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Version: 0.4.2 (Previous)

✅ Category Validator Blocks

Category validator blocks provide validation functions for category-related operations in Nodeblocks applications. These validators ensure data integrity and proper business logic validation for category operations.

🎯 Overview​

Category validator blocks are designed to:

  • Validate category existence before operations
  • Ensure data integrity in category workflows
  • Provide reusable validation logic for category operations
  • Support composition with other category blocks
  • Handle error cases with proper error responses

📋 Category Validator Types​

Existence Validators​

Validators that check if categories exist in the database.

🔧 Available Category Validators​

doesCategoryExist​

Validates that a category exists in the database by checking the categoryId parameter.

Purpose: Ensures the requested category exists before proceeding with operations

Parameters:

  • payload: RouteHandlerPayload containing context and params
  • payload.context.db: Database connection with categories collection
  • payload.params.requestParams.categoryId: Category ID to validate

Returns: void - Passes through if category exists

Throws: NodeblocksError (404) with message "Category does not exist" if category not found

Usage:

import { validators } from '@nodeblocks/backend-sdk';

const { doesCategoryExist } = validators;

// Usage in a route pipeline:
compose(categorySchema, doesCategoryExist, updateCategoryHandler);

🔗 Related Documentation​