How to allow users to edit a specific field of content?

Question

I have a taxonomy list connected with a content type. I want to give all authenticated users to access the content edit page but only see and access the taxonomy field section so users can participate in making the site more organized and accurate.

Is there a way to only show 1 field to users and allow them to edit just that one field? If so, how do i show a link on the content page to the edit page? (example: "Click here to edit/add tags" - This link would then go to the /node/2343/edit link)

My idea comes from many video sharing sites where people can add/edit "categories" or "tags" if the user has permission to do so. These sites usually have a little "+" symbol next to the categories which then opens the category check list for that piece of content for editing.

Answer 1

You can set permissions for fields who can edit or not Please have a look into this module

Field Permissions

The Field Permissions module allows site administrators to set field-level permissions to edit, view and create fields on any entity.

Answer 2

Using hook form alter will allow you to do this.

function my_module_form_alter(&$form, &$form_state, $form_id) {
  // Pick which content type you want to tinker with.
  if ($form_id == 'your_custom_contenttype'){
    global $user;
// only hide fields when editing the node
if (arg(0) == 'node' && is_numeric(arg(1)) && arg(2) != 'edit' {

 // Check if the user has the 'authenticated' role.
      if (in_array('authenticated', $user->roles)) {
      // Now it's time to hide all the fields you don't need
      $form['title']['#access'] = FALSE;
      $form['body']['#access'] = FALSE;
      $form['field_name_1']['#access'] = FALSE;
      $form['field_name_2']['#access'] = FALSE;
      $form['field_name_3']['#access'] = FALSE;
      //etc
    }
  }
}
}