Below I have a class “WC_Deposits_Add_To_Cart”. I want to edit the output of this class using add_filter in my functions.php.
The problem is I am a little confused on how to properly build my filter function to change the output of a class. I know how to filter functions but not classes.
Looking at the script it seems that the html syntax is not being returned nor echoed, and I see no variable being attached to the html output. I want to edit the output of the html syntax at the very bottom of the class.
For example the html starting at <div id='wc-deposits-options-form'> to the very last closing div on line 176.
How would I go about doing this?
I have been all over the wordpress codex and other forums but I have seen no examples of add_filte functions filter classes that output html like the one below.
Any guidance is appreciated.
<?php
/*Copyright: © 2014 Abdullah Ali.
License: GNU General Public License v3.0
License URI: http://www.gnu.org/licenses/gpl-3.0.html
*/
if (!defined('ABSPATH')) {
exit; // Exit if accessed directly
}
class WC_Deposits_Add_To_Cart
{
public function __construct(&$wc_deposits)
{
// Add the required styles
add_action('wp_enqueue_scripts', array($this, 'enqueue_scripts'));
add_action('wp_enqueue_scripts', array($this, 'enqueue_inline_styles'));
// Hook the add to cart form
add_action('woocommerce_before_add_to_cart_button', array($this, 'before_add_to_cart_button'));
add_filter('woocommerce_add_cart_item_data', array($this, 'add_cart_item_data'), 10, 2);
}
/**
* @brief Load the deposit-switch logic
*
* @return void
*/
public function enqueue_scripts()
{
if (is_product()) {
global $post;
$product = wc_get_product($post->ID);
if ($product && isset($product->wc_deposits_enable_deposit) && $product->wc_deposits_enable_deposit === 'yes')
{
wp_enqueue_script('wc-deposits-add-to-cart', WC_DEPOSITS_PLUGIN_URL . '/assets/js/add-to-cart.js');
$message_deposit = get_option('wc_deposits_message_deposit');
$message_full_amount = get_option('wc_deposits_message_full_amount');
$message_deposit = stripslashes($message_deposit);
$message_full_amount = stripslashes($message_full_amount);
$script_args = array(
'message' => array(
'deposit' => __($message_deposit, 'woocommerce-deposits'),
'full' => __($message_full_amount, 'woocommerce-deposits')
)
);
if ($product->is_type('variable') && $product->wc_deposits_amount_type !== 'fixed') {
foreach($product->get_children() as $variation_id) {
$variation = $product->get_child($variation_id);
if (!is_object($variation)) continue;
$tax = get_option('wc_deposits_tax_display', 'no') === 'yes' ?
$variation->get_price_including_tax() - $variation->get_price_excluding_tax() : 0;
$amount = woocommerce_price($variation->get_price_excluding_tax() *
($product->wc_deposits_deposit_amount / 100.0) + $tax);
$script_args['variations'][$variation_id] = array($amount);
}
}
wp_localize_script('wc-deposits-add-to-cart', 'wc_deposits_add_to_cart_options', $script_args);
}
}
}
/**
* @brief Enqueues front-end styles
*
* @return void
*/
public function enqueue_inline_styles()
{
if (is_product()) {
global $post;
$product = wc_get_product($post->ID);
if ($product && isset($product->wc_deposits_enable_deposit) && $product->wc_deposits_enable_deposit === 'yes')
{
// prepare inline styles
$colors = wc_deposits_woocommerce_frontend_colours();
$gstart = $colors['primary'];
$gend = wc_deposits_adjust_colour($colors['primary'], 15);
$style = "@media only screen {
#wc-deposits-options-form input.input-radio:enabled ~ label { color: {$colors['secondary']}; }
#wc-deposits-options-form div a.wc-deposits-switcher {
background-color: {$colors['primary']};
background: -moz-gradient(center top, {$gstart} 0%, {$gend} 100%);
background: -moz-linear-gradient(center top, {$gstart} 0%, {$gend} 100%);
background: -webkit-gradient(linear, left top, left bottom, from({$gstart}), to({$gend}));
background: -webkit-linear-gradient({$gstart}, {$gend});
background: -o-linear-gradient({$gstart}, {$gend});
background: linear-gradient({$gstart}, {$gend});
}
#wc-deposits-options-form .amount { color: {$colors['highlight']}; }
#wc-deposits-options-form .deposit-option { display: inline; }
}";
wp_add_inline_style('wc-deposits-frontend-styles', $style);
}
}
}
public function before_add_to_cart_button()
{
global $product;
if ($product && isset($product->wc_deposits_enable_deposit) && $product->wc_deposits_enable_deposit === 'yes')
{
$tax = get_option('wc_deposits_tax_display', 'no') === 'yes' ?
