예니의 코딩일기

투표(Votes) 기능 구현하기 1 - Models polls/models.py from django.contrib.auth.models import User class Vote(models.Model): question = models.ForeignKey(Question, on_delete=models.CASCADE) choice = models.ForeignKey(Choice, on_delete=models.CASCADE) voter = models.ForeignKey(User, on_delete=models.CASCADE) class Meta: constraints = [ models.UniqueConstraint(fields=['question', 'voter'], name='unique_vote..

User 추가하기 polls/models.py class Question(models.Model): question_text = models.CharField(max_length=200, verbose_name='질문') pub_date = models.DateTimeField(auto_now_add=True, verbose_name='생성일') owner = models.ForeignKey('auth.User', related_name='questions', on_delete=models.CASCADE, null=True) @admin.display(boolean=True, description='최근생성(하루기준)') def was_published_recently(self): return self...

"Serialize"는 모델 인스턴스나 QuerySet과 같은 데이터를 JSON 형식의 파일로 변환하는 작업 입니다. "Deserialize"는 JSON 형식의 데이터를 정의된 포맷에 맞추어 다시 모델 인스턴스로 변환하는 작업 입니다. "Serializer"는 형식을 변환하는 과정을 담당하는 매개체 입니다. serializer 생성하기 polls_api/serializers.py from rest_framework import serializers from polls.models import Question class QuestionSerializer(serializers.Serializer): id = serializers.IntegerField(read_only=True) question_text =..

21. 폼(Forms) polls/views.py from django.http import HttpResponse, HttpResponseRedirect from django.urls import reverse ... def vote(request, question_id): question = get_object_or_404(Question, pk=question_id) try: selected_choice = question.choice_set.get(pk=request.POST['choice']) except (KeyError, Choice.DoesNotExist): return render(request, 'polls/detail.html', {'question': question, 'error_..

16. 뷰(Views)와 템플릿(Templates) polls/templates/polls/index.html {{first question}} polls/views.py from .models import * from django.shortcuts import render def index(request): latest_question_list = Question.objects.order_by('-pub_date')[:5] context = {'first_question': latest_question_list[0]} return render(request, 'polls/index.html', context) >>> from polls.models import * >>> Question.objects...

8. Django Shell 사용하기 polls/models.py from django.db import models class Question(models.Model): question_text = models.CharField(max_length=200) pub_date = models.DateTimeField('date published') def __str__(self): return f'제목: {self.question_text}, 날짜: {self.pub_date}' class Choice(models.Model): question = models.ForeignKey(Question, on_delete=models.CASCADE) choice_text = models.CharField(max_..