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I´m doing migrations in Laravel and this error happens when I proceed with the commandPHP artisan migrate:
In Connection.php line 664:
SQLSTATE[HY000]: General error: 3780 Referencing column 'user_id' and referenced column 'id' in foreign key constraint 'almacen_movimientos_user_id_foreign' are incompatible. (SQL: alter table
almacen_movimientosadd constraintalmacen_movimientos_user_id_foreignforeign key (user_id) referencesusers(id
) on delete restrict)
In PDOStatement.php line 129:
SQLSTATE[HY000]: General error: 3780 Referencing column 'user_id' and referenced column 'id' in foreign key constraint 'almacen_movimientos_user_id_foreign' are incompatible.
My migrations look like this:
almacen_movimientos table
public function up()
{
Schema::create('almacen_movimientos', function (Blueprint $table) {
$table->unsignedBigInteger('id');
$table->integer('cliente_proveedor_id');
$table->integer('empresa_id');
$table->integer('user_id');
$table->enum('tipo' , ['ENTRADA' , 'SALIDA' , 'REUBICACION' , 'TRASPASO' , 'DEVOLUCION' , 'MSRO' , 'ENTRADA POR TRASPASO' , 'SALIDA POR TRASPASO'])->nullable();
$table->string('referencia' , 255)->nullable();
$table->string('observaciones' , 255)->nullable();
$table->timestamp('created_at');
$table->timestamp('updated_at');
$table->timestamp('deleted_at');
$table->string('transportista' , 255)->nullable();
$table->string('operador' , 255)->nullable();
$table->string('procedencia' , 255)->nullable();
$table->integer('almacen_id')->nullable();
$table->foreign('cliente_proveedor_id')->references('id')->on('empresas')->onDelete('restrict');
$table->foreign('empresa_id')->references('id')->on('empresas')->onDelete('restrict');
$table->foreign('user_id')->references('id')->on('users')->onDelete('restrict');
$table->foreign('almacen_id')->references('id')->on('almacenes')->onDelete('restrict');
});
}
Users Table
public function up()
{
Schema::create('users', function (Blueprint $table) {
$table->unsignedBigInteger('id');
$table->string('name' , 255);
$table->string('apellido_paterno' , 115)->nullable();
$table->string('apellido_materno' , 115)->nullable();
$table->dateTime('fecha_nacimiento')->nullable();
$table->string('telefono1' , 10)->nullable();
$table->string('telefono2' , 10)->nullable();
$table->string('calle' , 255)->nullable();
$table->string('numero' , 45)->nullable();
$table->string('colonia' , 255)->nullable();
$table->string('codigo_postal' , 6)->nullable();
$table->string('email' , 255)->unique();
$table->string('user' , 20)->nullable()->unique();
$table->string('password' , 255);
$table->string('palabra_secreta' , 255);
$table->string('remember_token' , 100)->nullable();
$table->unsignedInteger('empresa_id')->nullable();
$table->timestamp('created_at');
$table->timestamp('updated_at');
$table->timestamp('deleted_at');
$table->foreign('empresa_id')->references('id')->on('empresas')->onDelete('restrict');
});
}
Can somebopdy tell me what am I doing wrong? I cannot fix this.
Thank you.
Regards.
Inusers table you have defined primary key with id as unsigned bigint and inalmacen_movimientos table the referenceduser_id is defined as int
change
$table->integer('user_id');
to
$table->unsignedBigInteger('user_id');
The structure and data type of PRIMARY KEY and FOREIGN KEY must be same
You can also solve in a more elegant way changing in yout schema ofalmacen_movimientos you should change:
$table->integer('user_id');
$table->foreign('user_id')->references('id')->on('users')->onDelete('restrict');
with
$table->foreignId('user_id')->constrained()->onDelete('restrict');
Have a look at the documentation, you can do it from Laravel 7 on: https://laravel.com/docs/8.x/migrations#foreign-key-constraints
$table->increments('id')
use unsignedInteger in your foreign key
$table->id()
use unsignedBigInteger in your foreign Key
Make sure that foreign key datatype is the same as its referencing column
Follow the dataType to resolve these issues.
public function up(){
Schema::create('posts', function (Blueprint $table) {
$table->bigIncrements('id');
$table->string('body');
$table->unsignedBigInteger('user_id');
$table->timestamps();
$table->foreign('user_id')
->references('id')
->on('users')
->onDelete('cascade');
});
}
Noticed the local column ('id') was set to bigIncrements('id') and the foreign was set to Unsigned big integer.
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