使模型访问Rails中的params哈希的最佳方法是什么？

Question

This appears to be a violation of MVC, so I'll explain what I am trying to do:

My model makes a call to an API, and the URI of the API depends on the params hash. (The params hash stores the URL of the Rails app).

I created a module to mix into the model (because the model has nothing to do with the API call), but haven't figured out how to get the params into the module.

If possible, I would like to initialize the module with the params hash, but don't know where to do it. before_create on the model would work, but that is in the model.rb file which doesn't know about the params.

Answer 1

Couple ideas, depending on your needs:

Pass the parameters to the model with each call, if they change that much. You could do a class method or instance method -

Model.api_call params[:field]
@model.api_call params[:field]

Save the parameters as class variables in the model:

Model.set_parameters(params)

def self.set_parameters(params)
  @@params = params
end

# access it in methods with @@params