使用URL_PARAMS查询Rails模型

Question

I am making Rails app and in my model I have Application model. Application model belongs to User, and it has user_id as an attribute in Application model. The route for getting all Applications is like below:

GET    /applications(.:format)      Controller#Action applications#index                                                      

When I issue get request to above route, I get back all Applications. Let's say there are two models:

Application 1:
{
user_id:1,
data:{}
}

Application 2:
{
user_id:2,
data:{}
}

I would want to just query Application2 using user_id: 2. I issues GET request using url_params like following way but it did not work.

localhost:3000/applications?user_id=2

Is this not the right way of doing it?

Answer 1

It usually helps a lot to post more of your actual code. If you post your models and existing index method code, I might be able to give you a more accurate response, but this should probably work based off my assumptions.

Find applications filtering based on the user_id using a where clause

class ApplicationsController < ApplicationController
  def index
    @applications = Application.where(user_id: params[:user_id])
    # Render your json response using whatever method you want. Jbuilder, rabl, to_json, etc
  end
end

Hope that helps, feel free to add more info and I'll edit