質問編集履歴
4
文法の修正
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#blog/
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#blog/urls.py
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```python
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from django import
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from django.urls import path
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from . import views
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urlpatterns = [
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path('', views.post_list, name='post_list'),
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path('post/<int:pk>/post_form/', views.post_form, name='post_form'),
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]
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class PostForm(forms.ModelForm):
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class Meta:
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model = Post
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fields = '__all__'
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```
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#blog/templates/blog/post_list.html
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```HTML
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{% for post in posts %}
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<form action="" method="POST">
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<form action="{% url 'post_form' pk=post.pk %}" method="POST">
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{% csrf_token %}
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<input type="submit" value="+1">
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</form>
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def post_form(request):
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if request.method == 'POST':
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post = get_object_or_404(Post, pk=pk)
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post.up_number += 1
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up_number = int(form.cleaned_data['up_number']) + 1
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post.save()
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return redirect('/')
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return render(request, 'blog/post_list')
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```
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3
文法の修正
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@@ -41,8 +41,11 @@
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class PostForm(forms.ModelForm):
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class Meta:
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model = Post
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fields = '__all__'
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```
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#blog/templates/blog/post_list.html
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@@ -74,12 +77,14 @@
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def post_form(request):
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if request.method == 'POST':
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form = PostForm(request.POST)
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if form.is_valid():
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up_number = int(form.cleaned_data['up_number']) + 1
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form.save()
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return redirect('/')
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post.up_number = int(post.cleaned_data['up_number']) + 1
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post.save()
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```
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1
書式の改善
title
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@@ -1,5 +1,4 @@
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1
1
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### 前提・実現したいこと
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-
※ここに写真を載せていない分はDjango Girlsのチュートリアルと同じです。（ディレクトリも同様）
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3
2
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Djangoでデータベースの更新を行いたいです。
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4
3
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具体的に言うと、ブラウザ上で”＋１”のボタンを押すとデータベース上でその数字が＋１されその数字をブラウザ上に表示したいです。
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例）元の数字が１→ボタンを押す→データベースが更新され１が２になる→２がブラウザ上に表示される。
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@@ -10,23 +9,82 @@
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10
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ボタンを押してもデータベース上では数字の更新後行われていない。
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### 該当のソースコード
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#models.py
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#blog/models.py
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```python
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from django.conf import settings
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from django.db import models
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from django.utils import timezone
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class Post(models.Model):
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author = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
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title = models.CharField(max_length=200)
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#このup_numberをどうにかしたい
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up_number = models.IntegerField(default=0)
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published_date = models.DateTimeField(blank=True, null=True)
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def publish(self):
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self.published_date = timezone.now()
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self.save()
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```
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18
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-
#forms.py
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#blog/forms.py
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```python
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19
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-
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38
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from django import forms
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39
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21
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from .models import Post
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-
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#views.py
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class PostForm(forms.ModelForm):
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up_number = forms.IntegerField()
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```
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48
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+
#blog/templates/blog/post_list.html
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49
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```HTML
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50
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{% for post in posts %}
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+
<form action="" method="POST">
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52
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+
{% csrf_token %}
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53
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+
<input type="submit" value="+1">
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</form>
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+
<div>
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<h5>{{ post.up_number }}</h5>
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</div>
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{% endfor %}
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+
```
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+
#blog/views.py
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63
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```python
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64
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from django.shortcuts import render
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from django.utils import timezone
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from .forms import PostForm
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67
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from .models import Post
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+
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def post_list(request):
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posts = Post.objects.filter(published_date__lte=timezone.now()).order_by('published_date')
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return render(request, 'blog/post_list.html', {'posts': posts})
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#分からないポイント
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def post_form(request):
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75
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+
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76
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if request.method == 'POST':
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77
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+
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78
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+
post.up_number = int(post.cleaned_data['up_number']) + 1
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79
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+
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80
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+
post.save()
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81
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+
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82
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+
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83
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+
```
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84
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+
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85
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86
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+
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87
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+
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30
88
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### 補足情報（FW/ツールのバージョンなど）
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31
89
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OS Windows10
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32
90
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python 3.7.3
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