Ruby on Rails Form Submission Error and Success Messages - ruby-on-rails

Question

I'm creating a landing page and I have two forms on my root page (trying to create a landing page). Very new to ruby on rails so forgive me because I'm going to explain this terribly.
The landing page controller (landing_controller) looks like this:
class LandingController < ApplicationController
def index
#email = Email.new
#design = Design.new
end
end
The emails_controller (emails_controller) looks like this:
class EmailsController < ApplicationController
protect_from_forgery with: :exception
def new
#email = Email.new
end
def create
#email = Email.new(params[email_params])
respond_to do |format|
if #email.save
format.html { redirect_to(root_path, :notice => 'Thank You For Subscribing!') }
format.json { render json: Email.create(email_params) }
else
format.html { redirect_to(root_path)}
format.json { render :json => #email.errors, :status => :unprocessable_entity }
end
end
end
private
def email_params
params.require(:email).permit(:username, :email)
end
end
and the designs controller (designs_controller) looks pretty much the same as emails_controller.
Then I have some validation in the email.rb model:
class Email < ActiveRecord::Base
validates :username, :presence => true
validates :email, :presence => true
end
And again the design.rb looks pretty much the same.
The form I have on the landing page (root_path) index looks like this:
<%= form_for #email, url: emails_path, html: {class: "email-form"} do |f| %>
<% if #email.errors.any? %>
<h3>Error</h3>
<ul>
<% #email.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
<% end %>
<h2>Receive Notifications</h2>
<%= f.text_field :username, :class => 'email-box', :placeholder => "First Name", :autocomplete => :off %>
<%= f.text_field :email , :class => 'email-box', :placeholder => "Email", :autocomplete => :off %>
<%= f.submit "Subscribe", :class => 'email-submit' %>
<p class="info">- We'll update ​you ​when ​we launch our new website</p>
<% end %>
When I submit the form breaking the validation I get no errors and if I submit the form following the validation rules I don't know if it creates a new entry in the database. If anyone can help I'd be very appreciative.

Answer 1

you need to render the landing controller index action rather than redirecting to it. because on redirection, it does #email = Email.new and all the errors are gone for email. try this as create action in your emails controller
def create
#email = Email.new(email_params)
respond_to do |format|
if #email.save
format.html { redirect_to root_path, notice: 'Thank You For Subscribing!' }
format.json { render json: Email.create(email_params) }
else
#design = Design.new
format.html { render "landing/index" }
format.json { render :json => #email.errors, :status => :unprocessable_entity }
end
end
end
for success or errors messages, put this in your application.html.erb
<% if flash[:error].present? %>
<p class='flash-error'><%= flash[:error] %></p>
<% end %>
<% if flash[:notice].present? %>
<p class='flash-notice'><%= flash[:notice] %></p>
<% end %>