PHP

disable foreign key laravel

//...
class ClearOldOauthRelations extends Migration
{
    public function up()
    {
        Schema::disableForeignKeyConstraints();
        // drop foreign keys
        Schema::table('oauth_access_tokens', function (BluePrint $table) {
            $table->dropForeign('oauth_access_tokens_session_id_foreign');
        });
        //...
        Schema::enableForeignKeyConstraints();
    }
    //...
}

larael drop foreign key

Schema::table('posts', function (Blueprint $table) {
	$table->dropForeign(['category_id']);
});

remove foreign key constraint laravel

Schema::table('table_name', function (Blueprint $table) {
    $table->dropForeign(['foreign_key']);
    $table->dropColumn('column_key');
});

PS: usually foreign_key = column_key

ex: 

Schema::table('despatch_discrepancies', function (Blueprint $table) {
    $table->dropForeign(['pick_detail_id']);
    $table->dropColumn('pick_detail_id');
});

laravel remove foreign key

$table->dropForeign('posts_user_id_foreign');

laravel drop foreign key

// Primary table name, from Schema::table(<table>)
// Primary column, from $table->foreign(<column>)
$table->dropForeign('<table>_<column>_foreign');