django怎么添加表单（Django表单）

本篇文章给大家谈谈django怎么添加表单，以及Django表单对应的知识点，希望对各位有所帮助，不要忘了收藏本站喔。

本文目录一览：

1. formsets是同一个model的组合，而这里是两个model，(Book和Author)

2. django的form如果用后台渲染的话，是在生成form的时候就确定了form里面的字段，哪怕是动态生成，而这里的需求是前台(js)动态修改form里面的字段(增删字段)

目前我的解决方案是 自己写html模板，已经放弃了form表单，然后ajax传入后台，自己解析，保存。

话说你为什么一定要把表里的内容通过get提交呢，一点也不安全。实际开发几乎没人这么干，特别是这种私人信息。但是也有招能搞定。你在input中添加一个onclick='tijiao();'

js中加一个方法

function tijiao(){

window.href='url?'+encodeURIComponent(你想提交的form表单信息)+''+encodeURIComponent(你想提交的form表单信息);

}

若不想跳转页面请用ajax，参数也要加密

encodeURIComponent是将敏感信息加密。你可以在url这个路径的页面上通过decodeURIComponent解码就行了

望采纳哦

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from django.utils.translation import ugettext_lazy as _

from django import forms

from django.forms.formsets import BaseFormSet

from django.forms.fields import FileField

from django.forms.util import ValidationError

from django.shortcuts import render_to_response

from django.contrib.formtools.wizard import FormWizard

from ddtcms.office.equipment.models import Equipment,Characteristic,CharacteristicValue

class EquipmentForm(forms.ModelForm):

class Meta:

model = Equipment

class CharacteristicValueForm(forms.Form):

def clean(self):

a=self.fields

s=self.data

self.cleaned_data = {}

# 下面的这一段for 是从 django的forms.py中的 full_clean 中复制来的

for name, field in self.fields.items():

# value_from_datadict() gets the data from the data dictionaries.

# Each widget type knows how to retrieve its own data, because some

# widgets split data over several HTML fields.

value = field.widget.value_from_datadict(self.data, self.files, self.add_prefix(name))

try:

if isinstance(field, FileField):

initial = self.initial.get(name, field.initial)

value = field.clean(value, initial)

else:

value = field.clean(value)

self.cleaned_data[name] = value

if hasattr(self, 'clean_%s' % name):

value = getattr(self, 'clean_%s' % name)()

self.cleaned_data[name] = value

except ValidationError, e:

self._errors[name] = self.error_class(e.messages)

if name in self.cleaned_data:

del self.cleaned_data[name]

#cl=self.cleaned_data

#debug()调试用的,查看cl的值,主要是看self.cleaned_data的值,如果return了,就看不到了

return self.cleaned_data

class EquipmentCreateWizard(FormWizard):

def done(self, request, form_list):

return render_to_response('equipment/done.html',

{

'form_data': [form.cleaned_data for form in form_list],

})

def get_form(self, step, data=None):

"Helper method that returns the Form instance for the given step."

form = self.form_list[step](data, prefix=self.prefix_for_step(step), initial=self.initial.get(step, None))

if step == 1:

if data:

cg = data.get('0-category', 1)

cs = Characteristic.objects.all().filter(category__id=cg)

for c in cs:

form.fields['Characteristic-'+str(c.id)] = forms.CharField(label = c.name)

g=form.fields

#debug()

return form

# 从wizard.py中复制过来进行更改的.

def render(self, form, request, step, context=None):

"Renders the given Form object, returning an HttpResponse."

old_data = request.POST

prev_fields = []

if old_data:

hidden = forms.HiddenInput()

