Laravel一般错误:1005无法创建表

时间:2019-07-03 17:19:47

标签: php laravel foreign-keys migration laravel-migrations

当我进行php artisan迁移时出现此错误。我的迁移文件有问题吗?

  

Illuminate \ Database \ QueryException:SQLSTATE [HY000]:常规错误:   1005无法创建表testblog_posts(错误号:150“外键   约束的格式不正确”)(SQL:alter table blog_posts add   约束blog_pos ts_user_id_foreign外键(user_id)   引用usersid))

博客文章

        $table->increments('id');
        $table->integer('cаtegory_id')->unsigned();
        $table->integer('user_id')->unsigned();
        $table->string('slug')->unique();
        $table->string('title');
        $table->text('excerpt')->nullable(); դաշտ չի
        $table->text('content_raw');
        $table->text('content_html');
        $table->boolean('is_published')->default(false);
        $table->timestamp('published_at')->nullable();
        $table->timestamps();
        $table->softDeletes(); 
        $table->foreign('user_id')->references('id')->on('users');
        $table->foreign('cаtegory_id')->references('id')->on('blog_categories');
        $table->index('is_published');

博客类别

    $table->increments('id');
    $table->integer('parent_id')->unsigned()->default(0); 
    $table->string('slug')->unique();
    $table->string('title');
    $table->text('description')->unllable(); 
    $table->timestamps(); 
    $table->softDeletes();

用户

        $table->bigIncrements('id');
        $table->string('name');
        $table->string('email')->unique();
        $table->timestamp('email_verified_at')->nullable();
        $table->string('password');
        $table->rememberToken();
        $table->timestamps();

1 个答案:

答案 0 :(得分:1)

您需要将用户表中的列类型和格式匹配到FK中。但是,您首先需要在blog_posts表上实际创建一列,从中绘制FK以使其完全匹配用户表上的内容

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

是FK指令,但是在此之前,您需要添加实际列以匹配users表。 Nullable是可选的,具体取决于您要如何进行:

$table->bigInteger('user_id')->unsigned()->nullable();