FIX: Missing category edit icon.

Follow-up to 0e4b8c5318

app/models/site.rb

@@ -67,14 +67,14 @@ class Site
 
       self.class.all_categories_cache.each do |category|
         if @guardian.can_see_serialized_category?(category_id: category[:id], read_restricted: category[:read_restricted])
-          categories << OpenStruct.new(category)
+          categories << category
         end
       end
 
       with_children = Set.new
       categories.each do |c|
-        if c.parent_category_id
-          with_children << c.parent_category_id
+        if c[:parent_category_id]
+          with_children << c[:parent_category_id]
         end
       end
 
@@ -91,13 +91,19 @@ class Site
       default_notification_level = CategoryUser.default_notification_level
 
       categories.each do |category|
-        category.notification_level = notification_levels[category.id] || default_notification_level
-        category.permission = CategoryGroup.permission_types[:full] if allowed_topic_create&.include?(category.id) || @guardian.is_admin?
-        category.has_children = with_children.include?(category.id)
-        by_id[category.id] = category
+        category[:notification_level] = notification_levels[category[:id]] || default_notification_level
+        category[:permission] = CategoryGroup.permission_types[:full] if allowed_topic_create&.include?(category[:id]) || @guardian.is_admin?
+        category[:has_children] = with_children.include?(category[:id])
+
+        category[:can_edit] = @guardian.can_edit_serialized_category?(
+          category_id: category[:id],
+          read_restricted: category[:read_restricted]
+        )
+
+        by_id[category[:id]] = category
       end
 
-      categories.reject! { |c| c.parent_category_id && !by_id[c.parent_category_id] }
+      categories.reject! { |c| c[:parent_category_id] && !by_id[c[:parent_category_id]] }
       categories
     end
   end

app/serializers/site_category_serializer.rb

@@ -32,5 +32,4 @@ class SiteCategorySerializer < BasicCategorySerializer
   def required_tag_group_name
     object.required_tag_group&.name
   end
-
 end

lib/guardian/category_guardian.rb

@@ -22,6 +22,15 @@ module CategoryGuardian
     )
   end
 
+  def can_edit_serialized_category?(category_id:, read_restricted:)
+    is_admin? ||
+    (
+      SiteSetting.moderators_manage_categories_and_groups &&
+      is_moderator? &&
+      can_see_serialized_category?(category_id: category_id, read_restricted: read_restricted)
+    )
+  end
+
   def can_delete_category?(category)
     can_edit_category?(category) &&
     category.topic_count <= 0 &&

spec/models/site_spec.rb

@@ -54,11 +54,11 @@ describe Site do
   it "returns correct notification level for categories" do
     category = Fabricate(:category)
     guardian = Guardian.new
-    expect(Site.new(guardian).categories.last.notification_level).to eq(1)
+    expect(Site.new(guardian).categories.last[:notification_level]).to eq(1)
     SiteSetting.mute_all_categories_by_default = true
-    expect(Site.new(guardian).categories.last.notification_level).to eq(0)
+    expect(Site.new(guardian).categories.last[:notification_level]).to eq(0)
     SiteSetting.default_categories_tracking = category.id.to_s
-    expect(Site.new(guardian).categories.last.notification_level).to eq(1)
+    expect(Site.new(guardian).categories.last[:notification_level]).to eq(1)
   end
 
   describe '#categories' do
@@ -67,13 +67,13 @@ describe Site do
     fab!(:guardian) { Guardian.new(user) }
 
     it "omits read restricted categories" do
-      expect(Site.new(guardian).categories.map(&:id)).to contain_exactly(
+      expect(Site.new(guardian).categories.map { |c| c[:id] }).to contain_exactly(
         SiteSetting.uncategorized_category_id, category.id
       )
 
       category.update!(read_restricted: true)
 
-      expect(Site.new(guardian).categories.map(&:id)).to contain_exactly(
+      expect(Site.new(guardian).categories.map { |c| c[:id] }).to contain_exactly(
         SiteSetting.uncategorized_category_id
       )
     end
@@ -83,13 +83,13 @@ describe Site do
       category.update!(read_restricted: true)
       category.groups << group
 
-      expect(Site.new(guardian).categories.map(&:id)).to contain_exactly(
+      expect(Site.new(guardian).categories.map { |c| c[:id] }).to contain_exactly(
         SiteSetting.uncategorized_category_id
       )
 
       group.add(user)
 
-      expect(Site.new(Guardian.new(user)).categories.map(&:id)).to contain_exactly(
+      expect(Site.new(Guardian.new(user)).categories.map { |c| c[:id] }).to contain_exactly(
         SiteSetting.uncategorized_category_id, category.id
       )
     end
@@ -104,9 +104,8 @@ describe Site do
 
       expect(Site.new(guardian)
           .categories
-          .keep_if { |c| c.name == category.name }
-          .first
-          .permission)
+          .keep_if { |c| c[:name] == category.name }
+          .first[:permission])
         .not_to eq(CategoryGroup.permission_types[:full])
 
       # If a parent category is not visible, the child categories should not be returned
@@ -138,6 +137,22 @@ describe Site do
     ensure
       Site.preloaded_category_custom_fields.clear
     end
+
+    it 'sets the can_edit field for categories correctly' do
+      categories = Site.new(Guardian.new).categories
+
+      expect(categories.map { |c| c[:can_edit] }).to contain_exactly(false, false)
+
+      site = Site.new(Guardian.new(Fabricate(:moderator)))
+
+      expect(site.categories.map { |c| c[:can_edit] }).to contain_exactly(false, false)
+
+      SiteSetting.moderators_manage_categories_and_groups = true
+
+      site = Site.new(Guardian.new(Fabricate(:moderator)))
+
+      expect(site.categories.map { |c| c[:can_edit] }).to contain_exactly(true, true)
+    end
   end
 
   it "omits groups user can not see" do