一、create
$article = new Model_Article();
// 或
$article = Model_Article::forge(); // 保存数据,返回新增数据 id
$article->save();
// 有时不方便设置自增 id,可手动添加
// 添加 properties
$article = Model_Article::forge();
$article->id = 'ha123';
$article->title = 'testtitle';
$article->save(); //或
$properity = array('id' => 'ha123', 'title' => 'testtitle');
$article = Model_Article::forge($properity);
$article->save();
// 框架封装的方法不一定满足,可以用 DB 类
$query = DB::insert('table_name', array('id', 'name')); $res = DB::query(sql)->bind()->execute();
二、update
// 编辑 id=3 的数据
$article = Model_Article::find(3);
// 设置数据
$article->title = 'edit_title';
$article->author = 'test';
// 执行 update
$article->save(); //或
$article = Model_Article::find(3);
$article->set(array('title' => 'edit_title', 'author' => 'test'));
$article->save();
$res = DB::update('table_name')->set(array())->execute(); $res = DB::query(sql)->bind()->execute();
三、delete
// 删除 id=3 的数据
$article = Model_Aricle::find(3);
$article->delete();
$res = DB::delete('table_name')->where()->execute(); $res = DB::query("sql")->bind()->execute();
四、read
// 根据 id 查
$article = Model_Article::find(2);
$article = Model_Article::find(array(2, 'foo')); // find first/last
$entry = Model_Article::find('first');
$entry = Model_Article::find('last', array('order_by' => 'date')); // find all
$entry = Model_Article::find('all');
$entry = Model_Article::find('all', array(
'where' => array(
array('category_id', 1),
),
'order_by' => array('date' => 'desc'),
));
$entry = Model_Article::find('all', array(
'where' => array(
array('category_id', 1),
'or' => array(
array('category_id', 2),
),
),
));
$user = DB::select('id', 'name')->from('users')->where('id', 1)->execute(); $user = DB::select_array(array('id', 'name'))->execute(); $user = DB::query("sql")->bind()->execute();
五、其他
1、sql 绑定变量:
$title = ’iat001’;
//绑定变量
$result = DB::query("SELECT * FROM articles WHERE title = :title")->bind(’title’, $title)->execute();
//直接赋值
$result = DB::query("SELECT * FROM articles WHERE title = :title")->param(’title’, ’iat001’)->execute();
//绑定多个参数
$result = DB::query("SELECT * FROM articles WHERE title = :title AND body = :body")->parameters(array(’title’ => $title, ’body’ => ’body001’))->execute();
2、数据 cache
//cached() 三个参数:缓存时间、缓存文件、是否存空值
$result = DB::query("SELECT * FROM articles")->cached(3600, "articles", false)->execute();
// 删除 articles 缓存文件
Cache::delete("articles");
// 删除 db 目录下的所有缓存
Cache::delete_all("db");
3、事务
try {
//事务开始
DB::start_transaction();
$result = DB::insert(’articles’)->set(array(’title’ => ’iat001’, ’body’ => ’body001’))->execute();
// 自定义返回信息
DB::escape('ERROR:' . $msg);
// 事务结束
DB::commit_transaction();
} catch(Exception $e) {
// 事务回滚
DB::rollback_transaction();
// 回滚提示信息
$e->getMessage();
}
4、链式操作
// order_by
$query = Model_Article::query()->where('category_id', 1)->order_by('date', 'desc');
// count
$number_of_articles = $query->count();
// max
$number_of_articles = $query->max('id');
// min
$number_of_articles = $query->min('date');
// get_one
$newest_article = $query->get_one();
// limit
$all_articles = $query->limit(15)->get();
// to_array() 转换为数组
$entry = Model_Article::query()->where('id', '=', 8)->get_one()->to_array(true, true); $entry = Model_Article::query()->select('name', 'date')->get();