#icecreamcompany

[dryiceabudhabi]

Dry ice Supply in UAE | Call 0555444118 | Best Wholesale dealers of Dry Ice in UAE

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[kobbisoven]

sunday plans? #icecream #icecreambusiness #icecreamcompany #foodie #instafood #yummy#coffeeberry #igcoffee #icedcoffee #coffeedaily #chocolatecoffee #instacake #cupcakes#foodstagram #pastry  #summer #love #hungry #sweets https://www.instagram.com/p/CLfSVMWAvyx/?igshid=1vkfzggjrobyi

[xtremeroads]

Lockdown flavours... Yesterday I went to dairy shop asked for Icecream as it was craving yummy on taste buds but unfortunately nothing was available accept emergency milk and curd. Came back home empty handed and remembered this moment while on my Nepal trip in Kathmandu streets of amazing architecture and walking through those narrow lanes, wo! Got this lolipop icecream. As of now quenched my thirst . I know same must be the situation with you all. Now I am rushing to make one at home...it is said never leave yourself empty, think and do it. #icecream #lolipop #xtremeroads #travelinfluencer #tripocommunity #vaishaliseta #icecreamcompany (at Kathmandu, Nepal) https://www.instagram.com/p/B-q7OgcAD6X/?igshid=h5ifim8ud251

[90jeduardo-blog]

Here's How This Former Architect Started an Ice Cream Company The founder of Coolhaus ice cream talks about how she got into the sweet business. https://www.entrepreneur.com/video/333352?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+entrepreneur%2Flatest+%28Entrepreneur%29 . . . . #icecreamcompany #startup #startups #start-ups #leader #leadership #inenglish #entrepreneurlifestyle #talentmatters #entrepreneurs #entrepreneur #motivation #business #career #businesslike #Forbes #innovative #innovation #entrepreneurial #entrepreneurship #education #educational https://www.instagram.com/p/Bxc08PlHeUi/?utm_source=ig_tumblr_share&igshid=iqf2f3o1wzke

[paramountltd]

#icecream #icecreambusiness #icecreamcompany #dessert #sweet #delicious #sweettooth #dessertporn   #icecreamblog #icecreamlover #ice #cream #chocolate #vanilla #caramel #geticecream #haveicecream #tasty #food #chocolate #foodporn #foodie #instafood #yummy #eat #yum #instagood #foodpics #eating #foodgasm #summer #love #hungry #foods #sweets #IceCreamDay #SundaeSunday #Yum #IScreamForIcecream #IceCreamCone #Gelato #IceCreamRolls #IceCreams #IceCreamCake #IceCreamParty #IceCreamLover #IceCreamOfInsta #lickit #dessertisland #icecreamcone #flavor #creamparlor 

[codehunter]

Aggregate (and other annotated) fields in Django Rest Framework serializers

I am trying to figure out the best way to add annotated fields, such as any aggregated (calculated) fields to DRF (Model)Serializers. My use case is simply a situation where an endpoint returns fields that are NOT stored in a database but calculated from a database.

Let's look at the following example:

models.py

class IceCreamCompany(models.Model): name = models.CharField(primary_key = True, max_length = 255)class IceCreamTruck(models.Model): company = models.ForeignKey('IceCreamCompany', related_name='trucks') capacity = models.IntegerField()

serializers.py

class IceCreamCompanySerializer(serializers.ModelSerializer): class Meta: model = IceCreamCompany

desired JSON output:

[ { "name": "Pete's Ice Cream", "total_trucks": 20, "total_capacity": 4000 }, ...]

I have a couple solutions that work, but each have some issues.

Option 1: add getters to model and use SerializerMethodFields

models.py

class IceCreamCompany(models.Model): name = models.CharField(primary_key=True, max_length=255) def get_total_trucks(self): return self.trucks.count() def get_total_capacity(self): return self.trucks.aggregate(Sum('capacity'))['capacity__sum']

serializers.py

class IceCreamCompanySerializer(serializers.ModelSerializer): def get_total_trucks(self, obj): return obj.get_total_trucks def get_total_capacity(self, obj): return obj.get_total_capacity total_trucks = SerializerMethodField() total_capacity = SerializerMethodField() class Meta: model = IceCreamCompany fields = ('name', 'total_trucks', 'total_capacity')

The above code can perhaps be refactored a bit, but it won't change the fact that this option will perform 2 extra SQL queries per IceCreamCompany which is not very efficient.

Option 2: annotate in ViewSet.get_queryset

models.py as originally described.

views.py

class IceCreamCompanyViewSet(viewsets.ModelViewSet): queryset = IceCreamCompany.objects.all() serializer_class = IceCreamCompanySerializer def get_queryset(self): return IceCreamCompany.objects.annotate( total_trucks = Count('trucks'), total_capacity = Sum('trucks__capacity') )

This will get the aggregated fields in a single SQL query but I'm not sure how I would add them to the Serializer as DRF doesn't magically know that I've annotated these fields in the QuerySet. If I add total_trucks and total_capacity to the serializer, it will throw an error about these fields not being present on the Model.

Option 2 can be made work without a serializer by using a View but if the model contains a lot of fields, and only some are required to be in the JSON, it would be a somewhat ugly hack to build the endpoint without a serializer.

https://codehunter.cc/a/django/aggregate-and-other-annotated-fields-in-django-rest-framework-serializers

[dailylogochallenge]

Introducing this ice cream company logo concept by @thewanderingcrow. We’re lovin’ the retro vibe! 🙌🏻 What do you guys think of this logo? 🤔 #icecream #icecreamcompany #logodesigns #icecreamlover #logodesinger #dailylogochallenge #dailylogos #logoconcepts #logodesigninspiration https://instagr.am/p/CWV70gEPP-_/

[spacesplusplaces]

Papa Diddi's Ice Cream Company Sapphire Bloc, Ortigas Center, Pasig City

[bevanorhell]

#NozStock2014 #thesplitscreen #icecreamcompany (at NozStock)

[smiling4forever]

#nyc #icecreamcompany