Class 'think\mongo\Db' not found
时间: 2023-07-21 19:00:35 浏览: 43
I for the confusion. In ThinkPHP 6, the `thinkmongo\Db` class is not available by default. However you can use the `think\Mongo` class to interact with MongoDB. Here an example of how you can perform queries using MongoDB in ThinkPHP 6:
1. Query all records:
```php
use think\Mongo;
$users = Mongo::name('user')->select();
```
2. Condition query:
```php
use think\Mongo;
$user = Mongo::name('user')->where('age', '>', 18)->find();
```
3. Multiple condition query:
```php
use think\Mongo;
$users = Mongo::name('user')
->where('age', '>', 18)
->where('gender', 'male')
->select();
```
4. Sorting query:
```php
use think\Mongo;
$users = Mongo::name('user')->order('age', 'desc')->select();
```
5. Pagination query:
```php
use think\Mongo;
$users = Mongo::name('user')->page(1, 10)->select();
```
6. Specifying fields to retrieve:
```php
use think\Mongo;
$users = Mongo::name('user')->field('name,age')->select();
```
Please make sure you have the `topthink/think-mongo` package installed and properly configured in your `composer.json` file, and run `composer update` to install the package dependencies. Additionally, ensure that you have the correct namespace and class name in your code.