Re: [Rails] Use of Super or how to get the calling object.

On 5 May 2012 23:39, Niklas Nson <niklasnson@me.com> wrote:

Class User 

has_many :settings, :class_name => "UserSetting", :foreign_key => "user_id"

Class UserSetting

belongs_to :user 

In UserSetting i have 

 class << self

   def set(name, value)

     setting = [here i need the calling user object].settings.find_or_initialize_by_name(name)

   end

 end 

I think there are two sensible options. Either passing the user into a class set method (so UserSetting.set(user, name, value)) or better, put a method on user. e.g.

class User

  has_many :settings, :class_name => "UserSetting", :foreign_key => "user_id"

  def set(name, value)

    setting = self.settings.find_or_initialize_by_name(name)

    #...
    setting.save

  end

end

Usage:

user = User.find(1)

user.set("test", "foobar")

On a side note, "set" strikes me as a dangerous method name. I don't think it's reserved, but it's not particularly descriptive, and might clash with other stuff in gems etc. Maybe update_setting() would be better?

Finally, you could maybe do:

Class UserSetting

  belongs_to :user 

  def self.set(name, value)

    setting = self.where(name: name).first

    setting = self.build unless setting

    #...
    setting.save

  end

end

Usage:

user = User.find(1)

user.settings.set(name, value)

However, I think that's a horrible solution because it's relying on the set method being called on an association rather than itself. However, it most closes resembles your initial code, so I've included it as a possible solution. You might be able to go further and make it more sensible, but I think a method on user is better.

Does any of that help?

Jeremy Walker

http://www.ihid.co.uk

what i want is to be abel to make a call like: 

user = User.find(1)

user.settings.set("test", "test")

Is this possible or am i just way off ? 

--
You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group.
To view this discussion on the web visit https://groups.google.com/d/msg/rubyonrails-talk/-/V8fTT3CSZkcJ.
To post to this group, send email to rubyonrails-talk@googlegroups.com.
To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.

--
You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group.
To post to this group, send email to rubyonrails-talk@googlegroups.com.
To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.