Merge branch '7811-categories' into develop

app/controllers/admin/categories_controller.rb

@@ -0,0 +1,91 @@
+##
+# Display and administer categories
+#
+class Admin::CategoriesController < AdminController
+  include TranslatableParams
+
+  before_action :set_root, expect: [:destroy, :reorder]
+  before_action :set_category, only: [:edit, :update, :destroy, :reorder]
+
+  def index
+  end
+
+  def new
+    @category = Category.new
+    @category.build_all_translations
+  end
+
+  def create
+    @category = Category.new(category_params)
+    if @category.save
+      flash[:notice] = 'Category was successfully created.'
+      redirect_to admin_categories_path
+    else
+      @category.build_all_translations
+      render action: 'new'
+    end
+  end
+
+  def edit
+    @category.build_all_translations
+  end
+
+  def update
+    if @category.update(category_params)
+      flash[:notice] = 'Category was successfully updated.'
+      redirect_to admin_categories_path
+    else
+      @category.build_all_translations
+      render action: 'edit'
+    end
+  end
+
+  def destroy
+    @category.destroy
+    flash[:notice] = 'Category was successfully destroyed.'
+    redirect_to admin_categories_path
+  end
+
+  def reorder
+    transaction = reorder_categories(params[:categories])
+    if transaction[:success]
+      head :ok
+    else
+      render plain: transaction[:error], status: :unprocessable_entity
+    end
+  end
+
+  private
+
+  def reorder_categories(category_ids)
+    error = nil
+    ActiveRecord::Base.transaction do
+      category_ids.each_with_index do |id, index|
+        CategoryRelationship.find_by!(parent_id: @category.id, child_id: id).
+          update(position: index + 1)
+      rescue ActiveRecord::RecordNotFound
+        error = "Couldn't find Category #{id}"
+        raise ActiveRecord::Rollback
+      end
+    end
+    { success: error.nil?, error: error }
+  end
+
+  def category_params
+    category_params = translatable_params(
+      params.require(:category),
+      translated_keys: [:locale, :title, :description],
+      general_keys: [:category_tag, :parent_ids]
+    )
+    category_params[:parent_ids] ||= [@root.id]
+    category_params
+  end
+
+  def set_root
+    @root = Category.public_body_root
+  end
+
+  def set_category
+    @category = Category.find(params[:id])
+  end
+end