Using the Combo Blocks plugin, you can easily query posts by categories for Post Grid or Post Grid – Filterable Gutenberg blocks.
To begin, insert the “Post Grid” or “Post Grid – Filterable” block.
From the List View make sure you’ve selected Post Query nested block. This selection is important to access all the available block settings for “Post Query”.
Now under Query Post => Add Query Params select the Category In option
Expand the Category In selection and here you need to pass the category ID that you want to query from.
Not sure how to find the Category ID? Go to Posts => Categories, and Edit the category that you want to query from.
Now from the URL section, you’ll find the category ID.
That’s how you can query posts by categories for “Post Grid” or “Post Grid – Filterable” Gutenberg block. If you still need help, please create a support ticket on our forum.