How to write update all conditionally queries in rails4

Question

I want rails queries similar to: ``` UPDATE users SET name="test" WHERE name="test1" ```

Accepted Answer

```
User.update_all({name: 'test'},{name: 'test1'}) # deprecated since Rails 4
```

or

```
User.where(name: 'test1').update_all(name: 'test')
```

Solution