Phoenix.MissingParamError exception
Raised when a key is expected to be present in the request parameters, but is not.
This exception is raised by Phoenix.Controller.scrub_params/2 which:
- Checks to see if the required_key is present (can be empty)
- Changes all empty parameters to nils (“” -> nil).
If you are seeing this error, you should handle the error and surface it to the end user. It means that there is a parameter missing from the request.
Summary↑
| exception(args) | Callback implementation of |
| message(exception) | Callback implementation of |
Functions
Specs:
- exception(Keyword.t) :: Exception.t
Callback implementation of Exception.exception/1.
Specs:
- message(Exception.t) :: String.t
Callback implementation of Exception.message/1.