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POwtforms Form class subclassing and field ordering
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  1. POwtforms Form class subclassing and field ordering
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    copied!<p>I have a UserForm class:</p> <pre><code>class UserForm(Form): first_name = TextField(u'First name', [validators.Required()]) last_name = TextField(u'Last name', [validators.Required()]) middle_name = TextField(u'Middle name', [validators.Required()]) username = TextField(u'Username', [validators.Required()]) password = TextField(u'Password', [validators.Required()], widget=PasswordInput()) email = TextField(u'Email', [validators.Optional(), validators.Email()]) </code></pre> <p>and want to make the password field Optional in UpdateUserForm:</p> <pre><code>class UpdateUserForm(UserForm): password = TextField(u'Password', [validators.Optional()], widget=PasswordInput()) </code></pre> <p>But the password field is placed after the email field, not before.</p> <p>How do I preserve field order when subclassing?</p> <p>Additionally, when I try to change the password field validators it doesn't work - password still Required :/ Why?</p> <pre><code>class UpdateUserForm(UserForm): def __init__(self, **kwargs): self.password.validators = [validators.Optional()] super(UpdateUserForm, self).__init__(**kwargs) </code></pre> <p>or</p> <pre><code>class UpdateUserForm(UserForm): def __init__(self, **kwargs): self.password = TextField(u'Password', [validators.Optional()], widget=PasswordInput()) super(UpdateUserForm, self).__init__(**kwargs) </code></pre> <h3>Some thoughts...</h3> <pre><code>class UpdateUserForm(UserForm): def __init__(self, formdata=None, obj=None, prefix='', **kwargs): self._unbound_fields[4][1] = TextField(u'Password', [validators.Optional()], widget=PasswordInput()) UserForm.__init__(self, formdata=None, obj=None, prefix='', **kwargs) </code></pre> <p>Finally, what I need:</p> <pre><code>class UpdateUserForm(UserForm): def __init__(self, formdata=None, obj=None, prefix='', **kwargs): UserForm.__init__(self, formdata, obj, prefix, **kwargs) self['password'].validators = [validators.Optional()] self['password'].flags.required = False </code></pre>
 

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