具有字段名称值的Django ManyToMany字段

Question

model.py

class MedtechProductCategory(models.Model):
name = models.CharField(max_length=128, null=False, blank=False)
type = models.CharField(choices=type_choices_for_tag, max_length=512)

class Meta:
    db_table = 'medtech_product_category'

class ProductsInfo(models.Model):
deal_active = models.BooleanField(default=True)
category = models.ManyToManyField(MedtechProductCategory,  related_name='product_info_category')

class Meta:
    db_table = 'products_info'

def getTags(self):
    return self.category.values_list()

admin.py

class ProductsInfoAdmin(admin.ModelAdmin):
filter_horizontal = ('category',)
admin.site.register(ProductsInfo, ProductsInfoAdmin)

所以我想在过滤搜索中显示类别字段的名称,并希望在进行保存时将它们保存为对象.

如何自定义它以显示manytomany字段的名称,并在保存时保存manytomany字段的对象

Answer 1

__unicode__向模型添加一个方法,该方法将返回您要使用的字符串.

对于python 3,请__str__改用.

# on ProductsInfo model
def __str__(self):
    return self.category.name