I´ve spent the whole day trying to figure out what is happening with the following migration.
This the migration of the table. My idea is to use ‘id_stays_abroad’ and ‘user_id’ as foreign keys.
class CreateBookingStaysAbroad extends Migration { /** * Run the migrations. * * @return void */ public function up() { Schema::create('booking__stays__abroads', function (Blueprint $table) { $table->bigIncrements('id'); $table->timestamps(); $table->unsignedInteger('id_stays_abroad')->nullable(); $table->unsignedInteger('user_id')->nullable(); $table->string('status')->nullable(); $table->date('departure_date'); $table->date('return_date'); $table->integer('number_weeks'); }); } /** * Reverse the migrations. * * @return void */ public function down() { Schema::dropIfExists('booking__stays__abroad'); } }
This is the other migration to add the foreign keys
class AddForeignKeyBookingStaysAbroadTable extends Migration { /** * Run the migrations. * * @return void */ public function up() { Schema::table('booking__stays__abroads', function($table) { $table->foreign('id_stays_abroad') ->references('id') ->on('stays_abroads'); $table->foreign('user_id') ->references('id') ->on('users'); }); } /** * Reverse the migrations. * * @return void */ public function down() { Schema::table('booking__stays__abroads', function (Blueprint $table) { $table->dropForeign('booking__stays__abroads_id_stays_abroad_foreign'); $table->dropForeign('booking__stays__abroads_user_id_foreign'); }); } }
When I run php artisan migrate I got the following error:
SQLSTATE[HY000]: General error: 1215 Cannot add foreign key constraint (SQL: alter table booking__stays__abroads
add constraint booking__stays__abroads_id_stays_abroad_foreign
foreign key (id_stays_abroad
) references stays_abroads
(id
))
Thanks in advance, guys.
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Answer
You are not using the same column definition for id
and id_stays_abroad
. Use unsignedBigInteger
instead of unsignedInteger
.
$table->unsignedBigInteger('id_stays_abroad')->nullable(); $table->unsignedBigInteger('user_id')->nullable();