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问题描述

我添加了标签= TaggableManager(blank = True)给我的模型,但我希望我的标签不区分大小写。
我看到一些这样的工作片段,想问是否有一个简单的方法呢?
如果我必须从TaggableManager中重写一些方法,请告知我该怎么做?



提前感谢
Arshavski Alexander。 / p>

解决方案

我已经使用出现类似的问题。代码副本(转载为后代):

  from django.db.models import manager 
from django。 db.models.query import QuerySet

class CaseInsensitiveQuerySet(QuerySet):
def _filter_or_exclude(self,mapper,* args,** kwargs):
#'name'是一个您的模型中的字段,您希望不区分大小写的搜索
如果kwargs中的name:
kwargs ['name__iexact'] = kwargs ['name']
del kwargs ['name ']
return super(CaseInsensitiveQuerySet,self)._ filter_or_exclude(mapper,* args,** kwargs)

#覆盖初始查询集的自定义管理器
class TagManager(Manager )
def get_query_set(self):
返回CaseInsensitiveQuerySet(self.model)

#和模型本身
class Tag(models.Model):
name = models.CharField(maxlength = 50,unique = True,db_index = True)

objects = TagManager()

def __str __(self):
return self.name
#now ...
>>> tag = Tag(name ='test')
>>> tag.save()
>>> Tag.objects.get(name ='TEST')
<标签:test>

基本上,您将覆盖初始查询集,以便所有查询器都会考虑不区分大小写的情况。

I added tags = TaggableManager(blank=True) to my models, but I want my tags to be case-insensitive.I saw some snippets of work arounds for this and wanted to ask if there is an easy way to do it?If I have to override some methods from the TaggableManager, please advise how can I do that?

Thanks in advance,Arshavski Alexander.

解决方案

I have used this snippet for a similar issue. A copy of the code (reprinted for posterity):

from django.db.models import Manager
from django.db.models.query import QuerySet

class CaseInsensitiveQuerySet(QuerySet):
    def _filter_or_exclude(self, mapper, *args, **kwargs):
        # 'name' is a field in your Model whose lookups you want case-insensitive by default
        if 'name' in kwargs:
            kwargs['name__iexact'] = kwargs['name']
            del kwargs['name']
        return super(CaseInsensitiveQuerySet, self)._filter_or_exclude(mapper, *args, **kwargs)

# custom manager that overrides the initial query set
class TagManager(Manager):
    def get_query_set(self):
        return CaseInsensitiveQuerySet(self.model)

# and the model itself
class Tag(models.Model):
    name = models.CharField(maxlength=50, unique=True, db_index=True)

    objects = TagManager()

    def __str__(self):
        return self.name
# now...
>>> tag = Tag(name='test')
>>> tag.save()
>>> Tag.objects.get(name='TEST')
<Tag: test>

Basically, you override the initial queryset so that all querysets take case insensitivity into account.

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08-19 08:48