Variable in blade is undefined when passing variable from controller Laravel
P粉056618053
P粉056618053 2023-08-31 15:58:04
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<p>So I want to return some string from <code>model</code> and <code>controller</code> but it always says undefined variable, although when I use <code> When checked with dd($ it successfully passes a)</code> and <code>dd($b)</code>. What did i do wrong? </p> <p><code>about.blade:</code></p> <pre class="brush:php;toolbar:false;">@extends('layout.template'); @section('homeContainer'); <p> {{ $a }} </p> <br> <p>{{ $b }}</p> @endsection</pre> <p><code>About the controller:</code></p> <pre class="brush:php;toolbar:false;"><?php namespace App\Http\Controllers; use Illuminate\Http\Request; use App\Models\AboutModel; class AboutController extends Controller { // public static function info(){ $a = AboutModel::info(); $b = "This data is from controller"; return view('about', compact('a', 'b')); } }</pre> <p><code>About the model:</code></p> <pre class="brush:php;toolbar:false;"><?php namespace App\Models; use Illuminate\Database\Eloquent\Factories\HasFactory; use Illuminate\Database\Eloquent\Model; class AboutModel extends Model { use HasFactory; public static function Info(){ $a = "This value is from model"; return $a; } }</pre> <p><code>Directions: </code></p> <pre class="brush:php;toolbar:false;"><?php use Illuminate\Support\Facades\Route; use App\Http\Controllers\AboutController; /* |------------------------------------------------- ----------------------- | Web Routes |------------------------------------------------- ----------------------- | | Here is where you can register web routes for your application. These | routes are loaded by the RouteServiceProvider and all of them will | be assigned to the "web" middleware group. Make something great! | */ Route::get('/', function () { return view('welcome'); }); Route::get('/about', function () { return view('about', [ "name" => AboutController::info(), ]); });</pre></p>
P粉056618053
P粉056618053

reply all(2)
P粉111641966

The controller never runs, only the callbacks in the web.php file. This means you don't have a and b variables, only a name variable

P粉194919082

thank you for your reply! Turns out I mistakenly declared the model as a variable and a route,

For the route I changed it to

Route::get('/about',[AboutController::class,'info']);

For controllers and models I remove the static and change the model declaration

Controller:

public function info()
    {
        $model = new AboutModel();
        $a = $model->Info();
        $b = "This data is from controller";

        return view('about', compact('a', 'b'));
    }

model:

public function Info(){
        $a = "This value is from model";
        return $a;
    }
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