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POdjango forms.ModelForm validation problem
 

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  1. POdjango forms.ModelForm validation problem
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    <p>I have a model with some fields.</p> <p>I have a model form that represents a portion of the above model. I have to do some custom validation. Some fields depend on others. Password and password confirm fields must be the same for example. Its tied to a back end system.</p> <p>I must check the login name ( ensure its not in the back end system and its not in the database for this project ). I must validate the length and so on.</p> <p>I must then validate the password against the constraints set in the back end. I need to use an API for this. I must pass the login name in with the password to use this command ( its silly but I cannot change it. )</p> <p>If the login name raised a validation error in its method then the password validation methid cannot use sel.cleaned_data['login']</p> <p>here is the code.</p> <pre><code>class PEMUserDetails(models.Model): #Keys and IDs domain = models.OneToOneField('GIBOSite', primary_key=True) domain_name = models.CharField(unique=True, max_length=100) # Details PEM_login_id = models.CharField(max_length=32, unique=True) PEM_password = models.CharField(max_length=32) PEM_password_confirm = models.CharField(max_length=32) FTP_login = models.CharField(max_length=32, blank=True, null=True) FTP_password = models.CharField(max_length=32, blank=True, null=True) FTP_host_name = models.CharField(max_length=256, blank=True, null=True) def __unicode__(self): return self.domain_name def link_to(self, gibo_site): self.domain = gibo_site self.domain_name = gibo_site.domain class PEMUserDetailsForm(forms.ModelForm): PEM_password = forms.CharField(widget=forms.PasswordInput) PEM_password_confirm = forms.CharField(widget=forms.PasswordInput) class Meta: model = PEMUserDetails exclude = ('domain', 'domain_name', 'FTP_login', 'FTP_password', 'FTP_host_name') def clean_PEM_login_id(self): login = self.cleaned_data['PEM_login_id'] try: g = PEMUserDetails.objects.get(PEM_login_id=login) raise forms.ValidationError("This Login ID is already taken, please choose another.") except PEMUserDetails.DoesNotExist: p = PBA() pem_account = p.BM.UserValidate_API(login) if pem_account['AccountID'] == 0: pass else: raise forms.ValidationError("This Login ID is already taken, please choose another.") validation = p.BM.GetLoginSettings_API() m = re.match(validation['ManualLoginMask'], login) if m == None: raise forms.ValidationError(validation['LoginAlert']) valid_login = (login == m.group(0)) if len(login) &gt; validation['LoginMinLength'] and len(login) &lt; validation['LoginMaxLength'] and valid_login: pass else: raise forms.ValidationError(validation['LoginAlert']) return login def clean_PEM_password(self): p = PBA() login = self.cleaned_data['PEM_login_id'] password = self.cleaned_data['PEM_password'] validation = p.BM.GetLoginSettings_API() if len(password) &gt; validation['PwdMinLength']: pass else: raise forms.ValidationError("Password must be more than %s characters long" % validation['PwdMinLength']) passwd_status = p.BM.UserForVendorValidate_API(login, password) if passwd_status['passwordStrength'] == '': pass else: raise forms.ValidationError(passwd_status['passwordStrength']) return password def clean_PEM_password_confirm(self): p = self.cleaned_data['PEM_password'] c = self.cleaned_data['PEM_password_confirm'] if c == p: pass else: raise forms.ValidationError("The passwords you submitted do not match") return c </code></pre> <p>I got around this by using a regular form and matched it to the model class. Its sort of running away from the problem. Is this a limitation of modelforms in django 1.1</p> <p>python shell shows this</p> <pre><code>Python 2.6.5 (r265:79063, Apr 16 2010, 13:57:41) [GCC 4.4.3] on linux2 Type "help", "copyright", "credits" or "license" for more information. (InteractiveConsole) &gt;&gt;&gt; from gibo.deployment.models import PEMUserDetailsForm &gt;&gt;&gt; from django.http import QueryDict &gt;&gt;&gt; post = QueryDict("PEM_login_id=beefsupreme&amp;PEM_password=beef1234&amp;PEM_password_confirm=beef123") &gt;&gt;&gt; f = PEMUserDetailsForm(post) &gt;&gt;&gt; f.is_valid() Traceback (most recent call last): File "&lt;console&gt;", line 1, in &lt;module&gt; File "/usr/lib/pymodules/python2.6/django/forms/forms.py", line 120, in is_valid return self.is_bound and not bool(self.errors) File "/usr/lib/pymodules/python2.6/django/forms/forms.py", line 111, in _get_errors self.full_clean() File "/usr/lib/pymodules/python2.6/django/forms/forms.py", line 243, in full_clean value = getattr(self, 'clean_%s' % name)() File "/home/niall/public_html/projects/GIBO/dev/projects/signup/gibo/../gibo/deployment/models.py", line 776, in clean_PEM_password login = self.cleaned_data['PEM_login_id'] KeyError: 'PEM_login_id' &gt;&gt;&gt; post = QueryDict("PEM_login_id=beefsupremexxc&amp;PEM_password=beef1234&amp;PEM_password_confirm=beef123") &gt;&gt;&gt; f = PEMUserDetailsForm(post) &gt;&gt;&gt; f.is_valid() Traceback (most recent call last): File "&lt;console&gt;", line 1, in &lt;module&gt; File "/usr/lib/pymodules/python2.6/django/forms/forms.py", line 120, in is_valid return self.is_bound and not bool(self.errors) File "/usr/lib/pymodules/python2.6/django/forms/forms.py", line 111, in _get_errors self.full_clean() File "/usr/lib/pymodules/python2.6/django/forms/forms.py", line 243, in full_clean value = getattr(self, 'clean_%s' % name)() File "/home/niall/public_html/projects/GIBO/dev/projects/signup/gibo/../gibo/deployment/models.py", line 791, in clean_PEM_password_confirm p = self.cleaned_data['PEM_password'] KeyError: 'PEM_password' &gt;&gt;&gt; f.errors {'PEM_password': [u'Password is based on personal information.']} &gt;&gt;&gt; </code></pre> <p>but it works this way</p> <pre><code>Python 2.6.5 (r265:79063, Apr 16 2010, 13:57:41) [GCC 4.4.3] on linux2 Type "help", "copyright", "credits" or "license" for more information. (InteractiveConsole) &gt;&gt;&gt; from gibo.deployment.models import PEMUserDetailsForm &gt;&gt;&gt; from django.http import QueryDict &gt;&gt;&gt; post = QueryDict("PEM_login_id=beefsupreme&amp;PEM_password=beef1234&amp;PEM_password_confirm=beef123") &gt;&gt;&gt; f = PEMUserDetailsForm(post) &gt;&gt;&gt; f.errors Traceback (most recent call last): File "&lt;console&gt;", line 1, in &lt;module&gt; File "/usr/lib/pymodules/python2.6/django/forms/forms.py", line 111, in _get_errors self.full_clean() File "/usr/lib/pymodules/python2.6/django/forms/forms.py", line 243, in full_clean value = getattr(self, 'clean_%s' % name)() File "/home/niall/public_html/projects/GIBO/dev/projects/signup/gibo/../gibo/deployment/models.py", line 777, in clean_PEM_password login = self.cleaned_data['PEM_login_id'] KeyError: 'PEM_login_id' &gt;&gt;&gt; f.errors {'PEM_login_id': [u'This Login ID is already taken, please choose another.']} &gt;&gt;&gt; f.is_valid() False &gt;&gt;&gt; </code></pre>
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