强制 django-autocomplete=light 到 return 'best' 首先匹配

Question

我有一长串要使用 django-autocomplete-light 字段搜索的项目，自动完成定义如下：

class OccupationAutocomplete(autocomplete_light.AutocompleteModelBase):
    model = models.Occupation
    search_fields=['title',]

有些职位在列表中按字母顺序排列很远，例如：

"teacher"

在其他 'less ideal titles' 之后，例如：

"Agricultural teacher", "Architecture teacher", "Building teacher", etc...

我想要的是 "best" 匹配，最接近或仅以搜索文本开头的匹配，因此如果有人搜索 "teach"，他们会得到 "teacher", 因为它以相同的字母开头，然后是其他不太准确的匹配项。

我试过用首选顺序设置 search_fields

    search_fields=['^title','title',]

但对 autocomplete code 的分析表明，这些术语在返回之前都被合并到一个查询中。

我该如何以更合适的方式排序此列表？

Answer 1

最后我不得不实现一个新的 class，它只接受按 'preferred weight' 顺序排列的字典列表，然后 returns 基于它的结果。

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)

强制 django-autocomplete=light 到 return 'best' 首先匹配

Force django-autocomplete=light to return 'best' matches first

python

django

django-autocomplete-light