How to make private activities?

Question

How can we give the user the option to make activities private? This would give users privacy for posts they want for their eyes only.

Here was one of my attempts, which

Answer 1

class User < ActiveRecord::Base
  has_many :activities
  def public_activities
    activities.find(&:public?)
  end
end

This has defined a new instance method called public_activities - you will only be able to use it on an instance of a user

class ActivitiesController < ApplicationController
  def index #Added .public_activities
    @activities = Activity.public_activities.order("created_at desc").where(current_user.following_ids)
  end
end

Here you are trying to call a class method on the Activity class instead.

If you want to do the above, then you'll need to create a scope on the Activity class.

in which case, it's better not to repeat the "activities" part in the name, but just call it "public"

eg

class Activity < ActiveRecord::Base
  belongs_to :user
  has_many :comments, as: :commentable
  belongs_to :trackable, polymorphic: true

  scope :public, ->{ where(:private => false) }

  def public?
    private == true ? false : true
  end
end


class ActivitiesController < ApplicationController
  def index
    @activities = Activity.public.order("created_at desc").where(current_user.following_ids)
  end
end