Sindbad~EG File Manager

-- Add area_id, district_id, and assembly_id columns to nonmember_registrations table
ALTER TABLE `nonmember_registrations` 
ADD COLUMN `area_id` int(11) AFTER `phone`,
ADD COLUMN `district_id` int(11) AFTER `area_id`,
ADD COLUMN `assembly_id` int(11) AFTER `district_id`;

-- Add foreign key constraints
ALTER TABLE `nonmember_registrations`
ADD CONSTRAINT `fk_nonmember_registrations_area` FOREIGN KEY (`area_id`) REFERENCES `areas` (`id`) ON DELETE SET NULL,
ADD CONSTRAINT `fk_nonmember_registrations_district` FOREIGN KEY (`district_id`) REFERENCES `districts` (`id`) ON DELETE SET NULL,
ADD CONSTRAINT `fk_nonmember_registrations_assembly` FOREIGN KEY (`assembly_id`) REFERENCES `assemblies` (`id`) ON DELETE SET NULL;