[Resolved] Echoing a Generateblock in a custom function

[Marcel]

Hello
Question: I use a code snippet on my cart page to show a specific message for my customers.
Is it possible to insert a specific block (made with Generateblocks) in a custom function?

[David]

Hi there,

Possible but tricky and most likely would create issues maintaining the styles.

Why not use the Block Element ?

https://docs.generatepress.com/article/block-element-overview/

Select the Hook > Custom Hook and add paste in your hook name ie. woocommerce_proceed_to_checkout

[Marcel]

Hmmm, this sounds interesting and it might work. But where should I insert my custom function?
As you can see on my code snippet (which works fine if I add it in my function.php), I add an action and a function:

add_action( 'woocommerce_proceed_to_checkout', 'wpdesk_cart_message' );
/**
 * Add a specific message to WooCommerce cart page
 *
 */
function wpdesk_cart_message() {
	echo '<p>This is a specific message</p>';
}

[David]

If all you want is to display a block in that location then you do not need the function.
Simply create the Block Element and set the Hook as i explained above.

[Marcel]

Okay, I tried and it works if I want to show the same Block Element for doesn’t matter what products are in the cart, and understand I do not need a function for that.

However, if I would like to add some conditions, for example, to show the Block Element “A” if product A is in the cart or to show the Block Element “B” if product B is in the cart, do you think it is possible? Of course, I need to use a function here.

I specify I know how to manipulate conditions (if, elseif and so on) in a function, but I don’t know how I could use the blocks in this case.

[David]

You could use the generate_block_element_display filter to selectively display which block element for example:

add_filter( 'generate_block_element_display', function( $display, $element_id ) {
  if ( 123 === $element_id && is_my_custom_condition() ) {
     $display = false;
  }

  return $display;
}, 10, 2 );

the 123 is the Block Elements ID.
In the example this would remove the Block element if:

a. its ID matches
AND
b. your custom condition is met.

[Marcel]

David,

The filter what are you talking about (generate_block_element_display) should be inserted on my function.php, right?

[David]

Thats correct.

[Marcel]

Okay, and in my Block Element I have to add in the Custom Hook name:
generate_block_element_display, is it correct?

[David]

No in your Block Element you add the custom hook name which is the one you had in your add_action:

woocommerce_proceed_to_checkout

Create your various block elements all with the same hook.
You should see all blocks being displayed on the checkout.

Then the add_filter function i provided here:

https://generatepress.com/forums/topic/echoing-a-generateblock-in-a-custom-function/#post-1511311

Goes in your functions PHP.
As long as your custom condition is valid, it will remove the Block element with the same ID.

[Author]

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