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 vote211 views2 answers
Old codestar text field
PHP
2 votes239 views2 answers
Route codeigniter
PHP
9 votes196 views6 answers
Laravel drop foreign key
PHP
0 vote241 views1 answer
Wordpress deactivate widgets gutenberg
PHP
0 vote226 views1 answer
Php concat variable and string
PHP
0 vote227 views1 answer
Laravel Mix npm run production error
PHP
0 vote230 views1 answer
Php pdo random multiple insert query
PHP
0 vote226 views1 answer
How to print image just on side where upload php
PHP
15 votes219 views3 answers
Laravel make model with migration 5.8
PHP
3 votes248 views3 answers
Wordpress logout
PHP Wordpress