我想为管理员运行自定义的保存功能，该功能必须与常规管理员不同。原因是我在模型中隐藏了一个字段（parking_off）。我正在做一个停车应用程序，经理希望为员工用户隐藏一个字段，因此他们以某种方式调整了我的整个代码。
我如何使此保存功能仅对管理员运行？ parking_off字段仅对管理员可见。
def save(self):
list = []
d = self.parking_on
while d <= self.parking_off:
list.append(
Parking(user=self.user,
email=self.email,
parking_on=d,
parking_off=d,
location=self.location
)
)
d = d + timedelta(days=1)
Parking.objects.bulk_create(list)
请在下面找到我的模特：
from django.db import models
from django.conf import settings
from django.core.exceptions import ValidationError
from django.utils.translation import gettext_lazy as _
from datetime import datetime, timedelta, time
from django.core.exceptions import NON_FIELD_ERRORS
today = datetime.now().date()
tomorrow = today + timedelta(1)
now = datetime.now()
l = now.hour
m = int(now.strftime("%H"))
class ParkingManager(models.Manager):
def active(self, *args, **kwargs):
return super(ParkingManager, self).filter(draft=False).filter(parking_on__lte=datetime.now())
class Parking(models.Model):
PARKING_PLOT = (
('P1', 'Parking #1'),('P2', 'Parking #2'), ('P3', 'Parking #3'),
('P4', 'Parking #4'),('P5', 'Parking #5'), ('P6', 'Parking #5'),
('P7', 'Parking #7'),('P8', 'Parking #8'), ('P9', 'Parking #9'),
('P10', 'Parking #10'),('P11', 'Parking #11'), ('P12', 'Parking #12'),
('P13', 'Parking #13'),('P14', 'Parking #14'), ('P15', 'Parking #15')
)
user = models.ForeignKey(settings.AUTH_USER_MODEL,
blank=True, null=True, default=1, on_delete=True)
email = models.EmailField(blank=True, null=True)
parking_on = models.DateField(auto_now=False, auto_now_add=False, blank=True, null=True,
help_text='Alege data cand doresti sa vii in office',)
parking_off = models.DateField(auto_now=False, auto_now_add=False, blank=True, null=True,
help_text='Alege Data Plecarii')
numar_masina = models.CharField(max_length=8, default="IF77WXV", blank=True, null=True,
help_text='Introdu Numarul Masinii')
location = models.CharField(max_length=3, blank=True, default="P1", null=True, choices=PARKING_PLOT,
help_text='Alege Locul de Parcare Dorit')
updated = models.DateTimeField(
auto_now=True, auto_now_add=False, blank=True, null=True)
timestamp = models.DateTimeField(
auto_now=False, auto_now_add=True, blank=True, null=True)
# coming_hour = models.TimeField(default=time(
# 9, 00), auto_now=False, auto_now_add=False, help_text='Alege Ora Venirii')
# departure_hour = models.TimeField(default=time(
# 18, 00), auto_now=False, auto_now_add=False, help_text='Alege Ora Plecarii')
objects = ParkingManager()
def __str__(self):
return self.location + " | " + str(self.parking_on) + " | " + str(self.parking_off)
class Meta:
verbose_name_plural = "parking"
ordering = ["-parking_on"]
unique_together = ("parking_on", "location")
def clean(self):
if self.parking_on == today: # merge--vedem dak parcam azi
raise ValidationError(
{'parking_on': _('Please book for a date starting tomorrow')})
if self.parking_off < self.parking_on: # merge-vedem daca bookam in trecut
raise ValidationError(
{'parking_off': _('You cant book for a past date!')})
def validate_unique(self, exclude=None):
try:
super(Parking, self).validate_unique()
except ValidationError as e:
raise ValidationError(
{'location':
_("Dear " + str(self.user) +
" seems that the parking places " + str(self.location) +
" you want to book, is already taken on " + str(self.parking_on) + " !" +
" Please select another date or other parking location! "
)})
def save(self):
list = []
d = self.parking_on
while d <= self.parking_off:
