我创建了一个自定义 SelectMultiple 小部件,用于显示对象详细信息以及一个用于在表单仍称为 newforms 时进行选择的复选框 - 它似乎仍然有效:
from django.forms import CheckboxInput, SelectMultiple
from django.utils.encoding import force_unicode
from django.utils.html import escape
from django.utils.safestring import mark_safe
class TableSelectMultiple(SelectMultiple):
"""
Provides selection of items via checkboxes, with a table row
being rendered for each item, the first cell in which contains the
checkbox.
When providing choices for this field, give the item as the second
item in all choice tuples. For example, where you might have
previously used::
field.choices = [(item.id, item.name) for item in item_list]
...you should use::
field.choices = [(item.id, item) for item in item_list]
"""
def __init__(self, item_attrs, *args, **kwargs):
"""
item_attrs
Defines the attributes of each item which will be displayed
as a column in each table row, in the order given.
Any callables in item_attrs will be called with the item to be
displayed as the sole parameter.
Any callable attribute names specified will be called and have
their return value used for display.
All attribute values will be escaped.
"""
super(TableSelectMultiple, self).__init__(*args, **kwargs)
self.item_attrs = item_attrs
def render(self, name, value, attrs=None, choices=()):
if value is None: value = []
has_id = attrs and 'id' in attrs
final_attrs = self.build_attrs(attrs, name=name)
output = []
str_values = set([force_unicode(v) for v in value]) # Normalize to strings.
for i, (option_value, item) in enumerate(self.choices):
# If an ID attribute was given, add a numeric index as a suffix,
# so that the checkboxes don't all have the same ID attribute.
if has_id:
final_attrs = dict(final_attrs, id='%s_%s' % (attrs['id'], i))
cb = CheckboxInput(final_attrs, check_test=lambda value: value in str_values)
option_value = force_unicode(option_value)
rendered_cb = cb.render(name, option_value)
output.append(u'<tr><td>%s</td>' % rendered_cb)
for attr in self.item_attrs:
if callable(attr):
content = attr(item)
elif callable(getattr(item, attr)):
content = getattr(item, attr)()
else:
content = getattr(item, attr)
output.append(u'<td>%s</td>' % escape(content))
output.append(u'</tr>')
return mark_safe(u'\n'.join(output))
表格示例:
class JobSelectionForm(forms.Form):
jobs = forms.MultipleChoiceField(widget=TableSelectMultiple(
item_attrs=('formatted_number', 'name', 'client', 'get_status_display')))
def __init__(self, accessible_jobs, *args, **kwargs):
super(JobSelectionForm, self).__init__(*args, **kwargs)
self.fields['jobs'].choices = [(j.id, j) \
for j in accessible_jobs]
使用上面的表单,在实例化表单对象时,您将传递要显示的项目列表作为第一个参数。
模板:
{% if form.jobs.errors %}{{ form.jobs.errors }}{% endif %}
<table>
<thead>
<tr>
<th> </th>
<th>Number</th>
<th>Name</th>
<th>Client</th>
<th>Status</th>
</tr>
</thead>
<tbody>
{{ form.jobs }}
</tbody>
</table>