FIX: limit wizard fields to category fields for custom categories

assets/javascripts/discourse/components/wizard-custom-action.js.es6

@@ -56,6 +56,12 @@ export default Ember.Component.extend({
   builderWizardFields(fields) {
     return fields.map((f) => ` w{${f.id}}`);
   },
+  
+  @computed('availableFields')
+  categoryFields(fields) {
+    console.log(fields);
+    return fields.filter(f => f.type == 'category');
+  },
 
   @computed()
   builderUserFields() {

assets/javascripts/discourse/components/wizard-custom-step.js.es6

@@ -63,7 +63,8 @@ export default Ember.Component.extend({
         let stepFields = s.fields.map((f) => {
           return Ember.Object.create({
             id: f.id,
-            label: `${f.id} (${s.id})`
+            label: `${f.id} (${s.id})`,
+            type: f.type
           });
         });
         fields.push(...stepFields);

assets/javascripts/discourse/templates/components/wizard-custom-action.hbs

@@ -88,7 +88,7 @@
               <span>{{i18n 'admin.wizard.action.custom_category.wizard_field'}}</span>
               {{#if action.custom_category_wizard_field}}
                 {{combo-box value=action.category_id
-                            content=availableFields
+                            content=categoryFields
                             nameProperty="label"
                             none='admin.wizard.select_field'}}
               {{/if}}
@@ -264,7 +264,3 @@
     </div>
   </div>
 {{/if}}
-
-{{#if openComposer}}
-  
-{{/if}}