Answers for "laravel how to update the colunm where theri is ni index or primaray key"

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();
});

laravel migration drop foreign keys

$table->dropIndex(['state']); // Drops index 'geo_state_index'