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Source View: rest_{$this->post_type}_item_schema

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Line Code
2456            * Filters the post's schema.
2457            *
2458            * The dynamic portion of the filter, `$this->post_type`, refers to the
2459            * post type slug for the controller.
2460            *
2461            * @since 5.4.0
2462            *
2463            * @param array $schema Item schema data.
2464            */
2465           $schema = apply_filters( "rest_{$this->post_type}_item_schema", $schema );
2466
2467           // Emit a _doing_it_wrong warning if user tries to add new properties using this filter.
2468           $new_fields = array_diff( array_keys( $schema['properties'] ), $schema_fields );
2469           if ( count( $new_fields ) > 0 ) {
2470                _doing_it_wrong(
2471                     __METHOD__,
2472                     sprintf(
2473                          /* translators: %s: register_rest_field */
2474                          __( 'Please use %s to add new schema properties.' ),