-
-
Save entr/e863b00809fa94a12bbe to your computer and use it in GitHub Desktop.
Gravity Wiz // Gravity Forms // Calculation Subtotal Merge Tag
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| { | |
| "name": "wptailor/gravityforms-subtotal-mergetag", | |
| "description": "Adds a {subtotal} merge tag which calculates the subtotal of the form. This merge tag can only be used", | |
| "type": "wordpress-plugin", | |
| "license": "GPL3+", | |
| "authors": [ | |
| { | |
| "name": "David Smith", | |
| "email": "[email protected]" | |
| }, | |
| { | |
| "name": "Zlatko Zlatev", | |
| "email": "[email protected]" | |
| } | |
| ], | |
| "require": {} | |
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <?php | |
| /* | |
| Plugin Name: Gravityforms Subtotal Merge Tag | |
| Description: Adds a {subtotal} merge tag which calculates the subtotal of the form. | |
| Plugin URI: https://gist.github.com/entr/e863b00809fa94a12bbe | |
| Author: David Smith | |
| Author URI: http://gravitywiz.com/subtotal-merge-tag-for-calculations/ | |
| Version: 1.0 | |
| License: GPL2 | |
| */ | |
| /** | |
| * Calculation Subtotal Merge Tag | |
| * | |
| * Adds a {subtotal} merge tag which calculates the subtotal of the form. This merge tag can only be used | |
| * within the "Formula" setting of Calculation-enabled fields (i.e. Number, Calculated Product). | |
| * | |
| * @author David Smith <[email protected]> | |
| * @license GPL-2.0+ | |
| * @link http://gravitywiz.com/subtotal-merge-tag-for-calculations/ | |
| * @copyright 2013 Gravity Wiz | |
| */ | |
| class GWCalcSubtotal { | |
| private static $instance; | |
| public static $merge_tag = '{subtotal}'; | |
| private function actions() { | |
| // front-end | |
| add_filter( 'gform_pre_render', array( $this, 'maybe_replace_subtotal_merge_tag' ) ); | |
| add_filter( 'gform_pre_validation', array( $this, 'maybe_replace_subtotal_merge_tag_submission' ) ); | |
| // back-end | |
| add_filter( 'gform_admin_pre_render', array( $this, 'add_merge_tags' ) ); | |
| } | |
| public static function get_instance() { | |
| if ( ! isset( self::$instance ) ) { | |
| self::$instance = new self; | |
| self::$instance->actions(); | |
| } | |
| return self::$instance; | |
| } | |
| private function __construct() {} | |
| /** | |
| * Look for {subtotal} merge tag in form fields 'calculationFormula' property. If found, replace with the | |
| * aggregated subtotal merge tag string. | |
| * | |
| * @param mixed $form | |
| */ | |
| function maybe_replace_subtotal_merge_tag( $form, $filter_tags = false ) { | |
| foreach( $form['fields'] as &$field ) { | |
| if( current_filter() == 'gform_pre_render' && rgar( $field, 'origCalculationFormula' ) ) | |
| $field['calculationFormula'] = $field['origCalculationFormula']; | |
| if( ! self::has_subtotal_merge_tag( $field ) ) | |
| continue; | |
| $subtotal_merge_tags = self::get_subtotal_merge_tag_string( $form, $field, $filter_tags ); | |
| $field['origCalculationFormula'] = $field['calculationFormula']; | |
| $field['calculationFormula'] = str_replace( self::$merge_tag, $subtotal_merge_tags, $field['calculationFormula'] ); | |
| } | |
| return $form; | |
| } | |
| function maybe_replace_subtotal_merge_tag_submission( $form ) { | |
| return $this->maybe_replace_subtotal_merge_tag( $form, true ); | |
| } | |
| /** | |
| * Get all the pricing fields on the form, get their corresponding merge tags and aggregate them into a formula that | |
| * will yeild the form's subtotal. | |
| * | |
| * @param mixed $form | |
| */ | |
| static function get_subtotal_merge_tag_string( $form, $current_field, $filter_tags = false ) { | |
| $pricing_fields = self::get_pricing_fields( $form ); | |
| $product_tag_groups = array(); | |
| foreach( $pricing_fields['products'] as $product ) { | |
| $product_field = rgar( $product, 'product' ); | |
| $option_fields = rgar( $product, 'options' ); | |
| $quantity_field = rgar( $product, 'quantity' ); | |
| // do not include current field in subtotal | |
| if( $product_field['id'] == $current_field['id'] ) | |
| continue; | |
| $product_tags = GFCommon::get_field_merge_tags( $product_field ); | |
| $quantity_tag = 1; | |
| // if a single product type, only get the "price" merge tag | |
| if( in_array( GFFormsModel::get_input_type( $product_field ), array( 'singleproduct', 'calculation', 'hiddenproduct' ) ) ) { | |
| // single products provide quantity merge tag | |
| if( empty( $quantity_field ) && ! rgar( $product_field, 'disableQuantity' ) ) | |
| $quantity_tag = $product_tags[2]['tag']; | |
| $product_tags = array( $product_tags[1] ); | |
| } | |
| // if quantity field is provided for product, get merge tag | |
| if( ! empty( $quantity_field ) ) { | |
