Wordpress - Woocommerce plugin development - php

Question

i'm actually developping an ERP for a client and i'm quite a neophyte with the development on wordpress. I separated all in different classes to add new tabs and panels for the selection of the product type and right now I try to add those informations to the database with the meta data, I want to serialize the informations of the product that I want to add then serialize the informations of the product and the informations of the tab that I created.
Here's my code :
<?php
/**
* Created by PhpStorm.
* User: Rockerz
* Date: 15/06/17
* Time: 21:18
*/
class WC_Product_Rental_Schedule_Tab_view {
public static function Inithook_schedule(){
add_action( 'woocommerce_product_data_panels',
['WC_Product_Rental_Schedule_Tab_view','Render_Schedule'] );
}
/**
* XXX Rename it Render_Product_Tab_Form
* Custom Tab Panels informations
*/
public static function Render_Schedule(){
global $post;
?><div id='product_dyu' class='panel woocommerce_options_panel'>
<div class='options_group'>
<?php
woocommerce_wp_text_input(
array(
'id' => 'date_in',
'label' => __( 'Date in', 'woocommerce' ),
'desc_tip' => 'true',
'description' => __( 'Date in', 'woocommerce' ),
'type' => 'date',
)
);
woocommerce_wp_text_input(
array(
'id' => 'date_out',
'label' => __( 'Date out', 'woocommerce' ),
'desc_tip' => 'true',
'description' => __( 'Date out', 'woocommerce' ),
'type' => 'date',
)
);
woocommerce_wp_select( array(
'id' => 'status',
'name' => 'status[]',
'class' => 'status',
'label' => __('Status', 'woocommerce'),
'options' => array(
'1' => 'Pending',
'2' => 'In-Stock',
'3' => 'Rent',
'4' => 'deprecated',
'5' => 'Sold',
))
);
$users = get_users(array('fields'=>array('ID', 'user_nicename')));
$selectUser = array(
'id' => 'users',
'name' => 'users[]',
'class' => 'users',
'label' => __('Users', 'woocommerce'),
);
foreach($users as $user){
$selectUser['options'][$user->ID] = $user->user_nicename;
}
woocommerce_wp_select($selectUser);
?>
</div>
</div>
<?php
}
}
this is the informations of the panel that I want to add to the database.
I don't know how to add those infos to the database with the meta, all I know is that I have to serialize all this before adding it to the DB.

Answer 1

You probably will not need to serialize anything yourself. WordPress abstracts that away with its APIs. Look into update_post_meta(). For adding the meta data to the posts (woocommerce products are a custom post type.)
So when do you use it?
You can hook it to the woocommerce_process_product_meta hook that is fired when a product is saved. I'm not sure why you are using a static function for your init but I'm going to assume you know. That said add the hook.
You can then use the function you are hooking on to check the $_POST variable for the ids of your inputs. That would look something like this:
//This goes in you init or constructor
add_action( 'woocommerce_process_product_meta', array( __CLASS__, 'save_fields' ), 1, 2 );
//This processes and saves data in post_meta
function save_fields( $post_id, $product ) {
$status = $_POST['status'];
if ( ! empty( $status ) ) {
update_post_meta( $post_id, '{META_KEY_NAME}', esc_attr( $status ) );
}
}
Extra tip:
Besides my answer I see you're using PhpStorm. One of the most valuable tools I used when learning my way around Woocommerce was PhpStorm's "go to definition" feature. The official docs are just autogenerated from the DocBlocks and leave a lot to be desired. I found it invaluable to read through and jump around the code.