Pre-select Group Audience for Organic Groups

Question

Here is my situation.

I am using the latest version of Organic Groups on Drupal 7. Every user on my site is part of one group and one group only. Is there a way to make it so that when users are creating group content, the group they belong to is automatically pre-selected? Again, every user is only in one group (but there are numerous groups), so it's superfluous to force them to make a group selection whenever they are creating group content.

Answer 1

1. You can use Field Permission module to not allow a user to see the group field on content type.
2. Use hook_form_BASE_FORM_ID_alter() to set a default field value for group field based on current logged in user.

as a sample code (not tested)

function mymodule_form_node_form_alter(&$form, &$form_state) {
  $node = $form_state['node'];
  if (!isset($node->nid) || isset($node->is_new)) {
    global $user;
    $groups = og_get_groups_by_user($user);
      if(is_array($groups)) {
      // This needs to be evaluated to check proper mapping of what field expect to set a default default field value
      $form['group_field_name']['#default'] = $groups[0];  
      }
  }
}

Answer 2

Entity Reference Prepopulate is the best way to do this without custom code like arpitr described. You would rewrite the links to look like

/node/add/article?og_group_ref=123

These links could be on the group's page or you may find a token to populate the gid automatically based on user.