Laravel - Update Records

Quiz

We can update the records using the DB facade with update method. The syntax of update method is as shown in the following table.

Syntax	int update(string $query, array $bindings = array())
Parameters	$query(string) − query to execute in database $bindings(array) − values to bind with queries
Returns	int
Description	Run an update statement against the database.

Example

Observe the following example to understand more about updating records −

Step 1 − Execute the below command to create a controller called StudViewController.

php artisan make:controller StudUpdateController --plain

Step 2 − After successful execution, you will receive the following output −

Step 3 − Copy the following code to file app/Http/Controllers/ StudUpdateController.php

app/Http/Controllers/StudUpdateController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use DB;
use App\Http\Requests;
use App\Http\Controllers\Controller;

class StudUpdateController extends Controller {
   public function index() {
      $users = DB::select('select * from student');
      return view('stud_edit_view',['users'=>$users]);
   }
   public function show($id) {
      $users = DB::select('select * from student where id = ?',[$id]);
      return view('stud_update',['users'=>$users]);
   }
   public function edit(Request $request,$id) {
      $name = $request->input('stud_name');
      DB::update('update student set name = ? where id = ?',[$name,$id]);
      echo "Record updated successfully.<br/>";
      echo '<a href = "/edit-records">Click Here</a> to go back.';
   }
}

Step 4 − Create a view file called

resources/views/stud_edit_view.blade.php and copy the following code in that file.

resources/views/stud_edit_view.blade.php

<html>
   <head>
      <title>View Student Records</title>
   </head>
   
   <body>
      
      <table border = "1">
         <tr>
            <td>ID</td>
            <td>Name</td>
            <td>Edit</td>
         </tr>
         @foreach ($users as $user)
         <tr>
            <td>{{ $user->id }}</td>
            <td>{{ $user->name }}</td>
            <td><a href = 'edit/{{ $user->id }}'>Edit</a></td>
         </tr>
         @endforeach
      </table>
   </body>
</html>

Step 5 − Create another view file called

resources/views/stud_update.php and copy the following code in that file.

resources/views/stud_update.php

<html>
   
   <head>
      <title>Student Management | Edit</title>
   </head>
   
   <body>
      <form action = "/edit/<?php echo $users[0]->id; ?>" method = "post">
         <input type = "hidden" name = "_token" value = "<?php echo csrf_token(); ?>">
      
         <table>
            <tr>
               <td>Name</td>
               <td>
                  <input type = 'text' name = 'stud_name' 
                     value = '<?php echo$users[0]->name; ?>'/>
               </td>
            </tr>
            <tr>
               <td colspan = '2'>
                  <input type = 'submit' value = "Update student" />
               </td>
            </tr>
         </table>
      </form>
   </body>
</html>

Step 6 − Add the following lines in app/Http/routes.php.

app/Http/routes.php.

Route::get('edit-records','StudUpdateController@index');
Route::get('edit/{id}','StudUpdateController@show');
Route::post('edit/{id}','StudUpdateController@edit');

Step 7 − Visit the following URL to update records in database.

http://localhost:8000/edit-records

Step 8 − The output will appear as shown in the following image.

Step 9 − Click the edit link on any record and you will be redirected to a page where you can edit that particular record.

Step 10 − The output will appear as shown in the following image.

Step 11 − After editing that record, you will see a prompt as shown in the following image.

laravel_working_with_database.htm

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