The problem
When running migration, the last table end up with the error in the title.
My database is a local MySQL.
The error
Illuminate\Database\QueryException : SQLSTATE[HY000]: General error: 1005 Can't create table
shopping_list_develop
.#sql-1698_2b
(errno: 150 "Foreign key constraint is incorrectly formed") (SQL: alter tableproducts
add constraintproducts_shopping_list_id_foreign
foreign key (shopping_list_id
) referencesshopping_lists
(id
) on delete set null on update cascade)
Already tried
This is what I check:
- The parent table (
shopping_lists
) is created before the child table (products
). - The foreign key
shopping_list_id
is of the same type of the column it references. - The two tables,
shopping_lists
andproducts
have the same DB Engine (InnoDB).
I've read other answers but can't find a solution.
Migrations
2019_05_13_192170_create_shopping_lists_table.php
<?php
use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Carbon\Carbon;
class CreateShoppingListsTable extends Migration {
public function up()
{
Schema::create('shopping_lists', function(Blueprint $table) {
$table->bigIncrements('id');
$table->string('name')->nullable()->default(Carbon::now()->toDateString());
$table->unsignedBigInteger('user_id');
$table->timestamps();
$table->foreign('user_id')->references('id')->on('users')
->onDelete('cascade')
->onUpdate('cascade');
});
}
public function down()
{
Schema::table('shopping_lists', function(Blueprint $table) {
$table->dropForeign(['user_id']);
});
Schema::dropIfExist('shopping_lists');
}
}
2019_05_13_192700_create_products_table.php
<?php
use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
class CreateProductsTable extends Migration {
public function up()
{
Schema::create('products', function(Blueprint $table) {
$table->bigIncrements('id');
$table->string('name');
$table->string('brand')->nullable()->default(null);
$table->float('price', 6,2)->nullable()->default(null);
$table->string('note')->nullable()->default(null);
$table->string('salable_type');
$table->unsignedBigInteger('salable_id');
$table->unsignedBigInteger('shopping_list_id');
$table->timestamps();
$table->foreign('shopping_list_id')->references('id')->on('shopping_lists')
->onDelete('set null')
->onUpdate('cascade');
});
}
public function down()
{
Schema::table('products', function(Blueprint $table) {
$table->dropForeign(['shopping_list_id']);
});
Schema::dropIfExist('products');
}
}
Thanks for the help and ask me any extra info if you need.