social_media_platform/application/admin.py

from django.contrib import admin
from django.contrib.auth import get_user_model
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
from django.contrib.auth.models import User

from .models import Post, CustomUser
from .models import ScheduledReport, ReportRecipient, ScheduledReportGroup
from .forms import ScheduledReportForm


class CustomUserInline(admin.StackedInline):
    model = CustomUser
    can_delete = False
    verbose_name_plural = 'customUsers'

# Define a new User admin
class UserAdmin(BaseUserAdmin):
    inlines = (CustomUserInline, )

# Re-register UserAdmin
admin.site.unregister(User)
admin.site.register(User, UserAdmin)

admin.site.register(Post)


class ReportRecipientAdmin(admin.TabularInline):
    model = ReportRecipient
class ScheduledReportAdmin(admin.ModelAdmin):
    """
        List display for Scheduled reports in Django admin
    """
    model = ScheduledReport
    list_display = ('id', 'get_recipients')
    inlines = [
        ReportRecipientAdmin
    ]
    form = ScheduledReportForm
    def get_recipients(self, model):
        recipients = model.reportrecep.all().values_list('email', flat=True)
        if not recipients:
            return 'No recipients added'
        recipient_list = ''
        for recipient in recipients:
            recipient_list = recipient_list + recipient + ', '
        return recipient_list[:-2]
    get_recipients.short_description = 'Recipients'
    get_recipients.allow_tags = True
class ScheduledReportGroupAdmin(admin.ModelAdmin):
    """
        List display for ScheduledReportGroup Admin
    """
    model = ScheduledReportGroup
    list_display = ('get_scheduled_report_name','get_report_name')
    def get_scheduled_report_name(self, model):
        return model.scheduled_report.subject
    def get_report_name(self, model):
        return model.report.name
    get_scheduled_report_name.short_description = "Scheduled Report Name"
    get_report_name.short_description = "Report Name"
    show_change_link = True
    get_report_name.allow_tags = True
admin.site.register(ScheduledReport, ScheduledReportAdmin)
admin.site.register(ScheduledReportGroup, ScheduledReportGroupAdmin)