Validate Quantity of Products
Explore how to validate product quantities in a Rails API by creating and applying custom validators. Understand how to prevent orders exceeding stock levels, add error messages for out-of-stock products, and test your implementation to ensure reliable order processing.
We'll cover the following...
We'll cover the following...
At the start of this chapter, we added the attribute quantity to the Product model. It is now time to validate that the quantity of product is sufficient for the order to be placed. To make things more interesting, we will do this using a custom validator.
First, we need to add a validators directory under the ...