Laravel 6 - MariaDB 10.1：Illuminate\Database\

Question

我有自定义迁移：

代码：

// Groups migration

Schema::create('groups', function (Blueprint $table) {

    $table->bigIncrements('id');

    $table->string('name');

    $table->boolean('status')->default(false);

    $table->timestamps();

});

// Clients migration

Schema::create('clients', function (Blueprint $table) {

    $table->bigIncrements('id');

    $table->string('fullname');

    $table->integer('phone');

    $table->date('birthday')->nullable();

    $table->boolean('can_get_congratulations')->default(false);

    $table->unsignedInteger('group_id')->default(null);

    $table->foreign('group_id')

          ->references('id')

          ->on('groups')

          ->onDelete('cascade');

    $table->boolean('status')->default(true);

    $table->timestamps();

});

当我运行此迁移文件时，会收到错误消息：

Illuminate\Database\QueryException : SQLSTATE[HY000]: General error: 1005 Can't create table taxisms。#sql-1cc0_65c(errno: 150 "Foreign key constraint is wrongly forms") (SQL: alter table clientsadd constraint clients_group_id_foreignforeign key ( group_id) references groups( id) on delete cascade)

我的迁移代码哪里有错误？

Answer 1

该列需要在两侧匹配。由于groups.id是无符号大整数，因此 group_id 也需要。改变$table->unsignedInteger('group_id')到$table->unsignedBigInteger('group_id')