The document outlines a Django application framework that includes models for user profiles, products, images, and orders. It provides the structure for managing product and order data, including fields for tracking status and prices, and includes admin configurations to manage data displays. Additionally, it integrates user management features, allowing for custom administrative user displays and filters based on order counts and costs.

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