Allow selection of category property type

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

@@ -4,11 +4,13 @@ export default Ember.Component.extend({
   classNames: 'wizard-custom-field',
   isDropdown: Ember.computed.equal('field.type', 'dropdown'),
   isUpload: Ember.computed.equal('field.type', 'upload'),
+  isCategory: Ember.computed.equal('field.type', 'category'),
   disableId: Ember.computed.not('field.isNew'),
   choicesTypes: ['translation', 'preset', 'custom'],
   choicesTranslation: Ember.computed.equal('field.choices_type', 'translation'),
   choicesPreset: Ember.computed.equal('field.choices_type', 'preset'),
   choicesCustom: Ember.computed.equal('field.choices_type', 'custom'),
+  categoryPropertyTypes: ['id', 'slug'],
 
   @computed('field.type')
   isInput: (type) => type === 'text' || type === 'textarea',

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

@@ -134,3 +134,14 @@
     </div>
   </div>
 {{/if}}
+
+{{#if isCategory}}
+  <div class="setting">
+    <div class="setting-label">
+      <h3>{{i18n 'admin.wizard.field.property'}}</h3>
+    </div>
+    <div class="setting-value">
+      {{combo-box content=categoryPropertyTypes value=field.property}}
+    </div>
+  </div>
+{{/if}}

assets/javascripts/wizard/components/wizard-field-category.js.es6

@@ -4,6 +4,11 @@ export default Ember.Component.extend({
   @observes('categories')
   setValue() {
     const categories = this.get('categories');
-    this.set('field.value', categories.map(c => c.id));
+    if (categories.length) {
+      const limit = this.get('field.limit');
+      const property = this.get('field.property') || 'id';
+      let value = limit === 1 ? categories[0][property] : categories.map(c => c[property]);
+      this.set('field.value', value);
+    }
   }
 });

config/locales/client.en.yml

@@ -112,6 +112,7 @@ en:
           tag: "Tag"
           category: "Category"
           limit: "Limit"
+          property: "Property"
         action:
           header: "Actions<sup>*</sup>"
           include: "Include Fields"

lib/builder.rb

@@ -210,6 +210,10 @@ class CustomWizard::Builder
     if field_template['type'] === 'category' || field_template['type'] === 'tag'
       params[:limit] = field_template['limit']
     end
+    
+    if field_template['type'] === 'category'
+      params[:property] = field_template['property']
+    end
 
     field = step.add_field(params)
 

lib/wizard_edits.rb

@@ -23,7 +23,7 @@ require_dependency 'wizard/step'
 end
 
 ::Wizard::Field.class_eval do
-  attr_reader :label, :description, :image, :key, :min_length, :file_types, :limit
+  attr_reader :label, :description, :image, :key, :min_length, :file_types, :limit, :property
   attr_accessor :dropdown_none
 
   def initialize(attrs)
@@ -40,6 +40,7 @@ end
     @dropdown_none = attrs[:dropdown_none]
     @file_types = attrs[:file_types]
     @limit = attrs[:limit]
+    @property = attrs[:property]
   end
 
   def label
@@ -176,7 +177,7 @@ end
 end
 
 ::WizardFieldSerializer.class_eval do
-  attributes :dropdown_none, :image, :file_types, :limit
+  attributes :dropdown_none, :image, :file_types, :limit, :property
 
   def label
     return object.label if object.label.present?
@@ -211,4 +212,8 @@ end
   def limit
     object.limit
   end
+  
+  def property
+    object.property
+  end
 end