【发布时间】：2015-12-11 08:05:45
【问题描述】：
我从学生迁移到另一个迁移中删除了两个字段 middle_name、last_name 后，我面临以下错误。以下是错误。
StudentController#advanced_search 中的 Searchlogic::NamedScopes::OrConditions::UnknownConditionError
条件“姓氏”不是有效条件，我们找不到任何匹配的范围。
RAILS_ROOT: /root/ansipro342
Application Trace | Framework Trace | Full Trace
/root/ansipro342/vendor/plugins/searchlogic/lib/searchlogic/named_scopes/or_conditions.rb:96:in `interpolate_or_conditions'
/root/ansipro342/vendor/plugins/searchlogic/lib/searchlogic/named_scopes/or_conditions.rb:75:in `each'
/root/ansipro342/vendor/plugins/searchlogic/lib/searchlogic/named_scopes/or_conditions.rb:75:in `interpolate_or_conditions'
/root/ansipro342/vendor/plugins/searchlogic/lib/searchlogic/named_scopes/or_conditions.rb:36:in `or_conditions'
/root/ansipro342/vendor/plugins/searchlogic/lib/searchlogic/named_scopes/or_conditions.rb:19:in `or_condition?'
/root/ansipro342/vendor/plugins/searchlogic/lib/searchlogic/named_scopes/or_conditions.rb:10:in `condition?'
/root/ansipro342/vendor/plugins/searchlogic/lib/searchlogic/search/scopes.rb:10:in `scope?'
/root/ansipro342/vendor/plugins/searchlogic/lib/searchlogic/search/method_missing.rb:16:in `method_missing'
/root/ansipro342/vendor/plugins/searchlogic/lib/searchlogic/search/conditions.rb:19:in `send'
/root/ansipro342/vendor/plugins/searchlogic/lib/searchlogic/search/conditions.rb:19:in `conditions='
/root/ansipro342/vendor/plugins/searchlogic/lib/searchlogic/search/conditions.rb:15:in `each'
/root/ansipro342/vendor/plugins/searchlogic/lib/searchlogic/search/conditions.rb:15:in `conditions='
/root/ansipro342/vendor/plugins/searchlogic/lib/searchlogic/search/date_parts.rb:19:in `conditions='
/root/ansipro342/vendor/plugins/searchlogic/lib/searchlogic/search/base.rb:18:in `initialize'
/root/ansipro342/vendor/plugins/searchlogic/lib/searchlogic/search/implementation.rb:10:in `new'
/root/ansipro342/vendor/plugins/searchlogic/lib/searchlogic/search/implementation.rb:10:in `search'
/root/ansipro342/app/controllers/student_controller.rb:816:in `advanced_search'
请求
参数：
{"搜索"=>{"订单"=>"", "first_name_or_middle_name_or_last_name_or_admission_no_like"=>"Imran"}, “提交”=>“搜索”}
以下是学生控制器中存在第 816 行的代码区域
def advanced_search
@search = Student.search(params[:search])
unless params[:search].present?
@batches = Batch.all
else
if params[:search].present?
@students = Array.new
if params[:advv_search].present? and params[:advv_search][:course_id].present?
unless params[:search][:batch_id_equals].present?
params[:search][:batch_id_in] = Batch.find_all_by_course_id(params[:advv_search][:course_id]).collect{|b|b.id}
end
end
if params[:search][:is_active_equals]=="true"
@students = Student.ascend_by_first_name.search(params[:search]).paginate(:page => params[:page],:per_page => 30)
elsif params[:search][:is_active_equals]=="false"
@students = ArchivedStudent.ascend_by_first_name.search(params[:search]).paginate(:page => params[:page],:per_page => 30)
else
@students = [{:student => {:search_options => params[:search], :order => :first_name}},{:archived_student => {:search_options => params[:search], :order => :first_name}}].model_paginate(:page => params[:page],:per_page => 30)#.sort!{|m, n| m.first_name.capitalize <=> n.first_name.capitalize}
end
@searched_for = ''
@searched_for += "<span>#{t('name')}/#{t('admission_no')}: " + params[:search][:first_name_or_admission_no_like].to_s + "</span>" if params[:search][:first_name_or_admission_no_like].present?
@searched_for += "<span>#{t('name')}: " + params[:search][:first_name_like].to_s + "</span>" if params[:search][:first_name_like].present?
@searched_for += " <span>#{t('admission_no')}: " + params[:search][:admission_no_equals].to_s + "</span>" if params[:search][:admission_no_equals].present?
if params[:advv_search].present? and params[:advv_search][:course_id].present?
course = Course.find(params[:advv_search][:course_id])
batch = Batch.find(params[:search][:batch_id_equals]) unless (params[:search][:batch_id_equals]).blank?
@searched_for += "<span>#{t('course_text')}: " + course.full_name + "</span>"
@searched_for += "<span>#{t('batch')}: " + batch.full_name + "</span>" if batch.present?
end
请帮助我不知道 last_name 存在于哪里，它显示错误，我对 ruby on rails 很陌生，很需要这个。
提前致谢。
【问题讨论】：
-
您可以在终端中尝试
rake db:setup，我认为这会对您有所帮助。据我所知，这是您的迁移和数据库不匹配问题。 -
感谢您的回复，它给了我以下错误。耙中止！当你没想到时，你有一个 nil 对象！您可能期望 ActiveRecord::Base 的实例。评估 nil.update_attributes 时发生错误
-
将 Pry gem 'gem pry-rails' 安装到您的应用程序中。在第 816 行之前添加“binding.pry”并逐步执行代码。这将使您能够访问所有变量，例如自己调用方法。