![]() ![]() HTML doesn’t provide a limit on the number of array elements that you can submit in a form, so if we had to validate each individually, it would be a headache. We have three iterations of our items to be validated. For instance, we want to store different variations of our items, like items that are different colors and have different prices. Let’s say we’re making data collection even more complex by having a form with repeatable parts. Note that we use the syntax ‘field rule’ when we’re making custom messages. 'price.numeric' => 'You have invalid characters in the price field' 'price.required' => 'You must have a price.', For example, if we want to customize the error message when someone enters an alphabetical character in the price field, we can do something like this: public function messages() Dot notation is also important when we want to customize error messages. Do something or just save straight to the db like belowĪs you can see, we denote nested attributes by using dot notation. We can then use the validated data in our controller, like so: public function store(ProductRequest $request) The rules method will look like this: public function rules() Let’s say we’re now using a form request to validate our incoming data because we want to be better at organizing our data. On the frontend, it would look something like this: Let’s say that I want to make my inventory software a bit more complicated by having an item field with two nested fields: name and description. This is personally my favorite way to expand validation, as I am able to neatly organize everything when I make custom rules, use After Validation Hooks, or expand rules, etc. $validator = Validator::make($request->all(), [Īnother way Laravel devs expand on validation is by separating validation from the controller with the use of form requests. One way they do this is by using the Validator object. Some Laravel devs choose to expand on this by using more complex methods of validation. However, if an XHR request is made (like ones that come from an API), a redirect will not be made but it will instead respond with JSON and a 422 HTTP status code. When the items above are validated, an HTTP redirect is made with the related error messages. These are just a few of the many rules that come pre-built into Laravel. For example, in the code block above, you will see max:255, which means that the item_name should not surpass 255 characters regex:/^+$/ means we only want alphanumeric characters. It’s amazing that, with some rules, you can provide more context as to what you want. ![]() Notice that beside each key (attribute) is a string where pipes separate all the rules that we want to validate the attribute. The code above is the simplest way we could validate requests in our controller. We need to validate these items when a POST request is made. In our form, we have fields for the item name, the SKU, and the price. Our model to access and manage our table is Product and the controller will be named ProductController In this software, we’ll store our items in the “Products” table of our database. Let’s say we’re building a very simple inventory software. ![]() Because of this, many devs choose to house their validation methods here, too. Usually, HTTP requests coming into Laravel are mostly handled in the controller (there are other places where requests are handled such as middleware, but that’s a discussion for another post). ![]()
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