项目issue。里程碑为空，完成为100%的issue筛选不了

app/controllers/issues_controller.rb

@@ -284,11 +284,11 @@ class IssuesController < ApplicationController
 
   # 用户编辑更改issue
   def update
-  #  params[:assigned_to_id] = nil if params[:assigned_to_id].to_i == 0
+    # params[:assigned_to_id] = nil if params[:assigned_to_id].to_i == 0
+    # params[:fixed_version_id] = nil if params[:fixed_version_id].to_i == 0
     if params[:issue_detail]
       issue = Issue.find(params[:id])
       issue = update_user_issue_detail(issue, params)
-      @issue.assigned_to_id = nil if @issue.assigned_to_id == 0
       @saved = update_user_issue_detail(issue, params)
       return
     else
@@ -296,6 +296,7 @@ class IssuesController < ApplicationController
       return unless update_issue_from_params
       @issue.save_attachments(params[:attachments] || (params[:issue] && params[:issue][:uploads]))
       @issue.assigned_to_id = nil if @issue.assigned_to_id == 0
+      @issue.fixed_version_id = nil if @issue.fixed_version_id == 0
       saved = false
       begin
         @saved = @issue.save_issue_with_child_records(params, @time_entry)

db/migrate/20161121091826_modify_fixed_version_id.rb

@@ -0,0 +1,8 @@
+class ModifyFixedVersionId < ActiveRecord::Migration
+  def up
+    Issue.where(:fixed_version_id => 0).update_all(:fixed_version_id => nil)
+  end
+
+  def down
+  end
+end