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from django.contrib import admin
from django.contrib.auth.admin import UserAdmin
from django.contrib.auth.models import User
from django.core.paginator import Paginator
from .models import Band, Child, Event, Genre, GrandChild, Parent, ProxyUser, Swallow
site = admin.AdminSite(name="admin")
site.register(User, UserAdmin)
class CustomPaginator(Paginator):
def __init__(self, queryset, page_size, orphans=0, allow_empty_first_page=True):
super().__init__(
queryset, 5, orphans=2, allow_empty_first_page=allow_empty_first_page
)
class EventAdmin(admin.ModelAdmin):
date_hierarchy = "date"
list_display = ["event_date_func"]
@admin.display
def event_date_func(self, event):
return event.date
def has_add_permission(self, request):
return False
site.register(Event, EventAdmin)
class ParentAdmin(admin.ModelAdmin):
list_filter = ["child__name"]
search_fields = ["child__name"]
list_select_related = ["child"]
class ParentAdminTwoSearchFields(admin.ModelAdmin):
list_filter = ["child__name"]
search_fields = ["child__name", "child__age"]
list_select_related = ["child"]
class ChildAdmin(admin.ModelAdmin):
list_display = ["name", "parent"]
list_per_page = 10
list_filter = ["parent", "age"]
search_fields = ["age__exact", "name__exact"]
def get_queryset(self, request):
return super().get_queryset(request).select_related("parent")
class GrandChildAdmin(admin.ModelAdmin):
list_display = ["name", "parent__name", "parent__parent__name"]
search_fields = ["parent__name__exact", "parent__age__exact"]
site.register(GrandChild, GrandChildAdmin)
class CustomPaginationAdmin(ChildAdmin):
paginator = CustomPaginator
class FilteredChildAdmin(admin.ModelAdmin):
list_display = ["name", "parent"]
list_per_page = 10
def get_queryset(self, request):
return super().get_queryset(request).filter(name__contains="filtered")
class BandAdmin(admin.ModelAdmin):
list_filter = ["genres"]
class NrOfMembersFilter(admin.SimpleListFilter):
title = "number of members"
parameter_name = "nr_of_members_partition"
def lookups(self, request, model_admin):
return [
("5", "0 - 5"),
("more", "more than 5"),
]
def queryset(self, request, queryset):
value = self.value()
if value == "5":
return queryset.filter(nr_of_members__lte=5)
if value == "more":
return queryset.filter(nr_of_members__gt=5)
class BandCallableFilterAdmin(admin.ModelAdmin):
list_filter = [NrOfMembersFilter]
site.register(Band, BandCallableFilterAdmin)
class GroupAdmin(admin.ModelAdmin):
list_filter = ["members"]
class ConcertAdmin(admin.ModelAdmin):
list_filter = ["group__members"]
search_fields = ["group__members__name"]
class QuartetAdmin(admin.ModelAdmin):
list_filter = ["members"]
class ChordsBandAdmin(admin.ModelAdmin):
list_filter = ["members"]
class InvitationAdmin(admin.ModelAdmin):
list_display = ("band", "player")
list_select_related = ("player",)
class DynamicListDisplayChildAdmin(admin.ModelAdmin):
list_display = ("parent", "name", "age")
def get_list_display(self, request):
my_list_display = super().get_list_display(request)
if request.user.username == "noparents":
my_list_display = list(my_list_display)
my_list_display.remove("parent")
return my_list_display
class DynamicListDisplayLinksChildAdmin(admin.ModelAdmin):
list_display = ("parent", "name", "age")
list_display_links = ["parent", "name"]
def get_list_display_links(self, request, list_display):
return ["age"]
site.register(Child, DynamicListDisplayChildAdmin)
class NoListDisplayLinksParentAdmin(admin.ModelAdmin):
list_display_links = None
list_display = ["name"]
list_editable = ["name"]
actions_on_bottom = True
site.register(Parent, NoListDisplayLinksParentAdmin)
class ListDisplayLinksGenreAdmin(admin.ModelAdmin):
list_display = ["name", "file", "url"]
list_display_links = ["file", "url"]
site.register(Genre, ListDisplayLinksGenreAdmin)
class SwallowAdmin(admin.ModelAdmin):
actions = None # prevent ['action_checkbox'] + list(list_display)
list_display = ("origin", "load", "speed", "swallowonetoone")
list_editable = ["load", "speed"]
list_per_page = 3
site.register(Swallow, SwallowAdmin)
class DynamicListFilterChildAdmin(admin.ModelAdmin):
list_filter = ("parent", "name", "age")
def get_list_filter(self, request):
my_list_filter = super().get_list_filter(request)
if request.user.username == "noparents":
my_list_filter = list(my_list_filter)
my_list_filter.remove("parent")
return my_list_filter
class DynamicSearchFieldsChildAdmin(admin.ModelAdmin):
search_fields = ("name",)
def get_search_fields(self, request):
search_fields = super().get_search_fields(request)
search_fields += ("age",)
return search_fields
class EmptyValueChildAdmin(admin.ModelAdmin):
empty_value_display = "-empty-"
list_display = ("name", "age_display", "age")
@admin.display(empty_value="†")
def age_display(self, obj):
return obj.age
class UnescapedTitleFilter(admin.SimpleListFilter):
title = "It's OK"
parameter_name = "is_active"
def lookups(self, request, model_admin):
return [("yes", "yes"), ("no", "no")]
def queryset(self, request, queryset):
if self.value() == "yes":
return queryset.filter(is_active=True)
else:
return queryset.filter(is_active=False)
class CustomUserAdmin(UserAdmin):
list_filter = [UnescapedTitleFilter]
site.register(ProxyUser, CustomUserAdmin)
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