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@basepack
Last active November 6, 2018 14:13
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WooCommerce : add custom fields to product variations v2.0
<?php
//Display Fields
add_action( 'woocommerce_product_after_variable_attributes', 'variable_fields', 10, 3 );
//JS to add fields for new variations
add_action( 'woocommerce_product_after_variable_attributes_js', 'variable_fields_js' );
//Save variation fields
add_action( 'woocommerce_save_product_variation', 'save_variable_fields', 10, 1 );
/**
* Create new fields for variations
*
*/
function variable_fields( $loop, $variation_data, $variation ) {
?>
<tr>
<td>
<?php
// Text Field
woocommerce_wp_text_input(
array(
'id' => '_text_field['.$loop.']',
'label' => __( 'My Text Field', 'woocommerce' ),
'placeholder' => 'http://',
'desc_tip' => 'true',
'description' => __( 'Enter the custom value here.', 'woocommerce' ),
'value' => get_post_meta($variation->ID, '_text_field'], true)
)
);
?>
</td>
</tr>
<tr>
<td>
<?php
// Number Field
woocommerce_wp_text_input(
array(
'id' => '_number_field['.$loop.']',
'label' => __( 'My Number Field', 'woocommerce' ),
'desc_tip' => 'true',
'description' => __( 'Enter the custom number here.', 'woocommerce' ),
'value' => get_post_meta($variation->ID, '_number_field'], true),
'custom_attributes' => array(
'step' => 'any',
'min' => '0'
)
)
);
?>
</td>
</tr>
<tr>
<td>
<?php
// Textarea
woocommerce_wp_textarea_input(
array(
'id' => '_textarea['.$loop.']',
'label' => __( 'My Textarea', 'woocommerce' ),
'placeholder' => '',
'description' => __( 'Enter the custom value here.', 'woocommerce' ),
'value' => get_post_meta($variation->ID, '_textarea'], true)
)
);
?>
</td>
</tr>
<tr>
<td>
<?php
// Select
woocommerce_wp_select(
array(
'id' => '_select['.$loop.']',
'label' => __( 'My Select Field', 'woocommerce' ),
'description' => __( 'Choose a value.', 'woocommerce' ),
'value' => get_post_meta($variation->ID, '_select'], true),
'options' => array(
'one' => __( 'Option 1', 'woocommerce' ),
'two' => __( 'Option 2', 'woocommerce' ),
'three' => __( 'Option 3', 'woocommerce' )
)
)
);
?>
</td>
</tr>
<tr>
<td>
<?php
// Checkbox
woocommerce_wp_checkbox(
array(
'id' => '_checkbox['.$loop.']',
'label' => __('My Checkbox Field', 'woocommerce' ),
'description' => __( 'Check me!', 'woocommerce' ),
'value' => get_post_meta($variation->ID, '_checkbox'], true)
)
);
?>
</td>
</tr>
<tr>
<td>
<?php
// Hidden field
woocommerce_wp_hidden_input(
array(
'id' => '_hidden_field['.$loop.']',
'value' => 'hidden_value'
)
);
?>
</td>
</tr>
<?php
}
/**
* Create new fields for new variations
*
*/
function variable_fields_js() {
?>
<tr>
<td>
<?php
// Text Field
woocommerce_wp_text_input(
array(
'id' => '_text_field[ + loop + ]',
'label' => __( 'My Text Field', 'woocommerce' ),
'placeholder' => 'http://',
'desc_tip' => 'true',
'description' => __( 'Enter the custom value here.', 'woocommerce' ),
'value' => ''
)
);
?>
</td>
</tr>
<tr>
<td>
<?php
// Number Field
woocommerce_wp_text_input(
array(
'id' => '_number_field[ + loop + ]',
'label' => __( 'My Number Field', 'woocommerce' ),
'desc_tip' => 'true',
'description' => __( 'Enter the custom number here.', 'woocommerce' ),
'value' => '',
'custom_attributes' => array(
'step' => 'any',
'min' => '0'
)
)
);
?>
</td>
</tr>
<tr>
<td>
<?php
// Textarea
woocommerce_wp_textarea_input(
array(
'id' => '_textarea[ + loop + ]',
'label' => __( 'My Textarea', 'woocommerce' ),
'placeholder' => '',
'description' => __( 'Enter the custom value here.', 'woocommerce' ),
'value' => '',
)
);
?>
</td>
</tr>
<tr>
<td>
<?php
// Select
woocommerce_wp_select(
array(
'id' => '_select[ + loop + ]',
