Problems with thinkphp operating mongodb

The mongodbdatabase connection has been configured in the framework. How to implement the CURD operation? The following is my operation

<code>$model = M('category');
// $model = D('category');

/** 查询 */
$result = $model->where($where)->select();</code>

My idea is that the method that comes with the framework can be operated in the same way as mysql, but I found that this does not work, and it always says that there is a problem with the instantiation of my M method. But category does exist in my mongodb. Solve

mongodbdatabase connection has been configured in the framework. How to implement the CURD operation? The following is my operation

<code>$model = M('category');
// $model = D('category');

/** 查询 */
$result = $model->where($where)->select();</code>

mysql, but I found that this does not work, and it always says that there is a problem with the instantiation of my M method. But category does exist in my mongodb. Solve

M

method. I forgot the specific error and it may be different from yours. I used the D method and the operation mysql and there was no problem, but using D You need to pay attention to the method. Just define the corresponding class in the model file. For example <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false">&lt;code&gt;&lt;?php /** * Description: MongoDB操作 * Author: yangxiangming@live.com * Date: 2015/9/9 * Time: 13:35 */ namespace Bbsapi\Model; use Think\Model\MongoModel; class ExampleModel extends MongoModel { }&lt;/code&gt;</pre><div class="contentsignin">Copy after login</div></div> The calling operation is as follows

<code><?php
/**
 * Description: MongoDB操作
 * Author: yangxiangming@live.com
 * Date: 2015/9/9
 * Time: 13:51
 */

namespace \Controller;
use Think\Model\ExampleModel;
class ExampleController extends ExampleModel{

    public function example(){
        $where['_id'] = '54dd9116e4b061818991ac7d';
        $model = D('Example');

        /** 查询 */
        $result = $model->where($where)->select();

        /** 添加 */
        $data['name'] = 'Example';
        ……
        $model->add($data);

        /** 更新 */
        $data['name'] = 'ExampleTmp';
        ……
        $model->where($where)->save($data);

        /** 删除 */
        $model->where($where)->delete();
    }
}</code>

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