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# 导入日志模块，用于记录日志信息
import logging
# 导入Django表单模块
from django import forms
# 从haystack.forms导入SearchForm，
from haystack . forms import SearchForm
# 创建日志记录器
logger = logging . getLogger ( __name__ )
# 定义博客搜索表单类，
class BlogSearchForm ( SearchForm ) :
# 定义搜索查询字段，设置为必填项
querydata = forms . CharField ( required = True )
# 重写search方法，
def search ( self ) :
# 调用父类的search方法获取搜索结果
datas = super ( BlogSearchForm , self ) . search ( )
# 检查表单数据是否有效
if not self . is_valid ( ) :
# 如果无效，返回无查询结果
return self . no_query_found ( )
# 如果查询数据存在
if self . cleaned_data [ ' querydata ' ] :
# 记录查询关键字到日志中
logger . info ( self . cleaned_data [ ' querydata ' ] )
# 返回搜索结果
return datas
