How to append new form elements in “Add New” form of Users in Wordpress admin panel?

Question

I'm developing a WordPress plugin and I want to append some extra form fields in add new form of Users section inside admin panel without editing core files. Can somebody help me in achieving this.

Answer 1

You will find a lot of tutorials for doing this, take a look here for example : http://justintadlock.com/archives/2009/09/10/adding-and-using-custom-user-profile-fields

You can use following hooks : show_user_profile, edit_user_profile, personal_options_update, edit_user_profile_update ...

EDIT : But it will not add fields on the "New User" form since there is no hook for that : http://core.trac.wordpress.org/browser/branches/3.3/wp-admin/user-new.php

But you can :

• try to add needed fields using javascript, and use user_register hook to add user meta data in db.
• Or build your own form.

Answer 2

You can use

apply_filters('show_password_fields', true) )
add_filter('show_password_fields','youfunction',10,1);
function youfunction($return)
{
    ?>
    <tr>
                    <th><label for="gender">Gender</label></th>
                    <td>

                        <label><input type="radio" name="w4p_user_gender"  value="male" class="regular-radio"  />Male</label>
                        <label style="margin-left:10px"><input type="radio" name="w4p_user_gender"  value="female" class="regular-radio"  />Female</label><br/>
                        <span class="description">Please select your Gender.</span>
                    </td>
                </tr>
    <?php
    return $return;
}

this filter to add your fields. I don't know it's is a good idea or not but works for me :).