FIX: enable_accepted_answers state was not correctly displayed (#82)

assets/javascripts/discourse/connectors/category-custom-settings/solved-settings.hbs

@@ -1,11 +1,15 @@
 {{#unless siteSettings.allow_solved_on_all_topics}}
-<h3>{{i18n 'solved.title'}}</h3>
-<section class='field'>
-  <div class="enable-accepted-answer">
-    <label class="checkbox-label">
-      {{input type="checkbox" checked=category.enable_accepted_answers}}
-      {{i18n 'solved.allow_accepted_answers'}}
-    </label>
-  </div>
-</section>
+  <h3>{{i18n 'solved.title'}}</h3>
+  <section class='field'>
+    <div class="enable-accepted-answer">
+      <label class="checkbox-label">
+        {{input
+          type="checkbox"
+          checked=(readonly category.enable_accepted_answers)
+          change=(action "onChangeSetting" value="target.checked")
+        }}
+        {{i18n 'solved.allow_accepted_answers'}}
+      </label>
+    </div>
+  </section>
 {{/unless}}

assets/javascripts/discourse/connectors/category-custom-settings/solved-settings.js.es6

@@ -0,0 +1,10 @@
+export default {
+  actions: {
+    onChangeSetting(value) {
+      this.set(
+        "category.custom_fields.enable_accepted_answers",
+        value ? "true" : "false"
+      );
+    }
+  }
+};

assets/javascripts/discourse/pre-initializers/extend-category-for-solved.js.es6

@@ -10,13 +10,8 @@ export default {
       enable_accepted_answers: Ember.computed(
         "custom_fields.enable_accepted_answers",
         {
-          get(enableField) {
-            return enableField === "true";
-          },
-          set(value) {
-            value = value ? "true" : "false";
-            this.set("custom_fields.enable_accepted_answers", value);
-            return value;
+          get(fieldName) {
+            return Ember.get(this.custom_fields, fieldName) === "true";
           }
         }
       )