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Undefined Variable in Blade View - Laravel Fix
This error occurs when a Blade view references a variable that wasn't passed from the controller.
The Error
Error Message
Undefined variable $variableCommon Causes
- 1 Variable not passed to view
- 2 Typo in variable name
- 3 Variable name mismatch between controller and view
- 4 Using compact() incorrectly
Solutions
1
Pass variable to view
PHP
return view('posts.index', [
'posts' => Post::all(),
]);
2
Use compact() correctly
PHP
$posts = Post::all();
$categories = Category::all();
return view('posts.index', compact('posts', 'categories'));
3
Use null coalescing in view
Blade
{{ $variable ?? 'Default value' }}
@isset($variable)
{{ $variable }}
@endisset
4
Share data globally with View::share
PHP
// In AppServiceProvider boot()
View::share('appName', config('app.name'));Need Help With Your Laravel Project?
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About Hafiz
Full Stack Developer from Italy. I build web applications with Laravel and Vue.js, and automate business processes. Creator of ReplyGenius, StudyLab, and other SaaS products.
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