Question

我已经创建了迁移文件，我写了：

public function up()
    {
        //
        Schema::create('ad_group', function (Blueprint $table) {
            $table->increments('id');
            $table->integer('campaign_id')->unsigned();
            $table->char('name',32);
        });
        Schema::table('ad_group',function (Blueprint $table){
            $table->foreign('campaign_id')->references->('id')->on('campaigns');
        });
    }

返回如下错误：

[Symfony的\元器件\调试\异常\ FatalThrowableError]
解析错误：语法错误，意外'（'，期望标识符（T_STRING）或变量（T_VARIABLE）或'{'或'$'

Answer 1

Your mistake is  "->references->('id')->" must be "->references('id')->"

public function up() {
    Schema::table('ad_group', function (Blueprint $table) {
          $table->foreign('campaign_id')->references('id')->on('campaigns');
    });
}

希望有所帮助：）

外键在laravel 5.4中显示语法错误

1 个答案: