gcn-populate-select.php: Added snippet to dynamically populate Select and Multi-Select fields from the options in a Select or Multi-Select field in a Notion database.

Author: veryspry

gc-notion/gcn-populate-select.php

@@ -0,0 +1,66 @@
+<?php
+
+/**
+ * Gravity Connect // Notion // Populate Select Field with Notion Database Options
+ * https://gravitywiz.com/documentation/gravity-connect-notion/
+ *
+ * Populate a Select or Multi-Select field with the options from a Notion Database Select
+ * or Multi-Select property.
+ *
+ * Instructions:
+ * 
+ *  1. Change FORMID in the filter name to your form ID.
+ *  2. Change the $field_id, $database_id, and $property_id variables to match your form and Notion database.
+ *      NOTE: the $database_id and $property_id can be found in the Javascript developer console in a GC Notion
+ *      feed settings AFTER the feed is connected to a database.
+ */
+
+add_filter( 'gform_pre_render_FORMID', function( $form, $ajax, $field_values ) {
+	$field_id    = 1; // Change this to the ID of the field you want to populate.
+	$database_id = 'DATABASE_ID'; // Change this to the ID of the Notion database which you want to populate values from.
+	$property_id = 'PROPERTY_ID'; // Change this to the ID of the property in the database which you want to populate values.
+
+	$notion_account_id = \GC_Notion\Tokens::get_resource_service_account( $database_id );
+	if( empty( $notion_account_id ) ) {
+        return $form;
+    }
+
+	$token = rgar( \GC_Notion\Tokens::get_service_account_ids_to_tokens(), $notion_account_id );
+	if ( empty( $token ) ) {
+		return $form;
+	}
+
+	foreach ( $form['fields'] as $field ) {
+		if ( $field['id'] != $field_id ) {
+			continue;
+		}
+
+		try {
+			$api      = new \GC_Notion\Notion_API_Client( $token );
+			$response = $api->get_database( $database_id );
+
+			foreach ( $response['properties'] as $property ) {
+				if ( rgar( $property, 'id' ) !== $property_id ) {
+					continue;
+				}
+
+				$type    = rgar( $property, 'type' );
+				$options = rgars( $property, $type . '/options' );
+				$choices = array_map( function( $option ) {
+					return array(
+						'value' => $option['id'],
+						'text'  => $option['name'],
+					);
+				}, $options );
+
+				$field['choices'] = $choices;
+
+				break;
+			}
+		} catch ( \Exception $e ) {
+			// noop
+		}
+	}
+
+	return $form;
+}, 10, 3);