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On . By CodimTh
Category:

For foreign key migrations instead of integer() use unsignedInteger() type or integer()->unsigned(), otherwise you may get SQL errors.

Example for field 'user_id':

Schema::create('posts', function (Blueprint $table) {
    $table->id();
    $table->string('title');
    $table->text('content');
    $table->timestamps();

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

you can also you this unsignedInteger():

$table->unsignedInteger('user_id');

 

You can also use unsignedBigInteger() if that other column is bigInteger() type.

$table->unsignedBigInteger('todo_id');

 

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Riadh Rahmi

Senior Web Developer (Drupal & Laravel)

I am a senior web developer, I have experience in planning and developing large scale dynamic web applications especially in Drupal and Laravel.

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