Question

我开始使用Laravel进行一个小项目，我想创建客户端组织表，就像一个用户可以拥有一个或多个组织一样。

但是运行迁移命令后，我收到一条错误消息：

public function up()
{
    Schema::create('client_organizations', function (Blueprint $table) {
        $table->bigIncrements('id');

        $table->integer('user_id')->unsigned();
        $table->foreign('user_id')->references('id')->on('users');

        $table->integer('organization_id');
        $table->foreign('organization_id')->references('id')->on('organizations');

        $table->timestamps();

    });
}

组织表：

public function up()
{
    Schema::create('organizations', function (Blueprint $table) {
        $table->bigIncrements('id');
        
        $table->integer('user_id')->unsigned();
        $table->foreign('user_id')->references('id')->on('users');

        $table->string('organization_name');
        $table->string('phone');
        $table->string('fax');
        $table->string('address');
        $table->string('city');
        $table->string('zipcode');
        $table->string('website');
        $table->string('linkedin');
        $table->string('facebook');
        $table->string('twitter');
        $table->timestamps();

    });
}

我得到的错误：

SQLSTATE[HY000]: General error: 1005 Can't create table `cms`.`client_organi  
zations` (errno: 150 "Foreign key constraint is incorrectly formed")

Answer 1

client_organizations属于organizations，所以您需要先创建organizations表，然后再创建client_organizations。

Laravel 5.8添加了bigInteger作为外键的默认值。

组织

public function up()
{
    Schema::create('organizations', function (Blueprint $table) {
        $table->bigIncrements('id');
        
        $table->bigInteger('user_id')->unsigned();
        $table->foreign('user_id')->references('id')->on('users');

        $table->string('organization_name');
        $table->string('phone');
        $table->string('fax');
        $table->string('address');
        $table->string('city');
        $table->string('zipcode');
        $table->string('website');
        $table->string('linkedin');
        $table->string('facebook');
        $table->string('twitter');
        $table->timestamps();
    });
}

client_organizations

public function up()
{
    Schema::create('client_organizations', function (Blueprint $table) {
        $table->bigIncrements('id');

        $table->bigInteger('user_id')->unsigned();
        $table->foreign('user_id')->references('id')->on('users');

        $table->bigInteger('organization_id')->unsigned();
        $table->foreign('organization_id')->references('id')->on('organizations');
        $table->timestamps();
    });
}

运行迁移命令后出现Laravel迁移错误

1 个答案: