我想使用 [ORDER BY CONVERT (name USING gbk) ASC] 进行查询，以便管理员更改/添加表单中的 foreignkey 列表可以按以下方式排序汉语拼音，可能吗？
数据库:mysql，
示例类如下(表commoninfo的字符集:utf8_general_ci):
class CommonInfo(models.Model):
name = models.CharField(max_length=128)
def __str__(self):
return self.name
class Personal(CommonInfo):
first_name = models.CharField(max_length=128,null=True, blank=True, default = None)
last_name = models.CharField(max_length=128,null=True, blank=True, default = None)
class Profile(models.Model):
personal_info = models.ForeignKey(Personal, null=True, blank=True, default = None)
mobile = models.CharField(max_length=32,default='',null=True, blank=True)
我在 ProfileAdmin 中尝试了以下 2 种方法，但都不起作用
def formfield_for_foreignkey(self, db_field, request, **kwargs):
if db_field.name == "personal_info":
#raw_sql = 'SELECT id as commoninfo_ptr_id, name FROM share_commoninfo ORDER BY CONVERT (name USING gbk) ASC'
#raw_querySet = Personal.objects.raw(raw_sql)
#kwargs["queryset"] = raw_querySet
querySet = Personal.objects.extra(order_by=['CONVERT (name USING gbk)'])
kwargs["queryset"] = querySet
return super(ProfileAdmin, self).formfield_for_foreignkey(db_field, request, **kwargs)
admin.site.register(models.Profile, ProfileAdmin)
FieldError: Cannot resolve keyword 'CONVERT (name USING gbk)' into field. Choices are: commoninfo_ptr, commoninfo_ptr_id, first_name, id, last_name, name, profile, Check fields/fieldsets/exclude attributes of class ProfileAdmin.
最佳答案
from django.db.models import Func, Value
class Convert(Func):
def __init__(self, expression, transcoding_name, **extra):
super(Convert, self).__init__(
expression, transcoding_name=Value(transcoding_name), **extra)
def as_mysql(self, compiler, connection):
self.function = 'CONVERT'
self.template = '%(function)s(%(expressions)s AS %(transcoding_name)s)'
return super(Conver, self).as_sql(compiler, connection)
用法:
queryset.order_by(Convert('name', 'gbk').asc())
文档:
关于mysql - Django，如何使用 [ORDER BY CONVERT (name USING gbk) ASC] 进行查询，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38517743/