.send('closeModal');
     }
+
+    validatePriceData() {
+        this.errors = EmberObject.create();
+        if (!this.price.nickname) {
+            this.errors.set('name', [{
+                message: 'Please enter name'
+            }]);
+        }
+        if (isNaN(this.price.amount)) {
+            this.errors.set('amount', [{
+                message: 'Please enter amount'
+            }]);
+        }
+        if (!this.price.interval || !['month', 'year'].includes(this.price.interval)) {
+            this.errors.set('interval', [{
+                message: 'Please enter billing interval'
+            }]);
+        }
     }
 
     actions = {

ghost/admin/app/controllers/settings/product.js

@@ -168,7 +168,11 @@ export default class ProductController extends Controller {
             return;
         }
         yield this.settings.save();
-        return yield this.product.save();
+        const response = yield this.product.save();
+        if (this.showPriceModal) {
+            this.closePriceModal();
+        }
+        return response;
     }
 
     _validateSignupRedirect(url, type) {