'label' => __( 'My Select Field', 'woocommerce' ),
'description' => __( 'Choose a value.', 'woocommerce' ),
'value' => '',
'options' => array(
'one' => __( 'Option 1', 'woocommerce' ),
'two' => __( 'Option 2', 'woocommerce' ),
'three' => __( 'Option 3', 'woocommerce' )
)
)
);
?>
</td>
</tr>
<tr>
<td>
<?php
// Checkbox
woocommerce_wp_checkbox(
array(
'id' => '_checkbox[ + loop + ]',
'label' => __('My Checkbox Field', 'woocommerce' ),
'description' => __( 'Check me!', 'woocommerce' ),
'value' => '',
)
);
?>
</td>
</tr>
<tr>
<td>
<?php
// Hidden field
woocommerce_wp_hidden_input(
array(
'id' => '_hidden_field[ + loop + ]',
'value' => 'hidden_value'
)
);
?>
</td>
</tr>
<?php
}
/**
* Save new fields for variations
*
*/
function save_variable_fields( $post_id ) {
if (isset( $_POST['variable_sku'] ) ) :
$variable_sku = $_POST['variable_sku'];
$variable_post_id = $_POST['variable_post_id'];
// Text Field
$_text_field = $_POST['_text_field'];
for ( $i = 0; $i < sizeof( $variable_sku ); $i++ ) :
$variation_id = (int) $variable_post_id[$i];
if ( isset( $_text_field[$i] ) ) {
update_post_meta( $variation_id, '_text_field', stripslashes( $_text_field[$i] ) );
}
endfor;
// Number Field
$_number_field = $_POST['_number_field'];
for ( $i = 0; $i < sizeof( $variable_sku ); $i++ ) :
$variation_id = (int) $variable_post_id[$i];
if ( isset( $_text_field[$i] ) ) {
update_post_meta( $variation_id, '_number_field', stripslashes( $_number_field[$i] ) );
}
endfor;
// Textarea
$_textarea = $_POST['_textarea'];
for ( $i = 0; $i < sizeof( $variable_sku ); $i++ ) :
$variation_id = (int) $variable_post_id[$i];
if ( isset( $_textarea[$i] ) ) {
update_post_meta( $variation_id, '_textarea', stripslashes( $_textarea[$i] ) );
}
endfor;
// Select
$_select = $_POST['_select'];
for ( $i = 0; $i < sizeof( $variable_sku ); $i++ ) :
$variation_id = (int) $variable_post_id[$i];
if ( isset( $_select[$i] ) ) {
update_post_meta( $variation_id, '_select', stripslashes( $_select[$i] ) );
}
endfor;
// Checkbox
$_checkbox = $_POST['_checkbox'];
for ( $i = 0; $i < sizeof( $variable_sku ); $i++ ) :
$variation_id = (int) $variable_post_id[$i];
if ( isset( $_checkbox[$i] ) ) {
update_post_meta( $variation_id, '_checkbox', stripslashes( $_checkbox[$i] ) );
}
endfor;
// Hidden field
$_hidden_field = $_POST['_hidden_field'];
for ( $i = 0; $i < sizeof( $variable_sku ); $i++ ) :
$variation_id = (int) $variable_post_id[$i];
if ( isset( $_hidden_field[$i] ) ) {
update_post_meta( $variation_id, '_hidden_field', stripslashes( $_hidden_field[$i] ) );
}
endfor;
endif;
}
@colibriinteractive
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@roltex @whoaloic
I use

get_post_meta($variation_id, '_class_duration', true);

to display it in the frontend, where _class_duration is the name of my variable. As I saved just a number I want it to be returned not as an array but the value which is why I use the true.
See https://developer.wordpress.org/reference/functions/get_post_meta/ for further details.

Full code looks like this:

$all_orders = get_posts( array(
'numberposts' => -1,
'meta_key' => '_customer_user',
'meta_value' => get_current_user_id(),
'post_type' => wc_get_order_types(),
'post_status' => array_keys( wc_get_order_statuses() ),
) );

foreach($all_orders as $order){
$order_id = $order->ID;
$order = wc_get_order($order_id);

foreach ($order->get_items() as $item_id => $item_obj) {
	$variation_id = $item_obj->get_variation_id();
	$months = get_post_meta($variation_id, _class_duration, true);
	echo $months;
}

}

(Sorry, seems like the code is not correctly recognised as one by syntax highlighting. Not sure why)

Hope it helps anyway.
Best
Felix

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