我使用django-autocomplete-light
字段搜索了一长串项目,其中自动填充定义如下:
class OccupationAutocomplete(autocomplete_light.AutocompleteModelBase):
model = models.Occupation
search_fields=['title',]
有些职位名称按字母顺序排列在列表中,例如:
“老师”
来自其他“不太理想的头衔”,如:
“农业教师”,“建筑教师”,“建筑老师”等......
我想要的是“最佳”匹配,无论是最接近还是仅匹配从搜索文本开始,所以如果有人搜索“教学”,他们会得到“老师”,因为它从同一个开始字母,然后是其他不太准确的匹配。
我尝试使用首选订单设置search_fields
search_fields=['^title','title',]
但对autocomplete code的分析表明,在返回之前,这些术语都被包含在一个查询中。
我如何以更合适的方式订购此列表?
答案 0 :(得分:0)
最后我不得不实施一个新课程,这只是按照“首选权重”的顺序接受一个字典列表。然后根据该结果返回结果。
class OrderedAutocomplete(autocomplete_light.AutocompleteModelBase):
ordered_search_fields = []
def choices_for_request(self):
"""
Return a queryset based on :py:attr:`choices` using options
:py:attr:`split_words`, :py:attr:`search_fields` and
:py:attr:`limit_choices`.
"""
assert self.choices is not None, 'choices should be a queryset'
q = self.request.GET.get('q', '')
exclude = self.request.GET.getlist('exclude')
base_split_words = self.split_words
_choices = []
for weight,opt in enumerate(self.ordered_search_fields):
if len(_choices) >= self.limit_choices:
break
search_fields = opt['search_fields']
self.split_words = opt['split_words'] or base_split_words
conditions = self._choices_for_request_conditions(q,
search_fields)
choices = self.order_choices(self.choices.filter(conditions).exclude(pk__in=exclude))
if choices.count():
_choices += list(choices)[0:self.limit_choices]
return _choices[0:self.limit_choices]
然后可以使用以下方法对其进行实例化。
class OccupationAutocomplete(OrderedAutocomplete):
model = models.Occupation
ordered_search_fields = [
{'search_fields': ['^title'], 'split_words':False},
{'search_fields': ['title'], 'split_words':True},
]
autocomplete_light.register(OccupationAutocomplete)