不能用外键迁移表

Question

我正在我的应用程序中创建一些迁移，但出现以下错误：

"General error: 1005 Can't create table+ "外键约束格式不正确")+laravel".

找不到我的迁移问题。

Schema::create('articles', function (Blueprint $table) {
    $table->increments('id');
    $table->boolean('online');
    $table->timestamps();
});

Schema::create('article_translations', function (Blueprint $table) {
    $table->increments('id');
    $table->integer('article_id')->unsigned();
    $table->string('locale')->index();

    $table->string('name');
    $table->text('text');

    $table->unique(['article_id','locale']);
    $table->foreign('article_id')->references('id')->on('articles')->onDelete('cascade');
});

Answer 1

不如单独试试。像这样

Schema::table('article_translations', function($table) 
{     
    $table->foreign('article_id')->references('id')->on('articles')->onDelete('cascade');
});