编辑分组作业的作品报500

app/controllers/student_work_controller.rb

@@ -299,7 +299,6 @@ class StudentWorkController < ApplicationController
       @submit_result = true
       @work.name = params[:student_work][:name]
       @work.description = params[:student_work][:description]
-      @work.project_id = params[:student_work][:project]
       @work.save_attachments(params[:attachments])
       render_attachment_warning_if_needed(@work)
       if @work.save