$product->get_price_including_tax() - $product->get_price_excluding_tax() : 0;
if ($product->wc_deposits_amount_type === 'fixed') {
$amount = woocommerce_price($product->wc_deposits_deposit_amount + $tax);
if ($product->is_type('booking') && $product->has_persons() && $product->wc_deposits_enable_per_person === 'yes') {
$suffix = __('per person', 'woocommerce-deposits');
} else if ($product->is_type('booking')) {
$suffix = __('per booking', 'woocommerce-deposits');
} else if (!$product->is_sold_individually()) {
$suffix = __('per item', 'woocommerce-deposits');
} else {
$suffix = '';
}
} else {
if ($product->is_type('booking')) {
$amount = '<span class='amount'>' . round($product->wc_deposits_deposit_amount, 2) . '%' . '</span>';
$suffix = __('of total value', 'woocommerce-deposits');
} else if ($product->is_type('variable')) {
$min_variation = $product->get_child($product->min_price_variation_id);
$max_variation = $product->get_child($product->max_price_variation_id);
$tax_min = get_option('wc_deposits_tax_display', 'no') === 'yes' ? $min_variation->get_price_including_tax() - $min_variation->get_price_excluding_tax() : 0;
$tax_max = get_option('wc_deposits_tax_display', 'no') === 'yes' ? $max_variation->get_price_including_tax() - $max_variation->get_price_excluding_tax() : 0;
$amount_min = woocommerce_price($min_variation->get_price_excluding_tax() * ($product->wc_deposits_deposit_amount / 100.0) + $tax_min);
$amount_max = woocommerce_price($max_variation->get_price_excluding_tax() * ($product->wc_deposits_deposit_amount / 100.0) + $tax_max);
$amount = $amount_min . ' – ' . $amount_max;
} else {
$amount = woocommerce_price($product->get_price_excluding_tax() * ($product->wc_deposits_deposit_amount / 100.0) + $tax);
}
if (!$product->is_sold_individually()) {
$suffix = __('per item', 'woocommerce-deposits');
} else {
$suffix = '';
}
}
$default = get_option('wc_deposits_default_option', 'deposit');
$deposit_checked = ($default === 'deposit' ? 'checked='checked'' : '');
$full_checked = ($default === 'full' ? 'checked='checked'' : '');
$deposit_text = get_option('wc_deposits_button_deposit');
$full_text = get_option('wc_deposits_button_full_amount');
if ($deposit_text === false) $deposit_text = __('Pay Deposit', 'woocommerce-deposits');
if ($full_text === false) $full_text = __('Full Amount', 'woocommerce-deposits');
$deposit_text = stripslashes($deposit_text);
$full_text = stripslashes($full_text);
?>
<div id='wc-deposits-options-form'>
<hr class='separator' />
<label class='deposit-option'>
<?php echo __('Deposit Option:', 'woocommerce-deposits'); ?>
<span id='deposit-amount'><?php echo $amount; ?></span>
<span id='deposit-suffix'><?php echo $suffix; ?></span>
</label>
<div class="deposit-options switch-toggle switch-candy switch-woocommerce-deposits">
<input id='pay-deposit' name='deposit-radio' type='radio' <?php echo $deposit_checked; ?> class='input-radio' value='deposit'>
<label for='pay-deposit' onclick=''><span><?php _e($deposit_text, 'woocommerce-deposits'); ?></span></label>
<?php if (isset($product->wc_deposits_force_deposit) && $product->wc_deposits_force_deposit === 'yes') { ?>
<input id='pay-full-amount' name='deposit-radio' type='radio' class='input-radio' disabled>
<label for='pay-full-amount' onclick=''><span><?php _e($full_text, 'woocommerce-deposits'); ?></span></label>
<?php } else { ?>
<input id='pay-full-amount' name='deposit-radio' type='radio' <?php echo $full_checked; ?> class='input-radio' value='full'>
<label for='pay-full-amount' onclick=''><span><?php _e($full_text, 'woocommerce-deposits'); ?></span></label>
<?php } ?>
<a class='wc-deposits-switcher'></a>
</div>
<span class='deposit-message' id='wc-deposits-notice'></span>
</div>
<?php
}
}
public function add_cart_item_data($cart_item_meta, $product_id)
{
$product = wc_get_product($product_id);
if ($product->wc_deposits_enable_deposit === 'yes')
{
if (!isset($_POST['deposit-radio'])) {
$default = get_option('wc_deposits_default_option');
$_POST['deposit-radio'] = $default ? $default : 'deposit';
}
$cart_item_meta['deposit'] = array(
'enable' => $product->wc_deposits_force_deposit === 'yes' ? 'yes' : ($_POST['deposit-radio'] === 'full' ? 'no' : 'yes')
);
}
return $cart_item_meta;
}
}
Here I am trying build my filter function in my functions.php
class WC_Deposits_Add_To_Cart {
public function save_posts_hook() {
return '<h1>My function works!</h1>';
}
}
$my_class = new WC_Deposits_Add_To_Cart;
add_action( 'before_add_to_cart_button', array( $my_class, 'save_posts_hook' ) );
One option could be to use output buffering.
So did someone else write the WC_Deposits_Add_To_Cart class and your trying to hook into it?
Right now then class when created will output the html in the before_add_to_cart_button method.
You can see in the __construct method
If you want to add some html before that html do this.
Or this to add html after
The third parameter there is the priority which decides the order the actions are fired, which by default is 10.
Update: If you want to override the output from that class, you can remove their action:
Note that your remove_action has to run after their class is initiated. One way to do this is add an action to
woocommerce_before_add_to_cart_buttonwhich is sure to run after they added it, like shown above: