Dropping column with foreign key Laravel error: General error: 1025 Error on rename

Question

I\'ve created a table using migration like this:

public function up()
{
    Schema::create(\'despatch_discrepancies\',  function($table) {
        $table->         


        

Answer 1

It turns out; when you create a foreign key like this:

$table->integer('pick_detail_id')->unsigned();
$table->foreign('pick_detail_id')->references('id')->on('pick_details');

Laravel uniquely names the foreign key reference like this:

___foreign
despatch_discrepancies_pick_detail_id_foreign (in my case)

Therefore, when you want to drop a column with foreign key reference, you have to do it like this:

$table->dropForeign('despatch_discrepancies_pick_detail_id_foreign');
$table->dropColumn('pick_detail_id');

Update:

Laravel 4.2+ introduces a new naming convention:

__foreign