DjangoGirls Seoul 2017 11월 세미나에서 발표한 문서입니다. - 소스 코드 : https://github.com/hannal/pieces-of-django-admin-djangogirls-seoul - 각종 소식 : https://fb.com/hello.kaycha

1.
kay@hannal.net

2. • 차경묵 (한날)
• 프리랜서 개발자
• 날로 먹는 Django 웹 프로그래밍 (2008)
• 날로 먹는 Django 웹 프레임워크 (2014)
• http://blog.hannal.com

6.
https://www.facebook.com/hello.kaycha
https://github.com/hannal/pieces-of-django-admin-djangogirls-seoul

9. User
Profile
Product
ProductImage
Order

10. Profile
class Profile(models.Model):
registration_routes = (
('direct', _(' '), ),
('guestbook', _(' '), ),
('cocoa', _(' '), ),
('goggle', _(' '), ),
('navar', _(' '), ),
)
user = models.OneToOneField(settings.AUTH_USER_MODEL)
registration_route = models.CharField(_(' '), max_length=40,
choices=registration_routes,
default='direct')

11. Product
class Product(models.Model):
statuses = (
('active', _(' '), ),
('sold_out', _(' '), ),
('obsolete', _(' '), ),
('deactive', _(' '), ),
)
categories = (
('decoration', _(' '), ),
('pan', _(' '), ),
('roll', _(' '), ),
)
category = models.CharField(_(' '), max_length=20, choices=categories)
name = models.CharField(_(' '), max_length=100)
content = models.TextField(_(' '))
regular_price = models.PositiveIntegerField(_(' '))
selling_price = models.PositiveIntegerField(_(' '))
status = models.CharField(_(' '), max_length=20, choices=statuses)
created_at = models.DateTimeField(auto_now_add=True)
updated_at = models.DateTimeField(auto_now=True)

12. ProductImage
class ProductImage(models.Model):
product = models.ForeignKey(Product)
content = models.ImageField()
created_at = models.DateTimeField(auto_now_add=True)
updated_at = models.DateTimeField(auto_now=True)

13. Order
from uuid import uuid4
class Order(models.Model):
progresses = (
('requested', _(' '), ),
('checkout_payment', _(' '), ),
('paid', _(' '), ),
('failed_payment', _(' '), ),
('prepared_product', _(' '), ),
('prepared_delivery', _(' '), ),
('ongoing_delivery', _(' '), ),
('done', _(' '), ),
)
sn = models.UUIDField(_(' '), unique=True, editable=False, default=uuid4)
user = models.ForeignKey(settings.AUTH_USER_MODEL, null=True, blank=True)
items = models.ManyToManyField(Product)
product_cost = models.IntegerField(_(' '))
progress = models.CharField(_(' '), max_length=20, choices=progresses,
default='requested')
comment = models.TextField(_(' '), null=True, blank=True)
created_at = models.DateTimeField(auto_now_add=True)
updated_at = models.DateTimeField(auto_now=True)

15. from django.contrib import admin
from . import models
admin.site.register(models.Product)

20. Product object ???

21. __str__()
__str__()
__str__()
class Product(models.Model):
#
def __str__(self):
return f'<{self.pk}> {self.name}'

24. list_display
@admin.register(models.Product)
class ProductAdmin(admin.ModelAdmin):
list_display = (
'pk', 'name', 'category', 'regular_price', 'selling_price',
'status', 'created_at', 'updated_at',
)
admin.site.register(models.Product, ProductAdmin)

27. list_display_links
@admin.register(models.Product)
class ProductAdmin(admin.ModelAdmin):
#
list_display_links = (
'pk', 'name', 'category', 'regular_price', 'selling_price',
'status', 'created_at', 'updated_at',
)

30. ProductImage

31. ForeignKey
TabularInline
StackedInline
inlines
class ProductImageInline(admin.TabularInline):
model = models.ProductImage
@admin.register(models.Product)
class ProductAdmin(admin.ModelAdmin):
#
inlines = (ProductImageInline, )

34. extra
max_num
min_num
class ProductImageInline(admin.TabularInline):
model = models.ProductImage
extra = 2
max_num = 4
min_num = 1

37. list_filter
search_fields
date_hierarchy
@admin.register(models.Product)
class ProductAdmin(admin.ModelAdmin):
#
list_filter = ('category', 'status', )
search_fields = ('name', 'selling_price', )
date_hierarchy = 'updated_at'

38. search_fields list_filter
date_hierarchy

40. short_description
from django.utils.translation import ugettext as _
from django.utils.safestring import mark_safe
@admin.register(models.Product)
class ProductAdmin(admin.ModelAdmin):
list_display = (
'get_title_image', 'pk', 'name', 'category', 'regular_price',
'selling_price', 'status', 'created_at', 'updated_at',
)
list_display_links = (
'get_title_image', 'pk', 'name', 'category', 'regular_price',
'selling_price', 'status', 'created_at', 'updated_at',
)
#
def get_title_image(self, obj):
image = obj.productimage_set.order_by('pk').first()
if not image:
return ''
return mark_safe(f'<img src="{image.content.url}" style="width: 50px;">')
get_title_image.short_description = _(' ')

44. ForeignKey

45. fields
readonly_fields
@admin.register(models.Order)
class OrderAdmin(admin.ModelAdmin):
#
readonly_fields = ('user', 'product_cost', 'comment', )

