$table->unsignedBigInteger('user_id');
$table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');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();
});// one_line code for foreign in laravel
$table->foreignId('user_id')->constrained()->onDelete('cascade');update your `integer('user_id')` to `bigInteger('user_id')`
public function up() {
Schema::create('evaluation', function (Blueprint $table) {
$table->increments('id');
$table->bigInteger('user_id')->unsigned()->index();
$table->timestamps();
$table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
});
}Schema::table('posts', function (Blueprint $table) {
$table->unsignedBigInteger('user_id');
$table->foreign('user_id')->references('id')->on('users');
});//acording to laravel 7>=
Schema::table('posts', function (Blueprint $table) {
$table->foreignId('user_id')->constrained();
});
//for deffirent table
$table->foreignId('user_id')->constrained('users');
//for taking action
$table->foreignId('user_id')
->constrained()
->onUpdate('cascade')
->onDelete('cascade');