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<?php |
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// $Id$ |
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/** |
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* @file |
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* Implementation of helper functions related to hook_field_access(). |
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*/ |
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/** |
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* Implementation of hook_field_access('view'). |
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*/ |
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function _field_permissions_field_view_access($field_name, $field_permissions, $account, $node) { |
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// Check if user has access to view this field in any node. |
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if (!empty($field_permissions['view']) && user_access('view '. $field_name, $account)) { |
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return TRUE; |
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} |
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// If 'view own' permission has been enabled for this field, then we can |
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// check if the user has the right permission, and ownership of the node. |
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if (!empty($field_permissions['view own']) && user_access('view own '. $field_name, $account)) { |
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// When content_access('view') is invoked, it may or may not provide a |
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// node object. It will, almost always, except when this function is |
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// invoked as a field access callback from Views, where it is used to |
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// evaluate if the field can be included in the query itself. In this |
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// case we should grant access. Views will invoke content_access('view') |
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// again, indirectly, when rendering the fields using content_format(), |
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// and this time it will provide a pseudo node object that includes the |
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// uid of the node author, so here is where we have the chance to |
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// evaluate ownership to check for 'view own <field>' permission. |
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return (!isset($node) || $node->uid == $account->uid); |
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} |
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return FALSE; |
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} |
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/** |
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* Implementation of hook_field_access('edit'). |
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*/ |
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function _field_permissions_field_edit_access($field_name, $field_permissions, $account, $node) { |
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// Check if user has access to edit this field on node creation. |
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if (empty($node->nid) && !empty($field_permissions['create'])) { |
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return user_access('create '. $field_name, $account); |
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} |
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// Check if user has access to edit this field in any node. |
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if (!empty($field_permissions['edit']) && user_access('edit '. $field_name, $account)) { |
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return TRUE; |
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} |
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// If 'edit own' permission has been enabled for this field, then we can |
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// check if the user has the right permission, and ownership of the node. |
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if (!empty($field_permissions['edit own']) && user_access('edit own '. $field_name, $account) && $node->uid == $account->uid) { |
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return TRUE; |
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} |
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return FALSE; |
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} |
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