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

0 vote124 views1 answer
Display page template using functions.php
PHP
35 votes142 views6 answers
Laravel make auth
PHP Laravel
0 vote119 views1 answer
Laravel connection timed out
PHP
0 vote92 views1 answer
Shipping rates by city for woocommerce does not work!
PHP
48 votes182 views6 answers
Create migration with model laravel
PHP Laravel
0 vote142 views1 answer
Validate file count with validate in laravel
PHP Laravel
1 vote118 views1 answer
Php numbers from 1 to 100 array
PHP
0 vote114 views2 answers
Download html content from url php
PHP
31 votes114 views5 answers
Php remove last newline from string
PHP
1 vote163 views1 answer
Laravel http retry
PHP