list.append(
Parking(user=self.user,
email=self.email,
parking_on=d,
parking_off=d,
location=self.location
)
)
d = d + timedelta(days=1)
Parking.objects.bulk_create(list)
管理员：
from django.contrib import admin
from .models import Parking
from django.contrib import messages
def remove_from_fieldsets(fieldsets, fields):
for fieldset in fieldsets:
for field in fields:
if field in fieldset[1]['fields']:
new_fields = []
for new_field in fieldset[1]['fields']:
if not new_field in fields:
new_fields.append(new_field)
fieldset[1]['fields'] = tuple(new_fields)
break
class ParkingModelAdmin(admin.ModelAdmin):
list_display = ["user", "location",
"parking_on"]
list_display_links = [ "location"]
list_editable = [ "parking_on"]
list_filter = ["parking_on", "location", "email"]
search_fields = ["location", "parking_on"]
date_hierarchy = 'parking_on'
class Meta:
model = Parking
def get_form(self, request, obj=None, **kwargs):
form = super().get_form(request, obj, **kwargs)
if not obj:
user = request.user
form.base_fields['user'].initial = user
form.base_fields['email'].initial = user.email
return form
def save_model(self, request, obj, form, change):
# add an additional message
user = request.user
messages.info(request, "Dear " + str(user)+ " "+ " please note that your parking plot has been reserved")
super(ParkingModelAdmin, self).save_model(request, obj, form, change)
def get_fieldsets(self, request, obj=None):
fieldsets = super(ParkingModelAdmin, self).get_fieldsets(request, obj)
if not request.user.is_superuser:
remove_from_fieldsets(fieldsets, ('parking_off',))
return fieldsets
admin.site.register(Parking, ParkingModelAdmin)
因为我取消了非管理员的parking_off字段，所以我收到了像下面这样的错误消息，这是正常的，因为该字段不存在
TypeError at /admin/parcare/parking/add/
'<' not supported between instances of 'NoneType' and 'datetime.date'
我也尝试过，但没有运气：
def save(self):
try:
list = []
d = self.parking_on
while d <= self.parking_off:
list.append(
Parking(user=self.user,
email=self.email,
parking_on=d,
parking_off=d,
location=self.location
)
)
d = d + timedelta(days=1)
Parking.objects.bulk_create(list)
except:
parking_off=self.parking_on
list = []
d = self.parking_on
while d <= parking_off:
list.append(
Parking(user=self.user,
email=self.email,
parking_on=d,
parking_off=d,
location=self.location
)
)
d = d + timedelta(days=1)
Parking.objects.bulk_create(list)
也：
def save(self, request, obj, form, change):
if request.user.is_superuser:
list = []
d = self.parking_on
while d <= self.parking_off:
list.append(
Parking(user=self.user,
email=self.email,
parking_on=d,
parking_off=d,
location=self.location
)
)
d = d + timedelta(days=1)
Parking.objects.bulk_create(list)
else:
super().save(request, obj, form, change)
也尝试过：
def save_model_clean(self, request, obj, form, change):
if not request.user.is_superuser:
if self.parking_off != self.parking_on:
raise ValidationError(
{'parking_off': _('You cant book for a future date!')})
obj.save()
答案 0 :(得分：0)
您做对了，如果您将管理面板中的数据另存为：
def save_model(self, request, obj, form, change):
user = request.user
if user.is_superuser:
list = []
d = obj.parking_on
while d <= obj.parking_off:
list.append(
Parking(user=obj.user,
email=obj.email,
parking_on=d,
parking_off=d,
location=obj.location
)
)
d = d + timedelta(days=1)
Parking.objects.bulk_create(list)
messages.info(request, "your_custom_message")
else:
messages.info(request, "Dear " + str(user)+ " "+ " please note that your parking plot has been reserved")
super().save_model(request, obj, form, change)
这足以满足您的需求。