Python 扩展表单。选择多个而不丢失值
我有一个模型表单,我正在为其编写一个自定义小部件,以替换多对多表单。请使用jQuery FCBKcomplete小部件选择多个字段。虽然multiselect元素的替换工作正常,但它不再为multiselect提取选项 这是我的小部件:Python 扩展表单。选择多个而不丢失值,python,django,django-forms,Python,Django,Django Forms,我有一个模型表单,我正在为其编写一个自定义小部件,以替换多对多表单。请使用jQuery FCBKcomplete小部件选择多个字段。虽然multiselect元素的替换工作正常,但它不再为multiselect提取选项 这是我的小部件: class FCBKcompleteWidget(forms.SelectMultiple): def _media(self): return forms.Media(js=(reverse('appstatic',
class FCBKcompleteWidget(forms.SelectMultiple):
def _media(self):
return forms.Media(js=(reverse('appstatic',
args=['js/jquery.fcbkcomplete.min.js']),
reverse('appstatic',
args=['js/init-fcbkcomplete.js'])),
css={'all': (reverse('appstatic',
args=['css/jquery.fcbkcomplete'
'.css']),)})
media = property(_media)
这是我的表格:
class BlogForm(forms.ModelForm):
class Meta(object):
model = models.Blog
exclude = ('slug',)
def __init__(self, *args, **kwargs):
super(BlogForm, self).__init__(*args, **kwargs)
self.fields['description'].widget = TinyMCEWidget()
fcbkcomplete_fields = ['categories', 'admins', 'editors']
for field in fcbkcomplete_fields:
self.fields[field].widget = FCBKcompleteWidget()
以下是我的模型:
class Category(models.Model):
"""A blog category"""
title = models.CharField(max_length=128)
slug = models.SlugField()
class Meta(object):
verbose_name_plural = u'Categories'
def __unicode__(self):
return self.title
@models.permalink
def get_absolute_url(self):
return ('category', (), {'slug': self.slug})
class Blog(models.Model):
"""A blog"""
title = models.CharField(max_length=128)
slug = models.SlugField(unique=True)
description = models.TextField()
categories = models.ManyToManyField(Category, related_name='blogs')
shared = models.BooleanField()
admins = models.ManyToManyField(User, related_name='blog_admins')
editors = models.ManyToManyField(User, related_name='blog_editors')
def __unicode__(self):
return self.title
@models.permalink
def get_absolute_url(self):
return ('blog', (), {'slug': self.slug})
以下是生成的HTML:
<div class="field">
<label for="name">Categories</label>
<select multiple="multiple" name="categories" id="id_categories">
</select>
<div class="help-text">trimmed for readability</div>
</div>
<div class="field">
<label for="name">Admins</label>
<select multiple="multiple" name="admins" id="id_admins">
</select>
<div class="help-text">trimmed for readability</div>
</div>
<div class="field">
<label for="name">Editors</label>
<select multiple="multiple" name="editors" id="id_editors">
</select>
<div class="help-text">trimmed for readability</div>
</div>
类别
为可读性而修剪
管理员
为可读性而修剪
编辑
为可读性而修剪
正如您所看到的,没有一个选项将其添加到multiselect元素中。以下是我不使用自定义小部件替换小部件时生成的HTML:
<div class="field">
<label for="name">Categories</label>
<select multiple="multiple" name="categories" id="id_categories">
<option value="1" selected="selected">Good Stuff</option>
</select>
<div class="help-text">trimmed</div>
</div>
<div class="field">
<label for="name">Admins</label>
<select multiple="multiple" name="admins" id="id_admins">
<option value="2" selected="selected">username</option>
<option value="3">some username</option>
<option value="4">another username</option>
</select>
<div class="help-text">trimmed</div>
</div>
<div class="field">
<label for="name">Editors</label>
<select multiple="multiple" name="editors" id="id_editors">
<option value="2" selected="selected">username</option>
<option value="3">some username</option>
<option value="4">another username</option>
</select>
<div class="help-text">trimmed</div>
</div>
类别
好东西
修剪
管理员
用户名
一些用户名
另一个用户名
修剪
编辑
用户名
一些用户名
另一个用户名
修剪
有没有人对为什么这些选项没有通过widget替换过程提出任何建议?任何帮助都将不胜感激。一年过去了,但即使使用当前的django版本,答案也可能很有价值 这种行为的原因似乎是fcbk字段缺少CHOICES属性 只要把选择推到表单上就行了
class EmailSubscriptionFilterForm(forms.ModelForm):
class Meta:
model = EmailSubscription
exclude = ('dsts',)
def loc_name(self, id):
return Location.objects.get(id = id).name
def __init__(self, *args, **kwargs):
super(EmailSubscriptionFilterForm, self).__init__(*args, **kwargs)
fcbkcomplete_fields = ['orgs']
for field in fcbkcomplete_fields:
self.fields[field].widget = MultiOriginSelect()
if args:
self.fields['orgs'].choices = ([(int(o), self.loc_name(int(o))) for o in args[0].getlist('orgs')] )
对于init,它会将POST请求附带的所有选项添加到选择主体。由于表单是ModelForm,因此代码模型将非常有用。您解决了这个问题吗?我也有一个类似的问题,我最终只是在表单的init语句中手动提取值,并向字段提供选项。它很难看,而且绝对不是完美的,但在大多数情况下都有效。现在,我正在使用jQuery插件。