How to make fields required for one type of user but not others? (registration and profile forms)

Question

I would like to know what is the best way to handle this scenario using Drupal 7.

The issue I am facing is that the Join (registration) forms, and Profile forms are different for all 4 types of users I am working with. The registration and profile forms are all connected to one master profile form. This means that if a field is required for one, it will be for all of users, how can I avoid this? What is the best way to go about it?

Thanks!

Answer 1

Required By role

Field required by role is a module that improves core "required" functionality.

Similar to CCK Required by role brings extra features such as:

Ready for all entities, including custom entities. Doesn´t need extra configuration, just install. Respects previous configuration. Configuration per field instance.

Answer 2

You can do it by hook_form_alter. Alter the #required attribute of field according to specific condition.

For example:

function mymodule_form_alter(&$form,&$form_state) {
    if ($form_id == 'user_register_form') {
      $form['profile_detailp']['field_name']['und']['#required']=0;
   }

}