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 vote164 views3 answers
Eloquent where raw
PHP
33 votes218 views6 answers
Laravel query builder
PHP Laravel
0 vote199 views1 answer
Laravel $browser->keys alt click
PHP Laravel
4 votes154 views2 answers
Call api with php
PHP
1 vote177 views2 answers
Laravel return response view
PHP
7 votes188 views2 answers
Date time format for laravel validation
PHP Laravel
0 vote166 views1 answer
Wp_signon wordpress login subdomain
PHP
0 vote153 views1 answer
Find common value from sub arrays
PHP
8 votes163 views6 answers
Php float value
PHP
7 votes169 views2 answers
Laravel ui
PHP Laravel