Linux django 表单下拉数字列表
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django form dropdown list of numbers
提问by krisdigitx
i am new to django and i want to make a simple form, according to the doc i can make a form using forms module from django
我是 django 的新手，我想制作一个简单的表单，根据文档，我可以使用 django 的表单模块制作表单
from django import forms
class CronForm(forms.Form):
name = forms.CharField(max_length=100)
email = forms.EmailField(required=False, label='Your e-mail address')
message = forms.CharField(widget=forms.Textarea)
def clean_message(self):
message = self.cleaned_data['message']
num_words = len(message.split())
if num_words < 4:
raise forms.ValidationError("Not enough words!")
return message
what i want to know is how to create a dropdown list of days in month i.e from 1 to 31?
我想知道的是如何创建一个月中的天数下拉列表，即从 1 到 31？
some have done it using javascript in their form template, can this be done in django?
有些人在他们的表单模板中使用 javascript 完成了它，这可以在 django 中完成吗？
采纳答案by Yuji 'Tomita' Tomita
You're looking for a ChoiceFieldwhich renders as a selecthtml element by default.
https://docs.djangoproject.com/en/dev/ref/forms/fields/#choicefield
您正在寻找默认ChoiceField呈现为selecthtml 元素的 。
https://docs.djangoproject.com/en/dev/ref/forms/fields/#choicefield
class CronForm(forms.Form):
days = forms.ChoiceField(choices=[(x, x) for x in range(1, 32)])
回答by Arthur Kamau
you can start by choosing to render the fields manualy. A simple example:-
您可以从选择手动渲染字段开始。一个简单的例子：-
{% for field in form %}
<div class="fieldWrapper">
{{ field.errors }}
{{ field.label_tag }} {{ field }}
{% if field.help_text %}
<p class="help">{{ field.help_text|safe }}</p>
{% endif %}
</div>
{% endfor %}
This will render the form without any styling then you have to apply the relevent class to create a drop down list(copied from w3c dropdown css):-
这将呈现没有任何样式的表单，然后您必须应用相关类来创建下拉列表（从 w3c 下拉 css 复制）：-
<div class="dropdown">
<button class="btn btn-default dropdown-toggle" type="button" id="menu1" data-toggle="dropdown">Tutorials
<span class="caret"></span></button>
<ul class="dropdown-menu" role="menu" aria-labelledby="menu1">
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">HTML</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">CSS</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">JavaScript</a></li>
<li role="presentation" class="divider"></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">About Us</a></li>
</ul>
</div>
</div>
combining the two :-
结合两者：-
<div class="dropdown">
<button class="btn btn-default dropdown-toggle" type="button" id="menu1" data-toggle="dropdown">Days
<span class="caret"></span></button>
<div class="fieldWrapper">
<ul class="dropdown-menu" role="menu" aria-labelledby="menu1">
{% for field in form %}
<li class="fieldWrapper">
{{ field.errors }}
{{ field.label_tag }} {{ field }}
{% if field.help_text %}
<p class="help">{{ field.help_text|safe }}</p>
{% endif %}
</li>
{% endfor %}
</ul>
</div>
</div>
