是否可以使用关键字定义一个参数，该参数将所有后续参数都放入Ruby中的数组中？

Question

I know what * and ** do when defining a method, but I want to know if I can do this:

some_method("Hi", params: 1, 2, 3)

And have a definition like this:

def some_method(param, my_hash)
  p param # "Hi"
  p my_hash # { params: [ 1, 2, 3 ] }
end

The problem itself is a clear syntax for writing a answer_question method in a Student . You would call like this: @student.answer_question question_obj, with: answer_instance, another_answer_instance

Update:

This is what i'm trying to do:

Question has_many Answer
Student has_many Answer through StudentAnswer
Answer has_many Student through StudentAnswer

I save which answers a student chose during a survey in StudentAnswer (I need an extra model to copy the answer text to studentanswer, to keep it saved if the answer text changes over time).

Then, my syntax actually is

some_student.answer_question question, with: [answer1, answer2]

And I want to make it more clear.

Answer 1

def some_method(param, my_hash = {})
  p param
  p my_hash
end

some_method('Hi', params: [1, 2, 3])
#=> "Hi"
#=> {:params=>[1, 2, 3]}

You can not omit the [] and call the method as:

some_method("Hi", params: 1, 2, 3)

It will cause you a syntax error, because params: 1 is not a valid Ruby object (it is a syntax sugar, that you can pass a hash as a last argument omitting the {} ).