CODEWITHSUNDEEP
ruby-on-railsrubyemail
ermolushka
ermolushka

Reputation: 27

How to validate email on backend (Rails) and allow not to fill this field in the form?

I'm working on a simple one-page contact form. Contact model have two attributes: phone and email. Email should be validated on backend (i did it in my model). But user can fill either email or phone in the contact form and send it. No Email field in necessary and i don't know how to make it optional.

contact.rb

class Contact < MailForm::Base
attribute :phone
attribute :email,     :validate => /\A([\w\.%\+\-]+)@([\w\-]+\.)+([\w]{2,})\z/i, 
                      presence: false

def headers
  {
    :subject => "My Contact Form",
    :to => "[email protected]",
    :from => %("#{phone}" <#{email}>)
  }
end

end

contacts_controller.rb

class ContactsController < ApplicationController

   def new
     @contact = Contact.new
   end

   def create
     @contact = Contact.new(contact_params)
     @contact.request = request
     if @contact.deliver
       flash.now[:notice] = 'Ваша заявка принята!'
       render :new
     else
       flash.now[:notice] = 'Введите корректный email.'
       render :new
     end
   end

  private

  def contact_params
    params.require(:contact).permit(:phone, :email)
  end
end

new.html.erb

<%= simple_form_for @contact, html: {class: 'form-inline'} do |f| %>
      <div class="form-group">
          <div class="col-sm-6">
              <%= f.input_field :email, class: "form-control", placeholder: "email", required: false %>
          </div>
      </div>
      <div class="form-group">
          <div class="col-sm-6">
              <%= f.input_field :phone, class: "form-control", placeholder: "+7 (095) 123-45-67" %>
          </div>
      </div>
      <div class="form-group">
          <div class="col-sm-6">
              <%= f.button :submit, 'Submit', :class=> "btn btn-success" %>
          </div>
      </div>
      <div class="form-group">
        <div class="col-sm-12">
          <% flash.each do |key, value| %>
              <div class="alert alert-info" role="alert">
                 <div class="alert alert-<%= key %>"><%= value %></div>
              </div>
          <% end %>
        </div>
      </div>
<% end %>

Upvotes: 0

Views: 224

Answers (2)

oreoluwa
oreoluwa

Reputation: 5633

I'd probably go about it this way:

class Contact < MailForm::Base
  attribute :phone
  attribute :email,     :validate => /\A([\w\.%\+\-]+)@([\w\-]+\.)+([\w]{2,})\z/i, 
                      presence: false, allow_blank: true
  validate :at_least_a_contact

  def headers
    {
      :subject => "My Contact Form",
      :to => "[email protected]",
      :from => %("#{phone}" <#{email}>)
    }
  end
  private
    def at_least_a_contact
      unless phone.present? || email.present?
        errors.add(:contact, "You need at least a contact method")
      end
    end
end

Upvotes: 0

Chaitanya Kale
Chaitanya Kale

Reputation: 241

Use allow_blank: true in your validation in your model.

http://guides.rubyonrails.org/active_record_validations.html#allow-blank

Upvotes: 0

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