section improvements, area elements mostly

app/controllers/suppliers/section_areas_controller.rb

@@ -0,0 +1,36 @@
+module Suppliers
+  class SectionAreasController < Suppliers::ApplicationController
+    def index
+      @section_areas = SectionArea.for_supplier(current_supplier)
+      render json: @section_areas, each_serializer: Suppliers::SectionAreaSerializer
+    end
+
+    def create
+      @section_area.supplier = current_supplier
+      if @section_area.save
+        render json: @section_area, serializer: Suppliers::SectionAreaSerializer
+      else
+        render json: {errors: @section.errors}, status: :unprocessable_entity
+      end
+    end
+
+    def update
+      if @section_area.update_attributes section_area_params
+        render json: @section_area, serializer: Suppliers::SectionAreaSerializer
+      else
+        render json: {errors: @section.errors}, status: :unprocessable_entity
+      end
+    end
+
+    def destroy
+      @section_area.destroy
+      head :ok
+    end
+
+    private
+
+    def section_area_params
+      params.require(:section_area).permit %i[title width height position_x position_y section_id rounded]
+    end
+  end
+end