# Answer class

## Why do you need to use the Answer class?

We recommend using return when sending a message, but there are cases where this is impossible. For example, if you are using middleware, or you need to get response from the method, you need to use **Answer class**

## Get Answer class and use it

If you want to get the **Answer class** in the middleware, get it as the 2nd argument. But if you're in a handler, you can get the Answer class using the `@GetAnswer` parameter decorator

{% code title="app.contoller.ts" %}

```typescript
import { GetAnswer, Answer, OnCommand, Controller } from 'nestgram';
import { AppService } from './app.service';

@Controller()
export class AppController {
  constructor(private readonly appService?: AppService) {}

  @OnCommand('start')
  async start(@GetAnswer() answer: Answer): Promise<void> {
    await answer.send('First message');
    await answer.send('Second message');
  }
}
```

{% endcode %}

## More info about the Answer class

The **Answer class** is asynchronous. You can pass the **MessageSend class** as content to the **Answer class** too. If you're using the **Answer class**, you can return class-method too

{% code title="app.controller.ts" %}

```typescript
import { GetAnswer, Answer, OnCommand, Controller, MessageSend } from 'nestgram';
import { AppService } from './app.service';

@Controller()
export class AppController {
  constructor(private readonly appService?: AppService) {}

  @OnCommand('start')
  async start(@GetAnswer() answer: Answer): Promise<MessageSend> {
    await answer.send(new MessageSend('First message'));
    return new MessageSend('Second message');
  }
}
```

{% endcode %}

## Add answer class to context

If you often use the **Answer class**, you shouldn't use the `@GetAnswer` decorator in every handler. You can use the `@GetAnswerContext` property decorator in the controller and use it like `this.answer`

{% code title="app.controller.ts" %}

```typescript
import { Answer, Controller, GetAnswerContext, Keyboard, KeyboardTypes, MessageSend, OnCommand } from 'nestgram';
import { AppService } from './app.service';

@Controller()
export class AppController {
  @GetAnswerContext() answer: Answer;

  constructor(private readonly appService?: AppService) {}

  @OnCommand('start')
  async start() {
    await this.answer.send('Hello, world!');
    await this.answer.send(
      new MessageSend('How are you?'),
      new Keyboard(KeyboardTypes.underTheMessage)
        .btn('Fine!', 'fine'),
    )
  }
}
```

{% endcode %}

{% hint style="info" %}
You can read more about keyboard [here](https://degreetpro.gitbook.io/nestgram/keyboards/keyboard-types-building-keyboard)
{% endhint %}