| $quantity_tag = GFCommon::get_field_merge_tags( $quantity_field ); | |
| $quantity_tag = $quantity_tag[0]['tag']; | |
| } | |
| if( $filter_tags && ! self::has_valid_quantity( $quantity_tag ) ) | |
| continue; | |
| $product_tags = wp_list_pluck( $product_tags, 'tag' ); | |
| $option_tags = array(); | |
| foreach( $option_fields as $option_field ) { | |
| if( is_array( $option_field['inputs'] ) ) { | |
| $choice_number = 1; | |
| foreach( $option_field['inputs'] as &$input ) { | |
| //hack to skip numbers ending in 0. so that 5.1 doesn't conflict with 5.10 | |
| if( $choice_number % 10 == 0 ) | |
| $choice_number++; | |
| $input['id'] = $option_field['id'] . '.' . $choice_number++; | |
| } | |
| } | |
| $new_options_tags = GFCommon::get_field_merge_tags( $option_field ); | |
| if( ! is_array( $new_options_tags ) ) | |
| continue; | |
| if( GFFormsModel::get_input_type( $option_field ) == 'checkbox' ) | |
| array_shift( $new_options_tags ); | |
| $option_tags = array_merge( $option_tags, $new_options_tags ); | |
| } | |
| $option_tags = wp_list_pluck( $option_tags, 'tag' ); | |
| $product_tag_groups[] = '( ( ' . implode( ' + ', array_merge( $product_tags, $option_tags ) ) . ' ) * ' . $quantity_tag . ' )'; | |
| } | |
| $shipping_tag = 0; | |
| /* Shipping should not be included in subtotal, correct? | |
| if( rgar( $pricing_fields, 'shipping' ) ) { | |
| $shipping_tag = GFCommon::get_field_merge_tags( rgars( $pricing_fields, 'shipping/0' ) ); | |
| $shipping_tag = $shipping_tag[0]['tag']; | |
| }*/ | |
| $pricing_tag_string = '( ( ' . implode( ' + ', $product_tag_groups ) . ' ) + ' . $shipping_tag . ' )'; | |
| return $pricing_tag_string; | |
| } | |
| /** | |
| * Get all pricing fields from a given form object grouped by product and shipping with options nested under their | |
| * respective products. | |
| * | |
| * @param mixed $form | |
| */ | |
| static function get_pricing_fields( $form ) { | |
| $product_fields = array(); | |
| foreach( $form["fields"] as $field ) { | |
| if( $field["type"] != 'product' ) | |
| continue; | |
| $option_fields = GFCommon::get_product_fields_by_type($form, array("option"), $field['id'] ); | |
| // can only have 1 quantity field | |
| $quantity_field = GFCommon::get_product_fields_by_type( $form, array("quantity"), $field['id'] ); | |
| $quantity_field = rgar( $quantity_field, 0 ); | |
| $product_fields[] = array( | |
| 'product' => $field, | |
| 'options' => $option_fields, | |
| 'quantity' => $quantity_field | |
| ); | |
| } | |
| $shipping_field = GFCommon::get_fields_by_type($form, array("shipping")); | |
| return array( "products" => $product_fields, "shipping" => $shipping_field ); | |
| } | |
| static function has_valid_quantity( $quantity_tag ) { | |
| if( is_numeric( $quantity_tag ) ) { | |
| $qty_value = $quantity_tag; | |
| } else { | |
| // extract qty input ID from the merge tag | |
| preg_match_all( '/{[^{]*?:(\d+(\.\d+)?)(:(.*?))?}/mi', $quantity_tag, $matches, PREG_SET_ORDER ); | |
| $qty_input_id = rgars( $matches, '0/1' ); | |
| $qty_value = rgpost( 'input_' . str_replace( '.', '_', $qty_input_id ) ); | |
| } | |
| return intval( $qty_value ) > 0; | |
| } | |
| function add_merge_tags( $form ) { | |
| $label = __('Subtotal', 'gravityforms'); | |
| ?> | |
| <script type="text/javascript"> | |
| // for the future (not yet supported for calc field) | |
| gform.addFilter("gform_merge_tags", "gwcs_add_merge_tags"); | |
| function gwcs_add_merge_tags( mergeTags, elementId, hideAllFields, excludeFieldTypes, isPrepop, option ) { | |
| mergeTags["pricing"].tags.push({ tag: '<?php echo self::$merge_tag; ?>', label: '<?php echo $label; ?>' }); | |
| return mergeTags; | |
| } | |
| // hacky, but only temporary | |
| jQuery(document).ready(function($){ | |
| var calcMergeTagSelect = $('#field_calculation_formula_variable_select'); | |
| calcMergeTagSelect.find('optgroup').eq(0).append( '<option value="<?php echo self::$merge_tag; ?>"><?php echo $label; ?></option>' ); | |
| }); | |
| </script> | |
| <?php | |
| //return the form object from the php hook | |
| return $form; | |
| } | |
| static function has_subtotal_merge_tag( $field ) { | |
| // check if form is passed | |
| if( isset( $field['fields'] ) ) { | |
| $form = $field; | |
| foreach( $form['fields'] as $field ) { | |
| if( self::has_subtotal_merge_tag( $field ) ) | |
| return true; | |
| } | |
| } else { | |
| if( isset( $field['calculationFormula'] ) && strpos( $field['calculationFormula'], self::$merge_tag ) !== false ) | |
| return true; | |
| } | |
| return false; | |
| } | |
| } | |
| add_action('plugins_loaded', 'GWCalcSubtotal::get_instance' ); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment