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<?php |
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/** |
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* @package midcom.dba |
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* @author CONTENT CONTROL http://www.contentcontrol-berlin.de/ |
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* @copyright CONTENT CONTROL http://www.contentcontrol-berlin.de/ |
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* @license http://www.gnu.org/licenses/gpl.html GNU General Public License |
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*/ |
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namespace midcom\dba; |
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use midcom_connection; |
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use midcom_db_attachment; |
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use midcom; |
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/** |
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* midcom attachment support |
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* |
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* @package midcom.dba |
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*/ |
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trait attachments |
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{ |
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/** |
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* Retrieves an attachment by its name. |
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* If multiple attachments match the name (should not happen in reality), the |
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* first match will be returned. |
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* |
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* @param string $name The name of the attachment to look up. |
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* @return midcom_db_attachment The attachment found, or false on failure. |
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*/ |
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public function get_attachment(string $name) : ?midcom_db_attachment |
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{ |
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if (!$this->id) { |
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debug_add('Cannot retrieve attachments on a non-persistent object.', MIDCOM_LOG_WARN); |
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return null; |
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} |
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// Locate attachment |
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$qb = $this->get_attachment_qb(); |
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$qb->add_constraint('name', '=', $name); |
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return $qb->execute()[0] ?? null; |
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} |
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/** |
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* Delete an attachment by its name. |
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* If multiple attachments match the name (should not happen in reality), the |
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* first match will be deleted. |
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* |
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* @param string $name The name of the attachment to delete. |
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* @return bool Indicating success. |
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*/ |
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public function delete_attachment($name) : bool |
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{ |
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$attachment = $this->get_attachment($name); |
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if (!$attachment) { |
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debug_add("Tried to delete the attachment {$name} at the object " . get_class($this) . " {$this->guid}, but it did not exist. Failing silently."); |
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return false; |
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} |
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if ( !$this->can_do('midgard:update') |
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|| !$this->can_do('midgard:attachments')) { |
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debug_add("Failed to set parameters, midgard:update or midgard:attachments on the " . get_class($this) . " {$this->guid} not granted for the current user.", |
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MIDCOM_LOG_ERROR); |
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return false; |
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} |
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return $attachment->delete(); |
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} |
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/** |
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* Creates a new attachment at the current object and returns it for usage. |
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*/ |
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public function create_attachment(string $name, string $title, string $mimetype) : ?midcom_db_attachment |
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{ |
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if (!$this->id) { |
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debug_add('Cannot create attachments on a non-persistent object.', MIDCOM_LOG_WARN); |
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return null; |
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} |
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if ( !$this->can_do('midgard:update') |
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|| !$this->can_do('midgard:attachments')) { |
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debug_add("Failed to set parameters, midgard:update or midgard:attachments on the " . get_class($this) . " {$this->guid} not granted for the current user.", |
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MIDCOM_LOG_ERROR); |
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return null; |
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} |
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$attachment = new midcom_db_attachment(); |
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$attachment->name = $name; |
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$attachment->title = $title; |
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$attachment->mimetype = $mimetype; |
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$attachment->parentguid = $this->guid; |
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if (!$attachment->create()) { |
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debug_add("Could not create the attachment '{$name}' for " . get_class($this) . " {$this->guid}: " . midcom_connection::get_error_string(), |
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MIDCOM_LOG_INFO); |
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return null; |
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} |
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return $attachment; |
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} |
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/** |
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* Returns a prepared query builder that is already limited to the attachments of the given |
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* object. |
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*/ |
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180 |
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public function get_attachment_qb() : ?\midcom_core_querybuilder |
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{ |
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if (!$this->id) { |
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debug_add('Cannot retrieve attachments on a non-persistent object.', MIDCOM_LOG_WARN); |
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return null; |
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} |
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$qb = midcom::get()->dbfactory->new_query_builder('midcom_db_attachment'); |
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$qb->add_constraint('parentguid', '=', $this->guid); |
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return $qb; |
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} |
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/** |
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* Returns a complete list of attachments for the current object. If there are no |
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* attachments, an empty array is returned. |
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* |
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* @return midcom_db_attachment[] A list of attachments |
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*/ |
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public function list_attachments() : array |
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{ |
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if (!$this->id) { |
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debug_add('Cannot retrieve attachments on a non-persistent object.', MIDCOM_LOG_INFO); |
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return []; |
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} |
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return $this->get_attachment_qb()->execute(); |
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} |
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} |
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flack /
openpsa
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