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<?php |
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namespace Carbon_Fields\Datastore; |
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use Carbon_Fields\Field\Field; |
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/** |
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* Abstract meta datastore class. |
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*/ |
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abstract class Meta_Datastore extends Datastore { |
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/** |
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* Initialization tasks. |
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**/ |
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public function init() {} |
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/** |
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* Save the field value(s) into the database. |
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* |
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* @param Field $field The field to save. |
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*/ |
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public function save(Field $field) { |
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if ( ! update_metadata( $this->get_meta_type(), $this->get_id(), $field->get_name(), $field->get_value() ) ) { |
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add_metadata( $this->get_meta_type(), $this->get_id(), $field->get_name(), $field->get_value(), true ); |
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} |
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} |
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/** |
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* Load the field value(s) from the database. |
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* |
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* @param Field $field The field to retrieve value for. |
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*/ |
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public function load( Field $field ) { |
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global $wpdb; |
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$value = $wpdb->get_col( ' |
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SELECT `meta_value` |
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FROM ' . $this->get_table_name() . ' |
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WHERE `' . $this->get_table_field_name() . '`=' . intval( $this->get_id() ) . ' |
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AND `meta_key`="' . $field->get_name() . '" |
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LIMIT 1 |
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' ); |
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if ( ! is_array( $value ) || count( $value ) < 1 ) { |
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$field->set_value( false ); |
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return; |
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} |
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$field->set_value( $value[0] ); |
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} |
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/** |
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* Delete the field value(s) from the database. |
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* |
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* @param Field $field The field to delete. |
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*/ |
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public function delete( Field $field ) { |
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delete_metadata( $this->get_meta_type(), $this->get_id(), $field->get_name(), $field->get_value() ); |
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} |
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/** |
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* Load complex field value(s) from the database. |
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* |
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* @param mixed $field The field to load values for. |
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*/ |
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public function load_values( $field ) { |
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global $wpdb; |
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if ( is_object( $field ) && is_subclass_of( $field, 'Carbon_Fields\\Field\\Field' ) ) { |
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$meta_key = $field->get_name(); |
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} else { |
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$meta_key = $field; |
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} |
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return $wpdb->get_results( ' |
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SELECT meta_key AS field_key, meta_value AS field_value FROM ' . $this->get_table_name() . ' |
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WHERE `meta_key` LIKE "' . addslashes( $meta_key ) . '_%" AND `' . $this->get_table_field_name() . '`="' . intval( $this->get_id() ) . '" |
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', ARRAY_A ); |
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} |
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/** |
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* Delete complex field value(s) from the database. |
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* |
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* @param mixed $field The field to delete values for. |
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*/ |
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public function delete_values( $field ) { |
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global $wpdb; |
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$group_names = $field->get_group_names(); |
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$field_name = $field->get_name(); |
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$meta_key_constraint = '`meta_key` LIKE "' . $field_name . implode( '-%" OR `meta_key` LIKE "' . $field_name, $group_names ) . '-%"'; |
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return $wpdb->query( ' |
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DELETE FROM ' . $this->get_table_name() . ' |
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WHERE (' . $meta_key_constraint . ') AND `' . $this->get_table_field_name() . '`="' . intval( $this->get_id() ) . '" |
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' ); |
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} |
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/** |
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* Retrieve the type of meta data. |
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*/ |
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abstract public function get_meta_type(); |
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/** |
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* Retrieve the meta table name to query. |
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*/ |
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abstract public function get_table_name(); |
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/** |
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* Retrieve the meta table field name to query by. |
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*/ |
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abstract public function get_table_field_name(); |
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/** |
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* Set the ID of the datastore. |
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*/ |
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abstract public function set_id( $id ); |
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/** |
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* Retrieve the ID of the datastore. |
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*/ |
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abstract public function get_id(); |
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} |
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htmlburger /
carbon-fields
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