Question

I have signup form on my home screen. If user inputs invalid data I redirect him to /signin page. On this page I can see filled fields, but errors descriptions are empty.

Here is my UsersController:

class UsersController < ApplicationController
  def new
    @user = User.new(params[:user])
  end

  def create
    @user = User.new(params[:user])
    print @user
    if  @user.save

    else
      render 'new'
    end
  end
end

Method I use to show errors

module ApplicationHelper

  def errors_for(model, attribute)
    if model.errors[attribute].present?
      content_tag :div, :class => 'well error' do
        content_tag :ul do
          model.errors[attribute].collect {|item| concat(content_tag(:li, item))}

        end
      end
    end
  end
end

My form partial:

<%= f.label :user_name %>
<%= f.text_field :user_name, :class=>"input-medium" %>
<%= errors_for(@user, :user_name) %>

<%= f.label :email %>

<%= f.text_field :email, :class=>"input-medium " %>

<%= errors_for(@user, :email) %>

<%= f.label :password %>

<%= f.password_field :password, :class=>"input-medium" %>

<%= f.label :password_confirmation, "Confirmation" %>

<%= f.password_field :password_confirmation, :class=>"input-medium" %>

and my signup view:

<section class="centered user-form-container">
  <div class="user-form well pull-left">
    <div class="centered">
      <h1>Sign up</h1>
      <%= form_for(@user, :action=>"create") do |f| %>
          <%= render 'signup', :f=>f %>
          <%= f.submit "Sign up" %>

      <% end %>
    </div>
  </div>

</section>

Answer 1

  def new
    @user = User.new(params[:user])
    if (!params[:user].nil?)
      @user.valid?
    end


  end