# Action Controller Log Subscriber

```ruby
deep_munge

halted_callback

process_action

redirect_to

send_data
send_file

start_processing

unpermitted_parameters


# 以下几个方法使用了元编程来定义，API 里是看不到的

read_fragment
write_fragment
expire_fragment

exist_fragment?

write_page
expire_page
```

除上述方法外，还有：

```
logger
```
