gistfile1.txt

	public function get_item_permissions_check( $request ) {
		$post = $this->get_post( $request['id'] );
		if ( is_wp_error( $post ) ) {
			return $post;
		}
		if ( $post && ! $this->check_update_permission( $post ) ) {
			return false;
		}
		
               return parent::get_item_permissions_check( $request );
	}
  
	public function get_items_permissions_check( $request ) {
		$post_type = get_post_type_object( $this->post_type );
		if ( ! current_user_can( $post_type->cap->edit_posts ) ) {
		    if ( 'edit' === $request['context'] ) {
			return new WP_Error( 'rest_forbidden_context', __( 'Sorry, you are not allowed to edit posts in this post type.' ), array( 'status' => rest_authorization_required_code() ) );
		    } 
		    return false;
		}
		return true;
	}

gistfile2.txt

public function get_items_permissions_check( $request ) {
		$tax_obj = get_taxonomy( $this->taxonomy );
		if ( ! $tax_obj || ! $this->check_is_taxonomy_allowed( $this->taxonomy ) ) {
			return false;
		}
		if ( ! current_user_can( $tax_obj->cap->edit_terms ) ) {
		     if ( 'edit' === $request['context'] ) {
			return new WP_Error( 'rest_forbidden_context', __( 'Sorry, you are not allowed to edit terms in this taxonomy.' ), array( 'status' => rest_authorization_required_code() ) );
		     } 
		     return false;
		}
		return true;
	}
  
  public function get_item_permissions_check( $request ) {
		$term = $this->get_term( $request['id'] );
		if ( is_wp_error( $term ) ) {
			return $term;
		}
		if ( ! current_user_can( 'edit_term', $term->term_id ) ) {
			if ( 'edit' === $request['context'] ) {
			     return new WP_Error( 'rest_forbidden_context', __( 'Sorry, you are not allowed to edit this term.' ), array( 'status' => rest_authorization_required_code() ) );
			} 
			return false;
		}
		return true;
	}