init project

app/models/team_member.rb

@@ -0,0 +1,18 @@
+class TeamMember < ApplicationRecord
+  belongs_to :user
+
+  scope :only_teachers, -> { where(is_teacher: true) }
+  scope :without_teachers, -> { where(is_teacher: false) }
+
+  def creator?
+    role == 1
+  end
+
+  def en_role
+    is_teacher? ? 'teacher' : 'member'
+  end
+
+  def user_name
+    user&.real_name
+  end
+end