public function save() {
		global $wpdb;

		$bp = buddypress();

		$this->group_id     = apply_filters( 'xprofile_field_group_id_before_save',     $this->group_id,     $this->id );
		$this->parent_id    = apply_filters( 'xprofile_field_parent_id_before_save',    $this->parent_id,    $this->id );
		$this->type         = apply_filters( 'xprofile_field_type_before_save',         $this->type,         $this->id );
		$this->name         = apply_filters( 'xprofile_field_name_before_save',         $this->name,         $this->id );
		$this->description  = apply_filters( 'xprofile_field_description_before_save',  $this->description,  $this->id );
		$this->is_required  = apply_filters( 'xprofile_field_is_required_before_save',  $this->is_required,  $this->id );
		$this->order_by	    = apply_filters( 'xprofile_field_order_by_before_save',     $this->order_by,     $this->id );
		$this->field_order  = apply_filters( 'xprofile_field_field_order_before_save',  $this->field_order,  $this->id );
		$this->option_order = apply_filters( 'xprofile_field_option_order_before_save', $this->option_order, $this->id );
		$this->can_delete   = apply_filters( 'xprofile_field_can_delete_before_save',   $this->can_delete,   $this->id );
		$this->type_obj     = bp_xprofile_create_field_type( $this->type );

		/**
		 * Fires before the current field instance gets saved.
		 *
		 * Please use this hook to filter the properties above. Each part will be passed in.
		 *
		 * @since 1.0.0
		 *
		 * @param BP_XProfile_Field $this Current instance of the field being saved.
		 */
		do_action_ref_array( 'xprofile_field_before_save', array( $this ) );

		$is_new_field = is_null( $this->id );

		if ( ! $is_new_field ) {
			$sql = $wpdb->prepare( "UPDATE {$bp->profile->table_name_fields} SET group_id = %d, parent_id = 0, type = %s, name = %s, description = %s, is_required = %d, order_by = %s, field_order = %d, option_order = %d, can_delete = %d, is_default_option = %d WHERE id = %d", $this->group_id, $this->type, $this->name, $this->description, $this->is_required, $this->order_by, $this->field_order, $this->option_order, $this->can_delete, $this->is_default_option, $this->id );
		} else {
			$sql = $wpdb->prepare( "INSERT INTO {$bp->profile->table_name_fields} (group_id, parent_id, type, name, description, is_required, order_by, field_order, option_order, can_delete, is_default_option ) VALUES ( %d, %d, %s, %s, %s, %d, %s, %d, %d, %d, %d )", $this->group_id, $this->parent_id, $this->type, $this->name, $this->description, $this->is_required, $this->order_by, $this->field_order, $this->option_order, $this->can_delete, $this->is_default_option );
		}

		/**
		 * Check for null so field options can be changed without changing any
		 * other part of the field. The described situation will return 0 here.
		 */
		if ( $wpdb->query( $sql ) !== null ) {

			if ( $is_new_field ) {
				$this->id = $wpdb->insert_id;
			}

			// Only do this if we are editing an existing field.
			if ( ! $is_new_field ) {

				/**
				 * Remove any radio or dropdown options for this
				 * field. They will be re-added if needed.
				 * This stops orphan options if the user changes a
				 * field from a radio button field to a text box.
				 */
				$this->delete_children();
			}

			/**
			 * Check to see if this is a field with child options.
			 * We need to add the options to the db, if it is.
			 */
			if ( $this->type_obj->supports_options ) {

				$parent_id = $this->id;

				// Allow plugins to filter the field's child options (i.e. the items in a selectbox).
				$post_option  = ! empty( $_POST["{$this->type}_option"]           ) ? $_POST["{$this->type}_option"]           : '';
				$post_default = ! empty( $_POST["isDefault_{$this->type}_option"] ) ? $_POST["isDefault_{$this->type}_option"] : '';

				/**
				 * Filters the submitted field option value before saved.
				 *
				 * @since 1.5.0
				 *
				 * @param string            $post_option Submitted option value.
				 * @param BP_XProfile_Field $type        Current field type being saved for.
				 */
				$options      = apply_filters( 'xprofile_field_options_before_save', $post_option,  $this->type );

				/**
				 * Filters the default field option value before saved.
				 *
				 * @since 1.5.0
				 *
				 * @param string            $post_default Default option value.
				 * @param BP_XProfile_Field $type         Current field type being saved for.
				 */
				$defaults     = apply_filters( 'xprofile_field_default_before_save', $post_default, $this->type );

				$counter = 1;
				if ( !empty( $options ) ) {
					foreach ( (array) $options as $option_key => $option_value ) {
						$is_default = 0;

						if ( is_array( $defaults ) ) {
							if ( isset( $defaults[ $option_key ] ) ) {
								$is_default = 1;
							}
						} else {
							if ( (int) $defaults == $option_key ) {
								$is_default = 1;
							}
						}

						if ( '' != $option_value ) {
							$sql = $wpdb->prepare( "INSERT INTO {$bp->profile->table_name_fields} (group_id, parent_id, type, name, description, is_required, option_order, is_default_option) VALUES (%d, %d, 'option', %s, '', 0, %d, %d)", $this->group_id, $parent_id, $option_value, $counter, $is_default );
							if ( ! $wpdb->query( $sql ) ) {
								return false;
							}
						}

						$counter++;
					}
				}
			}

			/**
			 * Fires after the current field instance gets saved.
			 *
			 * @since 1.0.0
			 *
			 * @param BP_XProfile_Field $this Current instance of the field being saved.
			 */
			do_action_ref_array( 'xprofile_field_after_save', array( $this ) );

			// Recreate type_obj in case someone changed $this->type via a filter.
			$this->type_obj            = bp_xprofile_create_field_type( $this->type );
			$this->type_obj->field_obj = $this;

			return $this->id;
		} else {
			return false;
		}
	}