giftflow_load_template( 'template-name.php', $args );

$template = new \GiftFlow\Frontend\Template();
$template->load_template( 'template-name.php', $args );

wp-content/plugins/giftflow/templates/

add_filter( 'giftflow_template_file', function( $template_file, $template_name, $args ) {
    if ( $template_name === 'donation-form.php' ) {
        return get_stylesheet_directory() . '/my-custom-donation-form.php';
    }
    return $template_file;
}, 10, 3 );

add_filter( 'giftflow_template_path', function( $template_path, $template_name ) {
    // Redirect only the campaign grid template
    if ( $template_name === 'campaign-grid.php' ) {
        return get_stylesheet_directory() . '/giftflow-custom/';
    }
    return $template_path;
}, 10, 2 );

add_filter( 'giftflow_get_template_part', function( $template, $slug, $name ) {
    // Custom override for a specific part
    $custom = get_stylesheet_directory() . "/giftflow/{$slug}-{$name}.php";
    if ( file_exists( $custom ) ) {
        return $custom;
    }
    return $template;
}, 10, 3 );

giftflow_donation_form_before_form         → Before the <form> content begins
giftflow_donation_form_before_donor_information → Before the donor name/email fields
giftflow_donation_form_after_donor_information  → After the donor fields (before anonymous checkbox)
giftflow_donation_form_after_payment_method     → After the payment method step (thank-you & error sections)
giftflow_donation_form_after_form          → After </form>

add_action( 'giftflow_donation_form_after_donor_information', function() {
    ?>
    <div class="donation-form__field">
        <label for="donor_phone">Phone Number (optional)</label>
        <input type="tel" id="donor_phone" name="donor_phone">
    </div>
    <?php
} );

giftflow_campaign_grid_before                    → Before the entire grid wrapper
giftflow_campaign_grid_before_container          → Inside the wrapper, before items start
giftflow_campaign_grid_before_item               → Before each campaign article, receives ($campaign, $campaign_id)
giftflow_campaign_grid_before_item_content       → Inside each article, before content
giftflow_campaign_grid_after_item_content        → Inside each article, after content
giftflow_campaign_grid_after_item                → After each campaign article
giftflow_campaign_grid_after_container           → After all items, before pagination
giftflow_campaign_grid_before_pagination         → Before the pagination nav
giftflow_campaign_grid_after_pagination          → After the pagination nav
giftflow_campaign_grid_after                     → After the entire grid wrapper
giftflow_campaign_grid_before_empty              → Inside empty state wrapper
giftflow_campaign_grid_after_empty               → Inside empty state wrapper, after message

add_action( 'giftflow_campaign_grid_before_item_content', function( $campaign, $campaign_id ) {
    $is_featured = get_post_meta( $campaign_id, '_is_featured', true );
    if ( $is_featured ) {
        echo '<span class="my-featured-badge">⭐ Featured</span>';
    }
}, 10, 2 );

giftflow_campaign_single_before_content   → Before the campaign page block content
giftflow_campaign_single_after_content    → After the campaign page block content

giftflow_donor_account_before_content     → Before the donor account block content
giftflow_donor_account_after_content      → After the donor account block content

giftflow_campaign_taxonomy_archive_before_content  → Before archive block content
giftflow_campaign_taxonomy_archive_after_content   → After archive block content

giftflow_before_template_load    → Fires before any template is included
giftflow_after_template_load     → Fires after any template is included

// Modify donation form field attributes
add_filter( 'giftflow_form_donation_form_atts', function( $atts, $campaign_id ) {
    $atts['min_amount'] = 5; // raise minimum to $5
    return $atts;
}, 10, 2 );
 
// Add/remove donation types shown on the form
add_filter( 'giftflow_form_donation_types', function( $donation_types, $campaign_id ) {
    // Remove recurring option for a specific campaign
    if ( $campaign_id === 42 ) {
        $donation_types = array_filter( $donation_types, fn($t) => $t['name'] !== 'recurring' );
    }
    return $donation_types;
}, 10, 2 );
 
// Modify campaign status bar template data
add_filter( 'giftflow_campaign_status_bar_data', function( $data, $post_id ) {
    $data['custom_label'] = 'Help us reach the goal!';
    return $data;
}, 10, 2 );
 
// Modify campaign grid query arguments
add_filter( 'giftflow_campaign_grid_query_args', function( $args, $atts ) {
    $args['meta_key']   = '_is_featured';
    $args['meta_value'] = '1';
    return $args;
}, 10, 2 );
 
// Change the "no campaigns found" message
add_filter( 'giftflow_campaign_grid_empty_message', function( $message ) {
    return 'There are no active campaigns right now. Check back soon!';
} );
 
// Modify the campaign grid item wrapper CSS class
add_filter( 'giftflow_campaign_grid_wrapper_class', function( $class ) {
    return $class . ' my-custom-grid-class';
} );
 
// Modify single campaign block content
add_filter( 'giftflow_campaign_single_block_content', function( $block_content ) {
    // You can replace or prepend/append to the Gutenberg block markup
    return $block_content;
} );

mkdir -p wp-content/themes/my-child-theme/giftflow
cp wp-content/plugins/giftflow/templates/donation-form.php \
   wp-content/themes/my-child-theme/giftflow/donation-form.php

<?php
if ( ! defined( 'ABSPATH' ) ) {
    exit;
}
 
// $campaign_id, $gateways, $campaign_title, etc. are all available here
?>
<div class="my-custom-donation-wrapper">
    <h2>Support: <?php echo esc_html( $campaign_title ); ?></h2>
 
    <form class="donation-form" id="donation-form-<?php echo esc_attr( $campaign_id ); ?>">
        <?php do_action( 'giftflow_donation_form_before_form', $args ); ?>
 
        <!-- Your custom layout here -->
        <input type="hidden" name="campaign_id" value="<?php echo esc_attr( $campaign_id ); ?>">
        <input type="hidden" name="wp_nonce" value="<?php echo esc_attr( wp_create_nonce( 'giftflow_donation_form' ) ); ?>">
 
        <?php /* ... rest of your custom form ... */ ?>
 
        <?php do_action( 'giftflow_donation_form_after_form', $args ); ?>
    </form>
</div>