wp_attach_theme_preview_middleware() – Adds a middleware to `apiFetch` to set the theme for the preview.
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Description
Adds a middleware to apiFetch
to set the theme for the preview.
This adds a wp_theme_preview
URL parameter to API requests from the Site Editor, so they also respond as if the theme is set to the value of the parameter.
Usage
wp_attach_theme_preview_middleware();
Parameters
Returns
void
Source
File name: wordpress/wp-includes/theme-previews.php
Lines:
1 to 15 of 15
function wp_attach_theme_preview_middleware() { // Don't allow non-admins to preview themes. if ( ! current_user_can( 'switch_themes' ) ) { return; } wp_add_inline_script( 'wp-api-fetch', sprintf( 'wp.apiFetch.use( wp.apiFetch.createThemePreviewMiddleware( %s ) );', wp_json_encode( sanitize_text_field( wp_unslash( $_GET['wp_theme_preview'] ) ) ) ), 'after' ); }