set the currency in the plan

assets/javascripts/discourse/controllers/admin-plugins-discourse-patrons-products-show-plans-show.js.es6

@@ -2,6 +2,9 @@ import computed from "ember-addons/ember-computed-decorators";
 import DiscourseURL from "discourse/lib/url";
 
 export default Ember.Controller.extend({
+  // Also defined in settings.
+  currencies: ['AUD', 'CAD', 'EUR', 'GBP', 'USD'],
+
   @computed("model.plan.isNew")
   planFieldDisabled(isNew) {
     return !isNew;

assets/javascripts/discourse/helpers/format-currency.js.es6

@@ -1,11 +1,13 @@
 export default Ember.Helper.helper(function(params) {
   let currencySign;
 
-  switch (Discourse.SiteSettings.discourse_patrons_currency) {
+  switch (params[0]) {
     case "EUR":
+    case "eur":
       currencySign = "€";
       break;
     case "GBP":
+    case "gbp":
       currencySign = "£";
       break;
     default:

assets/javascripts/discourse/routes/admin-plugins-discourse-patrons-products-show-plans-show.js.es6

@@ -13,6 +13,7 @@ export default Discourse.Route.extend({
       plan = AdminPlan.create({
         active: true,
         isNew: true,
+        currency: Discourse.SiteSettings.discourse_patrons_currency,
         product: product.get("id")
       });
     } else {

assets/javascripts/discourse/templates/admin/plugins-discourse-patrons-products-show-plans-show.hbs

@@ -22,7 +22,12 @@
   </p>
   <p>
     <label for="amount">{{i18n 'discourse_patrons.admin.plans.plan.amount'}}</label>
-    {{input type="text" name="name" value=model.plan.amountDollars disabled=planFieldDisabled}}
+    {{#if planFieldDisabled}}
+      {{input class="plan-amount plan-currency" disabled=true value=model.plan.currency}}
+    {{else}}
+      {{combo-box disabled=planFieldDisabled content=currencies value=model.plan.currency}}
+    {{/if}}
+    {{input class="plan-amount" type="text" name="name" value=model.plan.amountDollars disabled=planFieldDisabled}}
   </p>
   <p>
     <label for="trial">