CODEWITHSUNDEEP
ruby-on-railsrubyvalidationvalidationerror
Francisco Rupto
Francisco Rupto

Reputation: 13

Can't seem able to show validation errors on rails

I've been reading rails and ruby tutorials and just got started with my first project. Everything is going well but I'm having a problem showing validation errors for new users. This is my controller code:

class UsersController < ApplicationController

  def new
    @user = User.new
  end
  def create
    @user = User.new(user_params)
    if @user.save
      redirect_to ''
    else
      redirect_to '/signup'
    end
  end
  private
  def user_params
    params.require(:user).permit(:name, :lastname, :nickname, :email, :password)
  end
end

And this is my form. I'm omitting all inputs but the nickname one, because I'm testing the validation with it.

<%= form_for(@user) do |f| %>
   <div class='form-group'>
      <%= f.text_field :nickname, :placeholder => "User name", :class => "form-control", :required => true, :minlength => "2", :maxlength => "24" %>
        <div class="text-danger">
          <%= @user.errors[:nickname][0] %>
        </div>
    </div>
<% end %>

I just show the first related error to see if it's working, and avoid any Ifs that would make me doubt if it works or not. The validation on the class is:

class User < ApplicationRecord
  has_many :books
  has_secure_password
  validates :nickname, uniqueness: true
end

When I create a new user by console and try to save it with the same nickname as another it wont save, so the validation works fine. But no error is shown in the view, it just goes back to the signup form and that's all. I'm using ruby 2.2.6 and rails 5.0.1. If I'm missing anything let me know.

Upvotes: 1

Views: 171

Answers (1)

Slava.K
Slava.K

Reputation: 3080

Instead of redirect render new action template:

  def create
    @user = User.new(user_params)
    if @user.save
      redirect_to ''
    else
      render 'new'
    end
  end

When you do redirect you loose @user object that contains validation errors. That is why they are not visible in view

Upvotes: 3

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