init project

app/controllers/admins/abouts_controller.rb

@@ -0,0 +1,18 @@
+class Admins::AboutsController < Admins::BaseController
+  def edit
+    current_doc
+  end
+
+  def update
+    current_doc.update!(about_us: params[:about_us])
+
+    flash[:success] = '保存成功'
+    redirect_to edit_admins_about_path
+  end
+
+  private
+
+  def current_doc
+    @doc ||= Help.first || Help.create
+  end
+end