/home/create/ 处的 IntegrityError（1048，“列 'country_id' 不能为空”）
[英]IntegrityError at /home/create/ (1048, "Column 'country_id' cannot be null")
问题描述
I'm trying to create news directly on the webpage using Django 2.7, but have a problem with adding categories and countries IntegrityError at /home/create/ (1048, "Column 'country_id' cannot be null") Here is my code: home/models.py
我正在尝试使用 Django 2.7 直接在网页上创建新闻，但是在 /home/create/（1048，“列 'country_id' 不能为空”）添加类别和国家/地区时遇到问题，这是我的代码：home /模型.py
class Category(models.Model):
name = models.CharField(max_length=255)
def __str__(self):
return self.name
class Country(models.Model):
name = models.CharField(max_length=255)
def __str__(self):
return self.name
class News(models.Model):
pub_date = models.DateTimeField('Date: ')
article = models.CharField(max_length=200)
content = models.TextField(default="")
country = models.ForeignKey(Country, on_delete=models.CASCADE)
likes = models.IntegerField(default=0)
category = models.ForeignKey(Category, on_delete=models.CASCADE)
def __str__(self):
return self.article
def was_published_recently(self):
return self.pub_date >= timezone.now() - datetime.timedelta(days=1)
home/views.py主页/views.py
def create(request):
if request.method == "POST":
adding = News()
adding.likes = 0
adding.pub_date = timezone.now()
adding.article = request.POST.get("Article")
adding.content = request.POST.get("Content")
adding.category = request.POST.get("Category")
adding.country = request.POST.get("Country")
adding.save()
return HttpResponseRedirect("/home/")
home/urls.py主页/urls.py
from django.urls import path
from . import views
app_name = 'home'
urlpatterns = [
path('', views.index, name='index'),
path('<int:news_id>/', views.detail, name='detail'),
path('create/', views.create),
path('<int:news_id>/delete/', views.delete_news, name='delete'),
]
index.html (I add my posts from my home page) index.html（我从我的主页添加我的帖子）
<body> <form method="POST" action="create/" class="post_form"> {% csrf_token %} <p> <label>Article</label><br> <input type="text" name="Article" /> </p> <p> <label>Content</label><br> <input type="text" name="Content" /> </p> <p> <label>Category</label><br> <select> {% if category %} {% for el in category %} <option name="Category">{{ el.name }}</option> {% endfor %} {% endif %} </select> </p> <p> <label>Country</label><br> <select> {% if countries %} {% for el in countries %} <option name="Country">{{ el.name }}</option> {% endfor %} {% endif %} </select> </p> <input type="submit" value="Submit" > </form> </body>
Please help!请帮忙！
1 个解决方案
解决方案1
0 2019-12-16 12:45:32
You specify the name of a <select> input element in the <select> tag, not in the <option>您可以在<select>标签中指定<select>输入元素的名称，而不是在<option>因此，您应该将表单编写为：
<select name="Country">
{% if countries %}
{% for el in countries %}
<option>{{ el.name }}</option>
{% endfor %}
{% endif %}
</select> That being said, I strongly advise you to work with Django forms [Django-doc] .话虽如此，我强烈建议您使用Django 表单[Django-doc] 。 These encapsulate the logic, make it less likely to make mistakes, and remove a lot of boilerplate code.这些封装了逻辑，使其不太可能出错，并删除了大量样板代码。
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