Feature: Expose post_types field to Templates REST API

[Debarghya-Banerjee]

Trac Ticket: Core-61308

Overview

This pull request adds a new post_types field to the existing WordPress REST API endpoint for templates (/wp/v2/templates). This enhancement allows users to filter templates based on the post types they are intended for, thereby improving usability and functionality in the site editor templates screen.

Changes Made

Modified get_item_schema():

• Added a new property, post_types, to the JSON schema for templates.

• The post_types field is defined as an array of strings, describing the associated post types for each template.

Updated prepare_item_for_response():

• Implemented logic to fetch and include the post_types information in the API response.

• Ensured that the post_types field is populated based on the associated post types stored in the template's metadata.

Benefits

• Improved Filtering: Users can now filter templates directly by their associated post types, making it easier to find relevant templates for specific content types.

• Enhanced API Usability: By exposing the post_types field, we align the API capabilities with user expectations and common use cases.

[github-actions]

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Props debarghyabanerjee, martinkrcho, costasovo.

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[github-actions]

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[martinkrcho]

Changes look good. @Debarghya-Banerjee Would you be able to extend the existing unit tests?

[Debarghya-Banerjee]

Hi @martinkrcho , I have fixed the failing test cases. Can you please check it. Thanks.

[costasovo]

@martinkrcho, @Debarghya-Banerjee, Thanks for working on this! 👍 I would love to see this merged. Is there anything I could do to help you with the PR?

[martinkrcho]

Updated tests look good to me. @Debarghya-Banerjee can you merge latest trunk and re-run tests? I would approve this if the tests run OK.

[Debarghya-Banerjee]

Sure @martinkrcho will do that.