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app/controllers/subjects_controller.rb

@@ -161,7 +161,7 @@ class SubjectsController < ApplicationController
     end
 
     @shixuns = @shixuns.reorder("created_at desc")
-    @shixuns_count = @shixuns.count
+    @shixuns_count = @shixuns.size
 
     ## 分页参数
     page  = params[:page] || 1