在models.py中,我创建了一个名为" category"的字符类型字段。用户输入类别名称后,它将保存在数据库中,现在我要显示存储在中的所有类别名称我创建了四个类别名称。我可以看到数据库中的所有四个,但是当在UI中显示它时,我看到NONE而不是类别名称。
views.py,
def add_cat(request):
form = CatForm(request.POST or None)
context = {"form":form}
if form.is_valid():
instance = form.save(commit=False)
category = form.cleaned_data.get("category")
instance.category = category
instance.save()
messages.add_message(request, messages.INFO, 'Category Added')
return render(request,"add-cat.html",context)
forms.py,
class CatForm(forms.ModelForm):
class Meta:
model = Add_cat
fields = ['category']
我的模板文件
{% extends "admin-menu.html" %}
{% block content %}
{% load staticfiles %}
<head>
<link rel="stylesheet" href="{% static 'style.css' %}">
</head>
<h2 style="text-align: center;">Add Category</h2>
<form method="POST">
{% csrf_token %}
<table align="center">
{{form.as_table}}
</table>
<input type="submit" value="Add" style="margin-left: 48%;"/>
<input type="reset" value="Cancel"/>
</form>
{% if messages %}
<ul class="messages" style="list-style-type: none;">
{% for message in messages %}
<li{% if message.tags %} class="{{ message.tags }}"{% endif %}>{{ message }}</li>
{% endfor %}
</ul>
{% endif %}
 
<form id="id1">
{% for field in form %}
<table align="center">
<tr><th>Category Name</th></tr>
<tr><td>{{field.value}}</td></tr>
</table>
{% endfor %}
</form>
{% endblock %}
答案 0 :(得分:1)
试试这个
def add_cat(request):
form = CatForm(request.POST or None)
catagories = <model>.objects.all()
context = {"form":form, 'categories':categories}
if form.is_valid():
instance = form.save(commit=False)
category = form.cleaned_data.get("category")
instance.category = category
instance.save()
messages.add_message(request, messages.INFO, 'Category Added')
return render(request,"add-cat.html",context)
在模板中
{% for category in categories %}
<table align="center">
<tr><th>Category Name</th></tr>
<tr><td>{{ category }}</td></tr>
</table>
{% endfor %}