Question

I have a model Client which has many :tours, association in it. I am using this code to provide all the clients with their tours,

render :json => Client.all(:include => :tours)

Now, the requirement has changed such that this object representation loads only tours of a user. Each tour is associated with an user with relation User has many :tours. I tried

render :json => Client.all(:include => :tours, :conditions => ["tours.user_id = ?", params[:user_id]])

This gives me the clients having tours of that user, but lists all the tours of these clients. But, I want only tours of that user only to be listed under each client. Can I do that using :includes?

client.rb

has_many :tours, :dependent => :destroy

user.rb

has_may :tours, :dependent => :destroy

Update

I thought it would be better to add an example to explain my problem. Suppose, there are 3 clients A, B, C.

• Client A has 3 tours (all of user user1)
• Client B has 4 tours (none of user user1)
• Client C has 3 tours (1 of user user1, others of other users)

Now if we use my method to get the response for user1, it will be like this:

[
  {
    "name": "Client A",
    ....
    "tours": [
      {
        "name": "Tour1",
        ....
      },
      {
        "name": "Tour2",
        ......
      },
      {
        "name": "Tour3",
        .....
      }
    ]
  },
  {
    "name": "Client C",
    ....
    "tours": [
      {
        "name": "Tour4",
        ...
      },
      {
        "name": "Tour5",
        ...
      },
      {
        "name": "Tour6",
        ...
      }
    ]
  }
] 

You can see that Client B has been omitted, and Client A and Client C has been included, which is correct. But, for Client C, only Tour5 belongs to user user1. But, it has all its tours included. I want my response to omit Tour5 and Tour6, like this:

[
  {
    "name": "Client A",
    ....
    "tours": [
      {
        "name": "Tour1",
        ....
      },
      {
        "name": "Tour2",
        ......
      },
      {
        "name": "Tour3",
        .....
      }
    ]
  },
  {
    "name": "Client C",
    ....
    "tours": [
      {
        "name": "Tour4",
        ...
      }
    ]
  }
]    

Answer 1

I’m only guessing but have you tried something along the lines of:

render :json => Client.all(:include => {:tours => :user}, :conditions => ["users.id = ?", params[:user_id]])