选用实践课程的搜索

6 years ago · 486ae178a3
parent a7833fa720
commit 486ae178a3
1 changed files with 2 additions and 1 deletions
--- a/app/controllers/subjects_controller.rb
+++ b/app/controllers/subjects_controller.rb
@ -69,7 +69,8 @@ class SubjectsController < ApplicationController
    else
      @subjects = @subjects[offset, limit]
      subject_ids = @subjects.pluck(:id)
-      @subjects = Subject.where(id: subject_ids).order("field(id,#{subject_ids.join(',')})").includes(:shixuns, :repertoire)
+      order_ids = subject_ids.size > 0 ? subject_ids.join(',') : -1
+      @subjects = Subject.where(id: subject_ids).order("field(id,#{order_ids})").includes(:shixuns, :repertoire)
    end
  end