wtforms Form class subclassing and field ordering

Question

I have a UserForm class:

class UserForm(Form):
    first_name = TextField(u\'First name\', [validators.Required()])
    last_name = TextField(u\'Last name\', [va         


        

Answer 1

This is how I accomplish what were you trying to do:

class UserForm(wtforms.Form):                                                   
    def __init__(self, *args, **kwargs):                                        
        super(UserForm,self).__init__(*args, **kwargs)                          

        if kwargs.get('update', None):                                          
            self['passwd'].validators.append(wtforms.validators.Optional())
            self['passwd'].flags.required = False     
        else:                                                                   
            self['passwd'].validators.append(wtforms.validators.Required()) 

    passwd = UnicodeField(                                                      
        u'Password',                                                            
        [                                                                       
            wtforms.validators.length(max=50),                                  
            wtforms.validators.EqualTo(                                         
                'confirm',                                                      
                message='Passwords must match'                                  
                )                                                               
            ],                                                                  
        widget = wtforms.widgets.PasswordInput()                                
        )                                                                       

    confirm = wtforms.PasswordField(u'Password Verify')

Then, when I instantiate the UserForm, I pass update=True when editing. This appears to work for me.