django-admin多对多
1. admin后台穿梭框(manytomany才可以使用)
class AssetAdmin(admin.ModelAdmin):
form = AssetModelForm
# 列表界面的自定义
list_display = ['asset','level']
filter_horizontal = ["sub_level"]
def get_form(self, request, obj=None, **kwargs):
# 在form表单中移除sub_level字段
form = super().get_form(request, obj, **kwargs)
if obj and ((obj.level <= 1) or (obj.level >= 4)):
form.base_fields.pop('sub_level', None)
return form
def get_exclude(self, request, obj=None):
# 只在添加对象时排除sub_level字段
if obj is None:
return ['sub_level']
else:
return super().get_exclude(request, obj=obj)
admin.site.register(System)
admin.site.register(Asset, AssetAdmin)
2. 自定义验证(有验证不通过会提示在该字段上方)
class SpecialStockCodeTypeForm(ModelForm):
def clean_seq(self):
seq = self.cleaned_data.get('seq')
# 验证 seq 字段的格式
if not re.match(r'^\d+(,\d+)*$', seq):
raise ValidationError('Seq must be in the format "1,3,4,5".')
return seq
def clean_type(self):
type = self.cleaned_data.get('type')
# 验证 type 字段的格式
if SpecialStockCodeType.objects.filter(type=type).exists():
raise ValidationError('Type must be unique.')
return type
class SpecialStockCodeTypeAdmin(admin.ModelAdmin):
form = SpecialStockCodeTypeForm
list_display = ['type', 'seq']
3. 自定义字段
class SpecialStockCodeAdmin(admin.ModelAdmin):
form = SpecialStockCodeForm
list_display = ('stock_code', 'get_type_list')
filter_horizontal = ["type"]
def get_type_list(self, obj):
return ', '.join([type.type for type in obj.type.all()])
get_type_list.short_description = 'Type' # 显示的文字
