在表单中验证Rails中的多个字段

Question

I have this form in my app, I want to validate couple of fields of the form. Ie I want to make them as required field during a form submission.

Is there any way so that I don't have to use any gem or any good gem that is straightforward for this particular task?

<div class="col-md-4">
  <div class="form-group">
    <div class="field">
      <%= f.label :name %><br />
      <%= f.text_field :name, :class=>"form-control", :placeholder=>"Enter Your Name" %>
    </div>
    <div class="field">
      <%= f.label :email %><br />
      <%= f.text_field :email, :class=>"form-control", :placeholder=>"Enter Your Password"%>
      </div>
    <div class="field">
      <%= f.label :phone %><br />
      <%= f.text_field :phone, :class=>"form-control", :placeholder=>"Enter Your Phone Number"%>
      </div>
   </div> 
</div>

<div class = "col-md-8">
   <div class="form-group">
     <div class="field">
      <%= f.label :description %><br />
      <%= f.text_area :description,  :class=>"form-control", :size=>"20x5", :placeholder=>"Enter Your Message"%>
     </div>
   </div>
</div>

<div class="actions">
  <%= f.submit "Submit", :class=> "button1"%>
</div> 

Thanks in advance

Answer 1

We can have various plugins for client side validations. You can chose jquery_validate for this purpose. Refer : http://jqueryvalidation.org/

But client side validation is not always reliable. If you disable browser javascript the validation won't work anymore.

But from user experience point of view, Consider implementing client side validations. But application security point of view you should consider having server side validations as well.

  validates :name, 
    presence: { message: "Organization name is mandatory." }

  validates :address, presence: {message: 'Address is mandatory.'}

  validates :description, presence: { message: 'Description is mandatory'}
  validates_length_of :name, 
    maximum: 50, too_long: "Maximum 50 characters allowed."

  validates_length_of :address, :description, 
    maximum: 300, too_long: "Maximum 300 characters allowed."

Hope it helps you :)