Borhan Tipu
Posted on August 5, 2019
can you please tell me why same month showing twice with same data?
models.py
class Event(models.Model):
title = models.CharField(max_length=255, default=None, unique=True)
link = models.URLField(default=None, null=True)
description = models.TextField()
date = models.DateField(default=None, null=True)
is_published = models.BooleanField(default=False)
created = models.DateTimeField(auto_now_add=True)
updated = models.DateTimeField(auto_now=True)
def __str__(self):
return self.title
class Meta:
db_table = 'events'
verbose_name = 'event'
verbose_name_plural = 'events'
class EventGroup(models.Model):
event = models.ForeignKey(Event, related_name='events', on_delete=models.CASCADE)
date = models.DateField()
created = models.DateTimeField(auto_now_add=True)
updated = models.DateTimeField(auto_now=True)
class Meta:
db_table = 'event_group'
serializer.py
class EventGroupSerializer(serializers.ModelSerializer):
events = serializers.SerializerMethodField(method_name='get_events')
month_year = serializers.SerializerMethodField(method_name='get_month_year')
total = serializers.SerializerMethodField(method_name='get_count_events')
class Meta:
model = EventGroup
fields = ('month_year', 'total', 'events',)
def get_count_events(self, instance):
org_date = str(instance['date'])
date = datetime.datetime.strptime(org_date, "%Y-%m-%d")
month = date.month
year = date.year
count = Event.objects.filter(date__month=month, date__year=year).count()
return count
def get_month_year(self, instance):
org_date = str(instance['date'])
date = datetime.datetime.strptime(org_date, "%Y-%m-%d").date()
month_year = str(date.month)+'-'+str(date.year)
return str(month_year)
def get_events(self, instance):
org_date = str(instance['date'])
date = datetime.datetime.strptime(org_date, "%Y-%m-%d")
month = date.month
year = date.year
events = Event.objects.filter(date__month=month, date__year=year)
event_serializer = EventSerializer(events, many=True)
return event_serializer.data
views.py
class EventGroupData(ListAPIView):
queryset = EventGroup.objects.all()
serializer_class = EventGroupSerializer
def get_queryset(self):
queryset = self.queryset
return queryset.annotate(month=TruncMonth('date')).values('date').annotate(c=Count('id')).order_by()
if I change the queryset to queryset.annotate(month=TruncMonth('date')).values('month').annotate(c=Count('id')).order_by() ... it shows key error with 'date'.
results
{
"count": 4,
"next": null,
"previous": null,
"results": [
{
"month_year": "6-2019",
"events": [
{
"id": 30,
"title": "Event 2",
"description": "Event 2",
"date": "2019-06-02"
},
{
"id": 31,
"title": "Event 3",
"description": "Event 3",
"date": "2019-06-04"
}
]
},
{
"month_year": "6-2019",
"events": [
{
"id": 30,
"title": "Event 2",
"description": "Event 2",
"date": "2019-06-02"
},
{
"id": 31,
"title": "Event 3",
"description": "Event 3",
"date": "2019-06-04"
}
]
},
{
"month_year": "9-2019",
"events": [
{
"id": 32,
"title": "Event 4",
"description": "Event 4",
"date": "2019-09-04"
},
{
"id": 29,
"title": "Event 1",
"description": "Event 1",
"date": "2019-09-25"
}
]
},
{
"month_year": "9-2019",
"events": [
{
"id": 32,
"title": "Event 4",
"description": "Event 4",
"date": "2019-09-04"
},
{
"id": 29,
"title": "Event 1",
"description": "Event 1",
"date": "2019-09-25"
}
]
}
]
}
it should be like this
{
"count": 4,
"next": null,
"previous": null,
"results": [
{
"month_year": "6-2019",
"events": [
{
"id": 30,
"title": "Event 2",
"description": "Event 2",
"date": "2019-06-02"
},
{
"id": 31,
"title": "Event 3",
"description": "Event 3",
"date": "2019-06-04"
}
]
},
{
"month_year": "9-2019",
"events": [
{
"id": 32,
"title": "Event 4",
"description": "Event 4",
"date": "2019-09-04"
},
{
"id": 29,
"title": "Event 1",
"description": "Event 1",
"date": "2019-09-25"
}
]
},
]
}
💖 💪 🙅 🚩
Borhan Tipu
Posted on August 5, 2019
Join Our Newsletter. No Spam, Only the good stuff.
Sign up to receive the latest update from our blog.
Related
