issues#623

app/controllers/school_controller.rb

@@ -46,15 +46,17 @@ class SchoolController < ApplicationController
     @provinces.each do |p|
       options << "<option value = '#{p.province}' >#{p.province}</option>"
     end
-    @school = School.all
-    
-    
+
+    # 查询已添加用户的学校
+    schools_arr = UserExtensions.where("school_id IS NOT NULL").pluck(:school_id).uniq
+    # 取id取学校名
+    school = School.where(id: schools_arr).select("id, name")
+
     options_s = ""
-    
-    @school.each do |s|
-      #options << "<option value=#{s.id}>#{s.name}</option>"
+    school.each do |s|
       options_s << "<li style = 'width: 33%; float: left'><a id=#{s.id} onclick='test(this.id, this.text)'>#{s.name}</a></li>"
     end
+
     res = Hash.new
     res[:text] = options
     res[:text_s] = options_s