Laravel foreign key constraint

Laravel foreign key

Schema::table('posts', function (Blueprint $table) {
    $table->unsignedBigInteger('user_id');

    $table->foreign('user_id')->references('id')->on('users');
});
OR
Schema::table('posts', function (Blueprint $table) {
    $table->foreignId('user_id')->constrained();
});

Foreign key in laravel migration

$table->unsignedBigInteger('user_id');
$table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');

Foreign key laravel migration

$table->foreign('column_name')->references('id')->on('table_name')->onDelete('cascade');

Create foreign key laravel migration

Schema::table('posts', function (Blueprint $table) {
    $table->unsignedBigInteger('user_id');

    $table->foreign('user_id')->references('id')->on('users');
});

Laravel foreign key constraint

public function up()
{
    Schema::create('replies', function (Blueprint $table) {
        $table->bigIncrements('id');
        $table->text('body');
        $table->unsignedBigInteger('question_id');
        $table->integer('user_id')->unsigned();
        $table->foreign('question_id')->references('id')->on('questions')->onDelete('cascade');
        $table->timestamps();
    });
}

Source: stackoverflow.com

Laravel foreign key

$table->foreignId('user_id')
      ->constrained()
      ->onUpdate('cascade')
      ->onDelete('cascade');

Source: laravel.com

Similar codes

1 vote350 views1 answer
How to insert multiple data at a time with create method in laravel
PHP
0 vote300 views1 answer
Php check if extension is installed
PHP
3 votes356 views1 answer
Print session in laravel
PHP Laravel
4 votes401 views2 answers
Pass parameter to view laravel
PHP Laravel
-1 vote308 views2 answers
Laravel OrderBy on Eloquent whereHas relationship
PHP
3 votes303 views2 answers
Laravel longblob migration
PHP
3 votes330 views2 answers
Php camelcase to snake case
PHP
2 votes311 views2 answers
Laravel get column field name
PHP
3 votes300 views1 answer
Lodash tester
PHP
0 vote317 views1 answer
Donut chart in PHP
PHP