How to render edit view and post flash message in rails3

In my account controller I'd like to display (render, redirect_to ?) the edit view after changes get saved and display flash notice.

 def update
    @account = Account.find(params[:id])

    respond_to do 开发者_如何学Go|format|
      if @account.update_attributes(params[:account])
        format.html { redirect_to(@account, :notice => 'Account was successfully updated.') }

      else
        format.html { render :action => "edit" }
      end
    end
  end

By default you have to use a separate statement, e.g.

format.html { 
  flash[:notice] = 'message'
  render :edit
}

This ticket has a patch to let you use render 'edit', :notice => 'message'. It didn't get into Rails but there is a gem, flash_render, that adds it.

If you just use flash[:notice] that value will still be available in the next request. Meaning, you'll see the text on the next 2 pages. Instead use flash.now to only make the value available in the current request.

format.html { 
  flash.now[:notice] = 'message'
  render :edit
}

For reference read Action Controller Overview 5.2.1

You can still use notices like in Rails 2:

flash[:notice] = "message"

Just add the following line to the top of your view to display it:

<p id="notice"><%= flash[:notice] %></p>

And you should use render method if you don't want to make your users to fill edit forms once again.