Module: Attendable::ActsAsAttendable::ClassMethods

Defined in:
lib/attendable/acts_as_attendable.rb

Instance Method Summary collapse

Instance Method Details

#acts_as_attendable(name, options = {}) ⇒ Object 



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# File 'lib/attendable/acts_as_attendable.rb', line 12

def acts_as_attendable(name, options = {})
  
  class_name = options[:class_name] || name.to_s.classify 
  attendee_class_name = options[:by].present? ? options[:by].to_s.classify : "User"
  table_name = class_name.tableize
  has_many name, as: :attendable, dependent: :destroy, class_name: class_name
  has_many :attendees, conditions: "#{table_name}.rsvp_status = 'attending'", through: name, source: :invitable, source_type: attendee_class_name
  clazz = class_name.constantize
  
  # instance methods 
  define_method "is_member?" do |user| 
    puts 'is member? ' + user.to_s
    puts 'clazz: ' + clazz.to_s
    clazz.where(invitable: user, attendable: self).count > 0 if !user.nil?
  end

  define_method "is_invited?" do |user| 
    clazz.where(invitable: user, attendable: self).count > 0 if !user.nil?
  end
  
  define_method "is_attending?" do |user| 
    clazz.where(invitable: user, attendable: self, rsvp_status: 'attending').count > 0 if !user.nil?
  end
  
  define_method "has_declined?" do |user| 
    clazz.where(invitable: user, attendable: self, rsvp_status: 'declined').count > 0 if !user.nil?
  end
  
  define_method "invite" do |user| 
    if user.is_a?(String)
      invitation_key = user
      is_invited = clazz.where(invitation_key: invitation_key, attendable: self).count > 0
      if !is_invited
        return clazz.create(attendable: self, invitation_key: invitation_key, rsvp_status: 'pending')
      end
    elsif !is_member?(user)
      clazz.create(attendable: self, invitation_key: invitation_key, rsvp_status: 'pending')
    end
  end
  
  define_method "accept_invitation" do |invitation_token, invitable| 
    if (invitation_token && invitable)
      if !is_member?(invitable)
        # only process invitation token if invitable is not already set
        token_member = clazz.where(invitation_token: invitation_token, attendable: self)[0]
        if token_member
          if token_member.invitable.nil?
            # create member invitable
            token_member.invitable = invitable
            if !token_member.save
              # error while saving
            end
          elsif token_member.invitable != invitable
            # member's invitable is not the current invitable
            return nil
          end
          return token_member
        end
      else
        # if a member for invitable already exists, return the current invitable's member
        token_member = clazz.where(invitable: invitable).first
        return token_member
      end
    end
  end
end