48. User
User
from django.contrib.auth.models import User
admin.site.unregister(User)
from django.contrib.auth import get_user_model
user_model = get_user_model()
admin.site.unregister(user_model)
User
User

49. User
UserAdmin
from django.contrib.auth.admin import UserAdmin
@admin.register(user_model)
class CustomUserAdmin(UserAdmin):
list_display = UserAdmin.list_display + ('get_registration_route', )
def get_registration_route(self, obj):
try:
return obj.profile.get_registration_route_display()
except models.Profile.DoesNotExist:
return '?'
get_registration_route.short_description = _(' ')

51. • User.objects.filter(profile__registration_route='direct')
@admin.register(user_model)
class CustomUserAdmin(UserAdmin):
list_display = UserAdmin.list_display + ('get_registration_route', )
list_filter = UserAdmin.list_filter + ('profile__registration_route', )
def get_registration_route(self, obj):
try:
return obj.profile.get_registration_route_display()
except models.Profile.DoesNotExist:
return '?'
get_registration_route.short_description = _(' ')

54. admin.SimpleListFilter
lookups() tuple
queryset() QuerySet
QuerySet
from django.db.models import Count, Case, When, IntegerField
class UserOrderCountFilter(admin.SimpleListFilter):
title = _(' ')
parameter_name = 'order_count'
def lookups(self, request, model_admin):
return (
('exact-0', _(' '), ),
('exact-1', _('1 '), ),
('exact-2', _('2 '), ),
('exact-3', _('3 '), ),
('gt-3', _('3 '), ),
)
#

55. #
def queryset(self, request, queryset):
value = self.value()
if not value:
return queryset
try:
lookup_keyword, count = value.split('-')
count = int(count)
if count == 0:
users = models.Order.objects
.filter(progress='done')
.values_list('user__id')
return queryset.exclude(pk__in=users)
else:
return queryset
.annotate(cnt=Count(Case(
When(order__progress='done', then=0),
output_field=IntegerField()
))).filter(** {f'cnt__{lookup_keyword}': count})
except Exception:
return queryset.none()

56. @admin.register(user_model)
class CustomUserAdmin(UserAdmin):
list_display = UserAdmin.list_display + (
'get_registration_route',
)
list_filter = UserAdmin.list_filter + (
'profile__registration_route', UserOrderCountFilter,
)

57. http://.../admin/auth/user/?order_count=exact-1

59. from django.db.models import Sum
class SumOrderCostFilter(admin.SimpleListFilter):
title = _(' ')
parameter_name = 'order_cost'
def lookups(self, request, model_admin):
return (
('lt-50000', _('5 '), ),
('gte-50000--lt-100000', _('5 10 '), ),
('gte-100000--lt-200000', _('10 20 '), ),
('gte-200000--lt-500000', _('20 50 '), ),
('gte-500000', _('50 '), ),
)

60. #
def queryset(self, request, queryset):
value = self.value()
if not value:
return queryset
try:
l1, l2 = value.split('--')
except ValueError:
l1, l2 = value, None
lookups = {}
for l in (l1, l2):
if not l:
continue
try:
lookup_keyword, amount = l.split('-')
lookups[f'cost__{lookup_keyword}'] = int(amount)
except ValueError:
continue
#

61. def queryset(self, request, queryset):
#
#
if not lookups:
return queryset.none()
try:
return queryset.filter(order__progress='done')
.annotate(cost=Sum('order__product_cost'))
.filter(**lookups)
except Exception:
return queryset.none()

62. @admin.register(user_model)
class CustomUserAdmin(UserAdmin):
list_display = UserAdmin.list_display + (
'get_registration_route',
)
list_filter = (
'profile__registration_route',
UserOrderCountFilter, SumOrderCostFilter,
)

63. http://.../admin/auth/user/?order_cost=lt-50000

65. actions
queryset
from django.contrib import messages
def change_progress_to_ongoing_delivery(modeladmin, request, queryset):
queryset.update(progress='ongoing_delivery')
messages.success(request, _(' .'))
change_progress_to_ongoing_delivery.short_description = _(' ')
@admin.register(models.Order)
class OrderAdmin(admin.ModelAdmin):
#
actions = (change_progress_to_ongoing_delivery, )

70. ForeignKey
class ProductOrderInline(admin.StackedInline):
model = models.Order.items.through
min_num = 1
@admin.register(models.Order)
class OrderAdmin(admin.ModelAdmin):
fields = ('progress', )
inlines = (ProductOrderInline, )

71. templates/admin/<app_name>/<model_name>/
change_list.html
urls.py

72. • https://github.com/crccheck/django-
object-actions
• pip install django-object-actions
settings.py INSTALLED_APPS
'django_object_actions'
change_list.html

73. from django_object_actions import DjangoObjectActions
@admin.register(user_model)
class CustomUserAdmin(DjangoObjectActions, UserAdmin):
#
change_actions = ('make_user_happy', )
def make_user_happy(self, request, obj):
messages.info(request, f'{obj} .')
# do something
make_user_happy.label = _(' ')
make_user_happy.short_description = _(' ')

75. list_max_show_all
@admin.register(user_model)
class CustomUserAdmin(DjangoObjectActions, UserAdmin):
#
list_per_page = 1
list_max_show_all = 1000000