WooCommerce Products Custom Fields

functions.php

http://www.benblanco.com/how-to-add-custom-product-tab-to-woocommerce-single-product-page/
http://www.remicorson.com/mastering-woocommerce-products-custom-fields/


// Display Fields
add_action( 'woocommerce_product_options_general_product_data', __NAMESPACE__.'\woo_add_custom_general_fields' );
function woo_add_custom_general_fields() {

	global $woocommerce, $post;

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

	// Text Field
	woocommerce_wp_text_input(
		array(
			'id'          => '_text_field',
			'label'       => __( 'My Text Field', 'woocommerce' ),
			'placeholder' => 'http://',
			'desc_tip'    => 'true',
			'description' => __( 'Enter the custom value here.', 'woocommerce' )
		)
	);

	// Number Field
	woocommerce_wp_text_input(
		array(
			'id'                => '_number_field',
			'label'             => __( 'My Number Field', 'woocommerce' ),
			'placeholder'       => '',
			'description'       => __( 'Enter the custom value here.', 'woocommerce' ),
			'type'              => 'number',
			'custom_attributes' => array(
				'step' 	=> 'any',
				'min'	=> '0'
			)
		)
	);

	// Textarea
	woocommerce_wp_textarea_input(
		array(
			'id'          => '_textarea',
			'label'       => __( 'My Textarea', 'woocommerce' ),
			'placeholder' => '',
			'description' => __( 'Enter the custom value here.', 'woocommerce' )
		)
	);
	// Select
	woocommerce_wp_select(
		array(
			'id'      => '_select',
			'label'   => __( 'My Select Field', 'woocommerce' ),
			'options' => array(
				'one'   => __( 'Option 1', 'woocommerce' ),
				'two'   => __( 'Option 2', 'woocommerce' ),
				'three' => __( 'Option 3', 'woocommerce' )
			)
		)
	);
	// Checkbox
	woocommerce_wp_checkbox(
		array(
			'id'            => '_checkbox',
			'wrapper_class' => 'show_if_simple',
			'label'         => __('My Checkbox Field', 'woocommerce' ),
			'description'   => __( 'Check me!', 'woocommerce' )
		)
	);
// Product Select
?>
<p class="form-field product_field_type">
	<label for="product_field_type"><?php _e( 'Product Select', 'woocommerce' ); ?></label>
	<select id="product_field_type" name="product_field_type[]" class="ajax_chosen_select_products" multiple="multiple" data-placeholder="<?php _e( 'Search for a product&hellip;', 'woocommerce' ); ?>">
		<?php
		$product_field_type_ids = get_post_meta( $post->ID, '_product_field_type_ids', true );
		$product_ids = ! empty( $product_field_type_ids ) ? array_map( 'absint',  $product_field_type_ids ) : null;
		if ( $product_ids ) {
			foreach ( $product_ids as $product_id ) {
				$product      = get_product( $product_id );
				$product_name = woocommerce_get_formatted_product_name( $product );
				echo '<option value="' . esc_attr( $product_id ) . '" selected="selected">' . esc_html( $product_name ) . '</option>';
			}
		}
		?>
	</select> <img class="help_tip" data-tip='<?php _e( 'Your description here', 'woocommerce' ) ?>' src="<?php echo $woocommerce->plugin_url(); ?>/assets/images/help.png" height="16" width="16" />
</p>
	<?php
	// Custom field Type
	?>
	<p class="form-field custom_field_type">
		<label for="custom_field_type"><?php echo __( 'Custom Field Type', 'woocommerce' ); ?></label>
		<span class="wrap">
		<?php $custom_field_type = get_post_meta( $post->ID, '_custom_field_type', true ); ?>
			<input placeholder="<?php _e( 'Field One', 'woocommerce' ); ?>" class="" type="number" name="_field_one" value="<?php echo $custom_field_type[0]; ?>" step="any" min="0" style="width: 80px;" />
		<input placeholder="<?php _e( 'Field Two', 'woocommerce' ); ?>" type="number" name="_field_two" value="<?php echo $custom_field_type[1]; ?>" step="any" min="0" style="width: 80px;" />
	</span>
		<span class="description"><?php _e( 'Place your own description here!', 'woocommerce' ); ?></span>
	</p>
	<?php
	echo '</div>';

}



// Save Fields
add_action( 'woocommerce_process_product_meta', __NAMESPACE__.'woo_add_custom_general_fields_save' );
function woo_add_custom_general_fields_save( $post_id ){

	// Text Field
	$woocommerce_text_field = $_POST['_text_field'];
	if( !empty( $woocommerce_text_field ) )
		update_post_meta( $post_id, '_text_field', esc_attr( $woocommerce_text_field ) );

	// Number Field
	$woocommerce_number_field = $_POST['_number_field'];
	if( !empty( $woocommerce_number_field ) )
		update_post_meta( $post_id, '_number_field', esc_attr( $woocommerce_number_field ) );

	// Textarea
	$woocommerce_textarea = $_POST['_textarea'];
	if( !empty( $woocommerce_textarea ) )
		update_post_meta( $post_id, '_textarea', esc_html( $woocommerce_textarea ) );

	// Select
	$woocommerce_select = $_POST['_select'];
	if( !empty( $woocommerce_select ) )
		update_post_meta( $post_id, '_select', esc_attr( $woocommerce_select ) );

	// Checkbox
	$woocommerce_checkbox = isset( $_POST['_checkbox'] ) ? 'yes' : 'no';
	update_post_meta( $post_id, '_checkbox', $woocommerce_checkbox );

	// Custom Field
	$custom_field_type =  array( esc_attr( $_POST['_field_one'] ), esc_attr( $_POST['_field_two'] ) );
	update_post_meta( $post_id, '_custom_field_type', $custom_field_type );

	// Hidden Field
	$woocommerce_hidden_field = $_POST['_hidden_field'];
	if( !empty( $woocommerce_hidden_field ) )
		update_post_meta( $post_id, '_hidden_field', esc_attr( $woocommerce_hidden_field ) );

	// Product Field Type
	$product_field_type =  $_POST['product_field_type'];
	update_post_meta( $post_id, '_product_field_type_ids', $product_field_type );

}