课程学生model

app/api/mobile/entities/member.rb

@@ -0,0 +1,33 @@
+module Mobile
+  module Entities
+    class Member < Grape::Entity
+      include ApplicationHelper
+      include ApiHelper
+      def self.member_expose(f)
+        expose f do |u,opt|
+          if u.is_a?(Hash) && u.key?(f)
+            u[f]
+          elsif u.is_a?(::Member)
+            if u.respond_to?(f)
+              u.send(f)
+            else
+              case f
+               when :student_id
+                u.user.user_extensions.student_id
+              end
+            end
+          end
+
+        end
+      end
+
+      expose :user, using: Mobile::Entities::User do |c, opt|
+        if c.is_a?(::Member)
+          c.user
+        end
+      end
+      member_expose :student_id
+      member_expose :score
+    end
+  end
+end