Ruby on Rails Tutorial (3rd Ed.)

Author:Michael Hartl
Language: eng
Format: epub
Publisher: Softcover

class UsersController < ApplicationController . . . def create @user = User.new(user_params) if @user.save flash[:success] = "Welcome to the Sample App!" redirect_to @user else render 'new' end end private def user_params params.require(:user).permit(:name, :email, :password, :password_confirmation) end end

By assigning a message to the flash, we are now in a position to display the message on the first page after the redirect. Our method is to iterate through the flash and insert all relevant messages into the site layout. You may recall the console example in Section 4.3.3, where we saw how to iterate through a hash using the strategically named flash variable:

$ rails console >> flash = { success: "It worked!", danger: "It failed." } => {:success=>"It worked!", danger: "It failed."} >> flash.each do |key, value| ?> puts "#{key}" ?> puts "#{value}" >> end success It worked! danger It failed.

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