Help creating a model in Rails

class Profile
  has_many :projects, :through => "teamss"
  has_many :teams, :foreign_key => "member_id"
  has_many :own_projects, :class_name => "Project", :foreign_key => :profile_id
  has_many :own_teams, :through => :own_projects, :source => :teams
end

class Project
  belongs_to :profile, :class_name => "Profile"
  has_many :teams
  has_many :members, :class_name => "Profile", :through => "teams", :foreign_key => "member_id"
end

class Team
  belongs_to :member, :class_name => 'Profile'
  belongs_to :project
end

I need to create a model Evaluation. I want to create a link on the page project#viewfor each project participant, including the owner, to do Evaluation. The person clicks on the link and appreciates the person associated with this link. The owner Projectwill evaluate all participants, and all participants will evaluate the owner.

I defined the model Evaluationas follows, but I think something was missing:

class Evaluations < ActiveRecord::Base
  belongs_to :evaluated, :class_name => 'Profile', :foreign_key => "evaluated_id"
  belongs_to: :profile, :class_name => 'Profile', :foreign_key => "profile_id"
end

Remembering there Evaluationwill be a lot of attributes in the table , so I'm not going to go with has_many_and_belongs_to_many.

How can I create this model to do what I want and be able to do everything I need on the page project#show?

Thank!

Edited

Changes made:

class Profile
  has_many :evaluations, :dependent => :destroy, :foreign_key => :evaluation_id
  has_many :evaluators, :through => :evaluations, :foreign_key => :profile_id
end

class Project
  has_many :evaluations,:foreign_key => "project_id"
end

class Evaluations < ActiveRecord::Base
  belongs_to :evaluated, :class_name => 'Profile', :foreign_key => "evaluated_id"
  belongs_to: :profile, :class_name => 'Profile', :foreign_key => "profile_id"
  belongs_to: :project, :class_name => 'Project', :foreign_key => "project_id"
end