Adding a notice on Cart and checkout page based on item custom field highest value

Question

I have a a custom field value for each product. This custom field is inserted with the code below :

<?php
    // Insert a Custom Admin Field
add_action( 'woocommerce_product_options_general_product_data', 'woo_add_custom_general_fields' );

function woo_add_custom_general_fields() {

    echo '<div class="options_group">';

    woocommerce_wp_text_input( array(
        'id'                => 'days_manufacture',
        'label'             => __( 'Days for Manufacture', 'woocommerce' ),
        'placeholder'       => '',
        'description'       => __( 'Insert here', 'woocommerce' ),
        'type'              => 'number',
        'custom_attributes' => array(
            'step'  => 'any',
            'min'   => '1'
        ),
    ) );

    echo '</div>';
}


// Save the field
add_action( 'woocommerce_process_product_meta', 'woo_add_custom_general_fields_save' );

function woo_add_custom_general_fields_save( $post_id ){
$woocommerce_number_field = $_POST['days_manufacture'];
if( !empty( $woocommerce_number_field ) )
    update_post_meta( $post_id, 'days_manufacture', esc_attr( $woocommerce_number_field ) );
}


// Store custom field
add_action( 'woocommerce_add_cart_item_data', 'save_days_field', 10, 2 );

function save_days_field( $cart_item_data, $product_id ) {
    $special_item = get_post_meta( $product_id , 'days_manufacture',true );
    if(!empty($special_item)) {
        $cart_item_data[ 'days_manufacture' ] = $special_item;

        // below statement make sure every add to cart action as unique line item
        $cart_item_data['unique_key'] = md5( microtime().rand() );
        WC()->session->set( 'days_manufacture', $special_item );
    }
    return $cart_item_data;
}


// Render meta on cart and checkout
add_filter( 'woocommerce_get_item_data', 'rendering_meta_field_on_cart_and_checkout', 10, 2 );

function rendering_meta_field_on_cart_and_checkout( $cart_data, $cart_item ) {
    $custom_items = array();
    // Woo 2.4.2 updates
    if( !empty( $cart_data ) ) {
        $custom_items = $cart_data;
    }
    if( isset( $cart_item['days_manufacture'] ) ) {
        $custom_items[] = array( "name" => __( "Days", "woocommerce" ), "value" => $cart_item['days_manufacture'] );
    }
    return $custom_items;
} ?>

This code works perfectly.

Now I would like on Cart and checkout (before coupon notice) pages to display the highest value of this custom field (days_manufacture) on a custom message, when multiple items are in Cart, like in this screenshot.

How can I achieve this?

Thanks.

`woocommerce_process_product_meta` is for when you are saving a product, not ordering a product. You probably need `woocommerce_add_order_item_meta`. It looks like you need to add custom product data, in which case I always recommend [Product Add-Ons](https://woocommerce.com/products/product-add-ons/) — helgatheviking, Sep 08 '16 at 22:15
Of course! For example : I have in my cart two products , Product A has value as the variable " days_manufacture " 15 and the product B has 25. I would like the greatest value , in which case it was 25 presented above shop_table with the following phrase : Your order will be produced in " higher variable " days . — Felipe Honorato, Sep 08 '16 at 22:19
@LoicTheAztec I've just insert a imagem on my post. Tks for patience! =) — Felipe Honorato, Sep 09 '16 at 12:30

LoicTheAztec · Accepted Answer · 2016-09-11T21:17:31.917

Here is a custom function that will display a message on cart and checkout (before coupon notice) pages with the highest number of days of manufacture…

Here is the code:

add_action('woocommerce_before_cart', 'days_of_manufacture');
add_action('woocommerce_before_checkout_form', 'days_of_manufacture', 5);
function days_of_manufacture() {
        $day_txt = ' ' . __('day', 'your_theme_domain_slug' );
        $days_txt = ' ' . __('days', 'your_theme_domain_slug' );
        $text = __('Your Order will be produced in: ', 'your_theme_domain_slug' );
        $max_days = 0;

        foreach( WC()->cart->get_cart() as $cart_item )
            if($cart_item['days_manufacture'] > $max_days)
                $max_days = $cart_item['days_manufacture'];

        if($max_days != 0) {
            if ($max_days == 1)
                $days_txt = $day_txt;

            $output = $text . $max_days . $days_txt;
            echo "<div class='woocommerce-info'>$output</div>";
        }
}

This code goes in function.php file of your active child theme (or theme) or also in any plugin file.

This code is tested and works.

Please could you look at this question ?http://stackoverflow.com/questions/39459649/woocommerce-custom-notice-on-in-thankyou-and-my-account-view-order-pages. Thanks!! — Felipe Honorato, Sep 12 '16 at 22:22

score 0 · Answer 2 · answered Sep 08 '16 at 20:57

0

Store the variable in the $_SESSION, then loop thru them and pick the highest, so you can use it later anywhere in your code

answered Sep 08 '16 at 20:57

JorgeObregon

3,020
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Adding a notice on Cart and checkout page based on item custom field highest value

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