add homepage for legislation processes

app/controllers/admin/legislation/homepages_controller.rb

@@ -0,0 +1,36 @@
+class Admin::Legislation::HomepagesController < Admin::Legislation::BaseController
+  include Translatable
+
+  load_and_authorize_resource :process, class: "Legislation::Process"
+
+  def edit
+  end
+
+  def update
+    if @process.update(process_params)
+      link = legislation_process_path(@process).html_safe
+      redirect_to :back, notice: t('admin.legislation.processes.update.notice', link: link)
+    else
+      flash.now[:error] = t('admin.legislation.processes.update.error')
+      render :edit
+    end
+  end
+
+  private
+
+    def process_params
+      params.require(:legislation_process).permit(allowed_params)
+    end
+
+    def allowed_params
+      [
+        :homepage,
+        :homepage_enabled,
+        translation_params(::Legislation::Process)
+      ]
+    end
+
+    def resource
+      @process || ::Legislation::Process.find(params[:id])
+    end
+end