# Collect all data from previous steps and render it as HTML hidden fields.

for i in range(step):

old_form = self.get_form(i, old_data)

hash_name = 'hash_%s' % i

prev_fields.extend([bf.as_hidden() for bf in old_form])

prev_fields.append(hidden.render(hash_name, old_data.get(hash_name, self.security_hash(request, old_form))))

if step == 1:

cg = old_data.get('0-category', 1)

cs = Characteristic.objects.all().filter(category__id=cg)

for c in cs:

form.fields['Characteristic-'+str(c.id)] = forms.CharField(label = c.name)

g=form.fields

#debug()

if step == 2:

debug()

return super(EquipmentCreateWizard, self).render(form, request, step, context=None)

def get_template(self, step):

return 'equipment/wizard_%s.html' % step

EquipmentCreateWizard其实也可以放在views.py中,而且我觉得更合理一点.

在EquipmentCreateWizard 中,我试着修改过process_step 函数,但是得不到正确的结果,后来修改了get_form,都是想从django的formtools的wizard.py中复制过来再进行修改的.

get_form的修改也没有得到正确的结果.后来就修改render函数,在第2步的时候,我将动态参数个数显示出来了.但是到最后结束done的环节,取得的formdata中,第二个form没有数据,就是一个空的{},

于是我又重新修改get_form函数,无非就是判断是不是第二步,然后给第二个form动态添加几个field:

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if step == 1:

cg = old_data.get('0-category', 1)

cs = Characteristic.objects.all().filter(category__id=cg)

for c in cs:

form.fields['Characteristic-'+str(c.id)] = forms.CharField(label = c.name)

g=form.fields

#debug()

这段代码在get_form和 render中都有,都是判断是不是第2步,然后就根据第1步中选择的设备的分类来查询到具体的分类,再根据分类来获取该种分类的设备有哪些参数,然后根据参数个数修改form的参数field的个数.

'Characteristic-'+str(c.id)是用来以后保存数据的时候,split这个字符串,得到参数的id,并在参数值表中保存Characteristic-1,Characteristic-2...的value.

g=form.fields

#debug()

用来断点查看参数field有多少个,是否修改成功.

=========================

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from django.conf.urls.defaults import *

from ddtcms.office.equipment.forms import EquipmentForm,CharacteristicValueForm,EquipmentCreateWizard

urlpatterns = patterns('ddtcms.office.equipment.views',

url(r'^$', 'index', name="equipment_index"),

url(r'^add/$', 'equipment_create', name="equipment_create"),

url(r'^add-by-wizard/$',EquipmentCreateWizard([EquipmentForm, CharacteristicValueForm]), name="equipment_create_by_wizard"), )

以上代码,csdnbolg 自动过滤了 $符号,我加了上去,可能有不对的地方.

==========================

wizard_0.html

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{% block content %}

h2添加/修改设备向导/h2

p第 {{ step }} 步, 共 {{ step_count }} 步./p

p填写设备基本情况/p

form method="POST" action=""{% csrf_token %}

table

{{ form }}

/table

input type="hidden" name="{{ step_field }}" value="{{ step0 }}" /

{{ previous_fields|safe }}

input type="submit" value="Submit" /

/form

{% endblock %}

===================

wizard_1.html

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{% block content %}

h2添加/修改设备向导/h2

p第 {{ step }} 步, 共 {{ step_count }} 步./p

p填写设备参数, 如果没有要填写的内容, 请直接点击确定./p

form method="POST" action=""{% csrf_token %}

table

{{ form }}

/table

input type="hidden" name="{{ step_field }}" value="{{ step0 }}" /

{{ previous_fields|safe }}

input type="submit" value="Submit" /

/form

{% endblock %}

====================

done.html

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{% block content %}

h2添加/修改设备向导/h2

p您已经成功添加了一个设备./p

{{form_data}}

{% endblock %}

============

还可以用另外的form来实现formwizard,就是第一个form1,主要用来让用户选择设备的分类,form2就根据前面的来动态生成参数的表单.原理是一样的.

还有就是写2个view来模拟formwizard,第一个view增加一个设备,第二个view带设备id这个参数即可,可以很有效的增加设备的参数.

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