13.exemplu closure controller
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The document discusses two methods for displaying flower records from a database in Laravel. The first method uses route closures to define the logic for displaying all records and a single record. The second method moves this logic to controller actions defined in a FlowersController. Both methods retrieve flower records from the database and pass them to views for display in a table. Conditional logic is added to the view to display a message if no records are found.
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13.exemplu closure controller
- 1. Exemplu MVC view single/all
- 3. 1. Composer ->Install(dev) 2. Composer->Update(dev) 3. Install LaravelCollective 4. Modificati numele fisierului: .env.example ->.env
- 4. Vederea tuturor inregistrarilor(metoda1) cu closure • Pentru a crea un model vom scrie: php artisan make:model Flower • Astfel a fost creat articolul /app/Flower.php <?php namespace App; use IlluminateDatabaseEloquentModel; class Flower extends Model { } ?>
- 5. Routes • In fisierul /routes/web.php adaugati linia: <?php use AppFlower; Route::get('flowers',function(){ $flowers=Flower::all(); return view('flowers.show')->with('flowers', $flowers); }); ?> Astfel vor fi extrase toate inregistrarile din db si vor fi incarcate in variabila $flowers, care va fi trimisa vederii.
- 6. Vederea /resources/views/flowers/show.blade.php <!DOCTYPE html> <html> <head><title>Flowers</title></head> <h1>Flowers data</h1> <table> <tr> <th>Nume</th> <th>Marime</th> <th>Culoare</th> <th>Pret</th> </tr> @foreach($flowers as $flower) <tr> <td><?php echo link_to("/flowers/{$flower->nume}", $flower->nume);?></td> <td><?php echo $flower->culoare;?></td> <td><?php echo $flower->marime;?></td> <td><?php echo $flower->pret;?></td> </tr> @endforeach </table> </html>
- 8. Vederea unei inregistrari particulare(metoda1)- cu closer • Editati fisierul /routes/web.php astfel: <?php use AppFlower; Route:get('flowers',function(){ $flowers=Flower::all(); return view('flowers.show')->with('flowers', $flowers); }); Route::get('flowers/{nume}', function($nume){ //select * from flowers where flower=$flower LIMIT 1 $flower=Flower::where('nume','=',$nume)->first(); return view('flowers.showflower', ['flower'=>$flower]); }); ?>
- 9. Vederea unei inregistrari Vederea /resources/views/flowers/showflower.blade.php <!DOCTYPE html> <html> <head><title>Flowers</title></head> <body> <h1>Details for: <?php echo $flower->nume;?></h1> <h3>Culoare: <?php echo $flower->culoare;?></h3> <h3>Marime: <?php echo $flower->marime;?></h3> <h3>Pret: <?php echo $flower->pret;?></h3> <a href='http://localhost/laravelproj/public/flowers'>Back</a> </body> </html>
- 10. METODA2 – acelasi lucru cu controllere in routes(fara closure)!!! • Acelasi lucru se poate obtine si fara closure, scriind codul functiilor closure (functiile din fisierul routes) direct in functiile din FlowersController, astfel: • Editati fisierul /routes/web.php astfel: <?php use AppFlower; Route::get('flowers', 'FlowersController@index'); Route::get('flowers/{nume}', 'FlowersController@show'); ?>
- 11. • Creati controller-ul /app/Http/Controllers/FlowersController.php care va contine codul functiilor closure (functiile din fisierul routes) in functiile sale index si show: <?php namespace AppHttpControllers; use AppHttpRequests; use AppHttpControllersController; use IlluminateHttpRequest; //adaugati linia urmatoare use AppFlower; class FlowersController extends Controller { public function index() { $flowers=Flower::all(); return view('flowers.show')->with('flowers', $flowers); } public function show($nume) { //select * from flowers where flower=$flower LIMIT 1 $flower=Flower::where('nume','=',$nume)->first(); return view('flowers.showflower', ['flower'=>$flower]); }?> Pentru a vizualiza in browser, se folosesc vederile definite anterior.
- 12. • Pentru a verifica daca sunt inregistrari in baza de date, inainte de a afisa datele, vom modifica vederea /resources/views/flowers/show.blade.php astfel: <!DOCTYPE html> <html> <head><title>Flowers</title></head> <h1>Flowers data</h1> @if (count($flowers)==0) Nu sunt inregistrari in db! @else <table> <tr> <th>Nume</th> <th>Marime</th> <th>Culoare</th> <th>Pret</th> </tr> @foreach($flowers as $flower) <tr> <td><?php echo link_to("/flowers/{$flower->nume}", $flower->nume);?></td> <td><?php echo $flower->culoare;?></td> <td><?php echo $flower->marime;?></td> <td><?php echo $flower->pret;?></td> </tr> @endforeach </table> @endif </html>