gpeb-filter-by-nested-field.php: Added snippet to allow filtering data via nested entries.

Author: saifsultanc

gp-entry-blocks/gpeb-filter-by-nested-field.php

@@ -0,0 +1,93 @@
+<?php
+/**
+ * Gravity Perks // Entry Blocks // Filter values by Nested Entry.
+ * https://gravitywiz.com/documentation/gravity-forms-entry-blocks/
+ *
+ * Instruction Video: https://www.loom.com/share/f795e8b5ef58489794dca96e83fcd230
+ *
+ */
+class GPEB_Filter_By_Nested_Entry {
+
+	private $parent_form_id;
+	private $nested_form_id;
+	private $parent_hidden_field_id;
+	private $nested_target_field_id;
+
+	public function __construct( $config = array() ) {
+		$this->parent_form_id         = rgar( $config, 'parent_form_id' );
+		$this->nested_form_id         = rgar( $config, 'nested_form_id' );
+		$this->parent_hidden_field_id = rgar( $config, 'parent_hidden_field_id' );
+		$this->nested_target_field_id = rgar( $config, 'nested_target_field_id' );
+
+		add_action( 'init', array( $this, 'init' ) );
+	}
+
+	public function init() {
+		add_filter( 'gpeb_filter_form', array( $this, 'modify_filter_form' ) );
+		add_filter( 'gpeb_queryer_entries', array( $this, 'filter_entries_by_nested_value' ), 10, 2 );
+	}
+
+	private function is_applicable_form( $form_id = null ) {
+		if ( $form_id === null ) {
+			$form_id = rgget( 'filters_form_id' );
+		}
+		return $form_id == $this->parent_form_id;
+	}
+
+	public function modify_filter_form( $form ) {
+		if ( ! $this->is_applicable_form( $form['id'] ) ) {
+			return $form;
+		}
+
+		foreach ( $form['fields'] as &$field ) {
+			if ( $field->id == $this->parent_hidden_field_id ) {
+				$nested_form_field = GFAPI::get_field( $this->nested_form_id, $this->nested_target_field_id );
+				$field = $nested_form_field;
+				$field->id = $this->parent_hidden_field_id;
+			}
+		}
+
+		return $form;
+	}
+
+	public function filter_entries_by_nested_value( $entries, $gf_queryer ) {
+		if ( ! $this->is_applicable_form() ) {
+			return $entries;
+		}
+
+		$filters = rgget( 'filters' );
+		if ( ! isset( $filters[ $this->parent_hidden_field_id ] ) ) {
+			return $entries;
+		}
+
+		$nested_entries = GFAPI::get_entries( $this->nested_form_id, array(
+			'field_filters' => array(
+				array(
+					'key'   => $this->nested_target_field_id,
+					'value' => $filters[ $this->parent_hidden_field_id ],
+				),
+			),
+		) );
+
+		$entries = array();
+		$parent_entry_ids = array();
+		
+		foreach ( $nested_entries as $nested_entry ) {
+			$parent_entry_id = rgar( $nested_entry, 'gpnf_entry_parent' );
+			$entry = GFAPI::get_entry( $parent_entry_id );
+			if ( ! in_array( $parent_entry_id, $parent_entry_ids ) && $entry && ! is_wp_error( $entry ) ) {
+				$parent_entry_ids[] = $parent_entry_id;
+				$entries[] = $entry;
+			}
+		}
+
+		return $entries;
+	}
+}
+
+new GPEB_Filter_By_Nested_Entry( array(
+	'parent_form_id'         => 4,
+	'nested_form_id'         => 3,
+	'parent_hidden_field_id' => 10,
+	'nested_target_field_id' => 4,
+) );