gppa-force-repop-on-submit.php: Added new snippet.

Author: spivurno

gp-populate-anything/gppa-force-repop-on-submit.php

@@ -0,0 +1,63 @@
+<?php
+/**
+ * Gravity Perks // Populate Anything // Force Repopulation on Form Submission to Prevent Tampering
+ * https://gravitywiz.com/documentation/gravity-forms-populate-anything/
+ *
+ * This snippet forces GP Populate Anything to repopulate field values on form submission,
+ * overriding any potential user tampering with the $_POST data. This ensures that dynamically
+ * populated fields always contain the correct values based on their population settings.
+ *
+ * Instructions:
+ * 1. [Install the snippet.](https://gravitywiz.com/documentation/managing-snippets/#where-do-i-put-snippets)
+ * 1. Add the CSS class `gppa-secure` to any field where you want to force repopulation.
+ * 2. The snippet will automatically replace submitted values with the correct populated values.
+ */
+add_filter( 'gform_pre_process', function( $form ) {
+	
+	// Skip if GPPA is not available
+	if ( ! function_exists( 'gp_populate_anything' ) ) {
+		return $form;
+	}
+
+	$field_values = gp_populate_anything()->get_posted_field_values( $form );
+	
+	foreach ( $form['fields'] as $field ) {
+		
+		// Skip fields that don't have the security CSS class
+		if ( ! $field->cssClass || strpos( $field->cssClass, 'gppa-secure' ) === false ) {
+			continue;
+		}
+		
+		// Only process GPPA-enabled fields
+		if ( ! gp_populate_anything()->is_field_dynamically_populated( $field ) ) {
+			continue;
+		}
+
+		$working_field_values = $field_values;
+		unset( $working_field_values[ $field->id ] );
+
+		$populated_field = gp_populate_anything()->populate_field( $field, $form, $working_field_values, null, true );
+		$correct_value   = $populated_field['field_value'];
+
+		$working_field_values[ $field->id ] = $correct_value;
+		
+		// Handle multi-input fields (like Name, Address, etc.)
+		$is_multi_input = is_array( $field->inputs ) && ! empty( $field->inputs );
+		
+		if ( $is_multi_input ) {
+			// For multi-input fields, override each input with correct value
+			foreach ( $field->inputs as $input ) {
+				$input_id = str_replace( '.', '_', $input['id'] );
+				$post_key = "input_{$input_id}";
+				$correct_input_value = rgar( $correct_value, $input['id'] );
+				
+				// Override with the correct populated value
+				$_POST[$post_key] = $correct_input_value;
+			}
+		} else {
+			$_POST["input_{$field->id}"] = $correct_value;
+		}
+	}
+	
+	return $form;
+}, 2 );