新手Django Choicefield / Charfield在html页面上显示

时间:2013-04-30 15:09:28

标签: python html django forms return

我一直在阅读django书和django文档,但仍然可以弄明白。

我有model.py

from django.db import models
from django.forms import ModelForm

class Zonas(models.Model):
    name = models.CharField(max_length=30)
    def __unicode__(self):
        return self.name

class ZonasForm(ModelForm):
    class Meta:
        model = Zonas

view.py

from django    import forms
from testApp.models import Zonas
from django.shortcuts import render_to_response

def menuForm (request):
    z = list (Zonas.objects.all())
    numbers = forms.CharField(max_length=30,
            widget=forms.Select(choices=z))

    return render_to_response('hello.html', {'numbers':numbers})

html

<html>
<body>

<form action="" method="get">
    <div class="field">

{{ form.numbers }}

</div>
<input type="submit" value="Submit">
</form>
</body>
</html>

回答urls.py

from django.conf.urls import patterns, include, url
from testApp.views import menuForm

urlpatterns = patterns('',

   url(r'^hello/$',  menuForm ),
)

当我运行服务器时,我得到的只是一个带有提交按钮的页面,并且没有任何form.number被认为是一个选择菜单。 我试过这个views.py

def menuForm (request):
    z = list (Zonas.objects.all())
    numbers = forms.ChoiceField(choices=z)
    return render_to_response('hello.html', {'numbers':numbers})

但结果是一样的......

任何提示?我应该使用不同的回报吗?

3 个答案:

答案 0 :(得分:2)

当您从未将{{ form.numbers }}变量传递给模板时,您正尝试访问form。您需要使用numbers直接访问{{ numbers }}

此外,您还没有正确使用表单。看看https://docs.djangoproject.com/en/dev/topics/forms/

创建包含ModelChoiceField

的菜单表单

forms.py

class MenuForm(Form):
    zonas = forms.ModelChoiceField(queryset=Zonas.objects.all())

现在use that form in your view

views.py

from myapp.forms import MenuForm

def menuForm(request):
    if request.method == 'POST': # If the form has been submitted...
        form = MenuForm(request.POST) # A form bound to the POST data
        if form.is_valid(): # All validation rules pass
            # Process the data in form.cleaned_data
            # ...
            return HttpResponseRedirect('/success/') # Redirect after POST

    else:
        form = MenuForm() # An unbound form

    return render(request, 'hello.html', {
        'form': form,
    })

现在你可以use the form in your template

hello.html的

<html>
<body>

<form action="" method="post">{% csrf_token %}
{{ form.as_p }}
<input type="submit" value="Submit">
</form>
</body>
</html>

答案 1 :(得分:1)

如何使用ModelChoiceField?这段代码适合我。

views.py:

from django import forms
from models import Zonas
from django.shortcuts import render_to_response


class NumbersForm(forms.Form):
    numbers = forms.ModelChoiceField(queryset=Zonas.objects.all())


def menuForm(request):
    form = NumbersForm()
    return render_to_response('hello.html', {'form': form})

hello.html的:

    

<form action="" method="get">
    <div class="field">

        {{ form.as_p }}

    </div>
    <input type="submit" value="Submit">
</form>
</body>
</html>

答案 2 :(得分:1)

您的应用程序中有几个错误。让我们来做以下事情:

您需要testApp文件夹中的以下文件:models.pyviews.pyforms.py。现在,在models.py内你将定义模型Zonas(就像你做的那样)

#models.py
from django.db import models

class Zonas(models.Model):
    name = models.CharField(max_length=30)
    def __unicode__(self):
        return self.name

现在,在forms.py文件中,您将拥有以下内容:

from testApp.models import Zonas
from django.forms import ModelForm

z = ((zona.name,zona.name) for zona in Zonas.objects.all())

class ZonasForm(ModelForm):
    name = forms.CharField(max_length=30,widget=forms.Select(choices=z))
    class Meta:
        model = Zonas

然后,您的views.py

from testApp.forms import ZonasForm
from django.shortcuts import render_to_response

def menuForm (request):
    if request.method = 'POST':
        form = ZonasForm(request.POST)
        if form.is_valid():
            form.save()
    else:
        form = ZonasForm()
    return render_to_response('hello.html', {'form':form})

你已经处理好你的表格了。

接下来,您的hello.html

<form action="" method="post">
    {% csrf_token %}
    <div class="field">

         {{ form.as_p }}

    </div>
    <input type="submit" value="Submit">
</form>
</body>

所有这些结合应该有效。您的应用定义中存在一些概念错误,我希望这可以作为指导。