小编use*_*234的帖子

我试图运行yii migrate,但它显示以下错误:

create table news-cate ...Exception: SQLSTATE[42000]: Syntax error or access violation: 1075 Incorrect table definition; there can be only one auto column and it must be defined as a key
The SQL being executed was: CREATE TABLE `news-cate` (
        `news-id` int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
        `cate-id` int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY

这是我的代码:

class m150821_083020_create_newscate_table extends Migration
{
    public function safeUp()
    {
        $this->createTable('news-cate', [
            'news-id' => $this->primaryKey(),
            'cate-id' => $this->primaryKey(),
        ]);
        $this->addForeignKey("fk_news_cate_nid", "news-cate", "news-id", "news", "id", …

我正在使用Yii2的基本包.我创建了一个名为Admin的模块,我希望这个模块有自己的布局.但我不知道在哪里放置所有的CSS文件.然后,如何将它们包含在layout.php中.

我的目录结构:

basic
-- module
  -- admin
    -- controllers
       -- DefaultController.php
    -- views
       -- default
       -- layouts
          -- main.php
          -- css
             -- style.css

在main.php中,我使用此代码,但它不起作用:

<?php $this->registerLinkTag([
    'rel'  => 'stylesheet',
    'href' => 'css/style.css',
]);
$this->head(); ?>