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import os | |
import importlib | |
# by default use development | |
ENV_ROLE = os.getenv('ENV_ROLE', 'development') | |
env_settings = importlib.import_module(f'example_project.settings.{ENV_ROLE}') | |
globals().update(vars(env_settings)) |
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project_name | |
| | |
|__project_name (Put all the settings for the app here.) | |
| |__ __init__.py | |
| |__settings | |
| |__ __init__.py | |
| |__ base.py | |
| |__ development.py | |
| |__ staging.py | |
| |__ production.py |
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from django.db import models | |
class Person(models.Model): | |
name = models.CharField(max_length=50) | |
age = models.IntegerField() |
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from rest_framework import serializers | |
from applications.people.models import Person | |
class PersonDetailSerializer(serializers.ModelSerializer): | |
class Meta: | |
model = Person | |
fields = ('name', 'age') |
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from rest_framework import generics | |
from applications.people.serializers import PersonDetailSerializer | |
class PeopleListView(generics.ListCreateAPIView): | |
queryset = Person.objects.all() | |
serializer_class = PersonDetailSerializer |
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class PersonDetailSerializer(serializers.ModelSerializer): | |
def validate_age(self, age): | |
if age < 0: | |
raise serializers.ValidationError('Age must be a positive number.') | |
return age | |
class Meta: | |
... |
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over_18_people = Person.objects.filter(age__gte=18) |
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from django.db import models | |
from applications.people.models import Person | |
class Pet(models.Model): | |
owner = models.ForeignKey(Person, related_name='pets', on_delete=models.CASCADE) | |
name = models.CharField(max_length=30) |
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for person in Person.objects.all(): | |
print(person.name) | |
print('pets info:') | |
for pet in person.pets.all(): | |
print(pet.name) | |
print('---') |
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for person in Person.objects.all().prefetch_related('pets'): | |
print(person.name) | |
print('pets info:') | |
for pet in person.pets: | |
print(pet.name) | |
print('---') |
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