Laravel General error: 1005 Can't create table

Question

我在执行 php artisan 迁移时收到此错误。我的迁移文件有问题吗？

Illuminate\Database\QueryException : SQLSTATE[HY000]: General error: 1005 Can't create table test.blog_posts (errno: 150 "Foreign key constraint is incorrectly formed") (SQL: alter table blog_posts add constraint blog_pos ts_user_id_foreign foreign key (user_id) references users (id))

blog_posts

        $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');

blog_categories

    $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();

Answer 1

您需要将来自用户 table 的列类型和格式匹配到 FK 中。但是您首先需要实际创建 blog_posts table 上的列，从中绘制 FK 以 与用户 table[=18= 完全匹配]:

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

是FK指令，但在此之前，需要添加实际的列来匹配用户table。 Nullable 是可选的，具体取决于您要如何进行：

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

Laravel General error: 1005 Can't create table

Laravel General error: 1005 Can't create table

php

migration

foreign-keys

laravel

laravel-migrations