Question

我们有以下表单，我们正在尝试为每个组创建GroupRoleForms列表。

class FullNameMixIn():
    full_name = TextField(
        'Full name', [
            validators.required(message=u"Full name is required")
        ])

class GroupRoleForm(Form):
    group =BooleanField('Group', default=False)
    role = SelectField(
            'Role',choices=[
            ("none", "----------"), 
            ('approver', 'Approver'),
            ('editor', 'Editor')
            ])

class AdminEditUserForm(Form, FullNameMixIn):
    group_roles = FieldList(FormField(GroupRoleForm))

我们如何创建包含预先填充的AdminEditUserForm列表的GroupRoleForms个实例？

目前我们正试图这样做：

form = forms.AdminEditUserForm()
for group in  company.groups:
    group_role_form = forms.GroupRoleForm()
    group_role_form.group.label =  group.name
    group_role_form.group.name = group.id
    form.group_roles.append_entry(group_role_form)
return dict(edit_user_form = form )

Answer 1

说明

在data的{{1}}或formdata个关键字参数中，您只需要一个与Form匹配的字典，该字典与包含可迭代的key子字段匹配。该可迭代需要的项目依次具有与FieldList的字段列表匹配的属性。

如果你按照下面的例子我得到预先填充好的嵌套表格。

守则

FieldList

呈现的HTML（截断的）

from collections import namedtuple

from wtforms import validators
from wtforms import Form
from wtforms import SelectField
from wtforms import BooleanField
from wtforms import TextField
from wtforms import FieldList
from wtforms import FormField

from webob.multidict import MultiDict

# OP's Code
class FullNameMixIn():
    full_name = TextField(
        'Full name', [
            validators.required(message=u"Full name is required")
        ])

class GroupRoleForm(Form):
    group =BooleanField('Group', default=False)
    role = SelectField(
            'Role',choices=[
            ("none", "----------"), 
            ('approver', 'Approver'),
            ('editor', 'Editor')
            ])

class AdminEditUserForm(Form, FullNameMixIn):
    group_roles = FieldList(FormField(GroupRoleForm))

# create some groups
Group = namedtuple('Group', ['group', 'role'])
g1 = Group('group-1', 'none')
g2 = Group('group-2', 'none')

# drop them in a dictionary 
data_in={'group_roles': [g1, g2]}

# Build form 
test_form = AdminEditUserForm(data=MultiDict(data_in))

# test print
print test_form.group_roles()

Answer 2

我对这些包不熟悉，但我会采取刺：

class AdminEditUserForm(Form, FullNameMixIn):
    def __init__(self, groups):
        super(AdminEditUserForm, self).__init__()
        self.group_roles = FieldList(FormField(GroupRoleForm))
        for group in groups:
            self.group.label = group.name
            self.group.name = group.id
            self.group_roles.append_entry(self.group)  
            # If this doesn't create a copy of the GroupRoleForm 
            # superclass in group_roles, then you need a method to do it
            self.__clear_group()

    def __clear_group(self):
        # copy GroupRoleForm object, if needed
        # delete GroupRoleForm object
        ...

然后你可以这样称呼它：

form = forms.AdminEditUserForm(company.groups)

使用FieldList和FormField

2 个答案:

说明

守则

呈现的HTML（截断的）