how to use DD() method in Laravel projects?-CodePudding

I know that for some it might be stupid or funny question (but I am newbie) but I need to find know how to properly use DD() method in laravel projects.

For example - I have got tasks to debug some code and functionality in my project (PHP laravel). And it always takes me for ever to find the exact file or folder or code where the problem is.

My mentor says to use DD() method to find things faster (but for learning purposes he didn't explain me a lot about how to actually use it and said to find out my self), but said that I should start with Route (we use backpack as well for our project). So after finding Route (custom.php file) which controller connects to my required route what should I do next? How do I implement dd() method (or as my mentor says dd('call here') method) to fast find what I should be looking for to solve my problem and complete my task? Where should I write this dd() and how should I write it?

Thank you for the answer in advance!

for example I have a:

public function create(): View
{
return view('xxxxxx. \[
//
//
\]);
}

and if I put dd() anywhere in the code, I get error message in my URL :(

CodePudding user response：

dd stands for "Dump and Die."

Laravel's dd() function can be defined as a helper function, which is used to dump a variable's contents to the browser and prevent the further script execution.

Example:

dd($users,$variable1,$var2);

You can use dd() in blade

@foreach($users as $user)
  @dd($user)
  OR
  {{dd($user)}}
@endforeach

@dd($var1)

You can read this article, the have more example and comparison https://shouts.dev/articles/laravel-dd-vs-dump-vs-vardump-vs-printr-with-example

CodePudding user response：

first of all ,in Laravel we use dd() before return in order to read any variable. in controller we often use two kinds of variables : collection(which we get its members via foreach) or singular variable (we get it via its name)for example:$var = 1; dd($var). notice: if you are using ajax response you will not be able to see dd() results in page ,you can see the result via network tab in your browser (if u inspect your page).

CodePudding user response：

As Laravel is following model-view-controller or MVC design pattern. First go to the route and check which controller is called in the URL with the related URL. Then go to the controller. **dd**() function is basically a dump and die. you also can do this by **print** or **echo** function too.

Lets assume that I have a controller name ProductController where I have method name index.From where I need to show a list of products in a table.

// in controller

public function index()
{
  $products = Products::all();

  // here you think ,I need to check whether I am getting the output or 
  not.

  dd( $products );
//Or  echo $products;

  return view ('product.list',compact('products'));
}

let's suppose you are getting everything but in view when you loop through the products you declare the wrong variable name or mistakenly do some spelling mistakes. and want to see the result.

In view just do the dd() method by the following way:

{{ dd($products) }}