Laravel Route - Check if ID does not exist and show 404

user_2468603 0
Viewed 6543

I don't want to show the page if the ID does not exist.

How can I check this in my web.php routes in Laravel?

I currently have the following route:

Route::get('/public/{project_id}', 'ProjectController@public');

How can I do a conditional check to see if project_id exists?

I saw there was an option for Route::bind in the routing docs -- is that a solution? Thanks

Update Note: Slightly different than the Laravel 4 approach as binding seems to have been baked in to the route class.

laravel-routing laravel
5 Answers

What you want to use is called Route Model Binding. Laravel does what you want out of the box. If the ID is not in the database, it shows a 404 page. However, you need to change your route:

Assuming your Model is called Project, the route should look like this:

Route::get('/public/{project}', 'ProjectController@public');

And your ProjectController should look like this:

public function public(Project $project) {

This way Laravel automatically resolves the project with the ID you provide and injects it into the $project variable. If no record with the ID exists, laravel redirects to 404

user_92952520

Adding to Patrick Schocke's answer.

If you do not want to use Route Model Binding, you can explicitly check in the controller 

public function public($project_id) {
    $projectExists = Project::where('id', $project_id)->exists();

    abort_unless($projectExists, 404, 'Project not found');

   ...
    }
}
user_83980850

Just use laravel's findOrFail() methode. This method will retrieve the first result of the query; however, if no result is found a 404 HTTP response is automatically sent.

public function public ($project_id) {
    $project = Project::findOrFail($project_id);
}

source : https://laravel.com/docs/5.8/eloquent#retrieving-single-models

user_112932420

You can check if project_id does not exist then return 404 error by calling abort() function.

  public function public($project_id) {
        $project_id_exist = Project::where('id', $project_id)->first();
        if(!$project_id_exist){
            return abort(404);
        }
    }
user_61377720

You can achieve this by using laravel route model binding functionality

your route will be 

Route::get('/public/{project}', 'ProjectController@public');

your controller will be 

public function public(Project $project) {
       // Do your work here using $project model
       //  If a matching model instance is not found in the database, a 404 HTTP response will automatically be generated. 
}
user_116470350
Related