干草堆多字段搜索

嗨,我正在用干草堆作为搜索引擎：

我的模型如下

class Person(models.Model):
    personid = models.IntegerField(primary_key = True, db_column = 'PID')  
    firstname = models.CharField(max_length = 50, db_column = 'FIRSTNAME')  
    lastname = models.CharField(max_length = 50, db_column = 'LASTNAME') 
    class Meta:
        db_table = '"TEST"."PERSON"'
        managed = False


class TDoc(models.Model):
    tdocid = models.IntegerField(primary_key = True, db_column = 'TDOCID')  
    person = models.ForeignKey(Person, db_column = 'PID')
    content = models.TextField(db_column = 'CONTENT', blank = True) 
    filepath = models.TextField(db_column = 'FILEPATH', blank = True) 
    class Meta:
        db_table = '"TEST"."TDOC"'
        managed = False

search_index.py如下：

class TDocIndex(SearchIndex):

    content = CharField(model_attr = 'content', document = True)
    filepaht = CharField(model_attr = 'filepath')
    person = CharField(model_attr = 'person')

    def get_queryset(self):
        return TDoc.objects.all()

    def prepare_person(self, obj):
        # Store a list of id's for filtering
        return obj.person.lastname

site.register(TDoc, TDocIndex)

我的问题是我想进行多个归档搜索,例如

content:xxx AND person:SMITH

在干草堆上,它无法一次进行所有字段搜索,而我无法进行特定的字段搜索.
我怀疑我的索引已损坏,但是：

ix = open_dir("/testindex")

searcher = ix.searcher()

mparser = MultifieldParser(["content", "filepath", "person"], schema = ix.schema)
myquery = mparser.parse(content:xxx AND person:SMITH')
results = searcher.search(myquery)
for result in results:
    print result

但它可以正常工作并返回正确的值.
我正在使用本教程中的标准haystack SearchView,search.html

(r'^search/', include('haystack.urls')),

解决方法:

在索引中,您应该使用document = True定义一个字段,这是干草堆将在其中搜索的文档.按照惯例,该字段称为文本.如果计划对它们的值进行过滤或排序,则可以添加其他字段.

执行搜索时考虑多个字段的方法是将文档定义为模板,并在文档字段上设置use_template.您的索引如下所示：

class TDocIndex(SearchIndex):

    text = CharField(document=True, use_template=True)

    #if you plan to filter by person
    personid = IntegerField(model_attr='person__id') 

site.register(TDoc, TDocIndex)

您将拥有一个search / indexes / tdoc_text.txt模板,例如：

{{ object.content }}
{{ object.filepath }}
{{ object.person.lastname }}

参见this答案.

标签：whoosh,search,python,django-haystack
来源： https://codeday.me/bug/20191105/1998477.html