raise formencode.Invalid(_('This username is not valid'),

                                     value, state)

        finally:

            meta.Session.remove()

        return self.user_db.user_id

def ValidRepoName(edit, old_data):

    class _ValidRepoName(formencode.validators.FancyValidator):

        def to_python(self, value, state):

            slug = repo_name_slug(value)

            if slug in ['_admin']:

                raise formencode.Invalid(_('This repository name is disallowed'),

                                         value, state)

            if old_data.get('repo_name') != value or not edit:

                if RepoModel().get_by_repo_name(slug, cache=False):

                    raise formencode.Invalid(_('This repository already exists') ,

                                             value, state)

            return slug

    return _ValidRepoName

def ValidForkType(old_data):

    class _ValidForkType(formencode.validators.FancyValidator):

        def to_python(self, value, state):

            if old_data['repo_type'] != value:

            return value

    return _ValidForkType

class ValidPerms(formencode.validators.FancyValidator):

    messages = {'perm_new_member_name':_('This username or users group name'

                                         ' is not valid')}

    def to_python(self, value, state):

        perms_update = []

        perms_new = []

        #build a list of permission to update and new permission to create

        for k, v in value.items():

            #means new added member to permissions

            if k.startswith('perm_new_member'):

                new_perm = value.get('perm_new_member', False)

                new_member = value.get('perm_new_member_name', False)

                new_type = value.get('perm_new_member_type')

                if new_member and new_perm:

                    if (new_member, new_perm, new_type) not in perms_new:

                        perms_new.append((new_member, new_perm, new_type))

            elif k.startswith('u_perm_') or k.startswith('g_perm_'):

                member = k[7:]

                t = {'u':'user',

        password_confirmation = All(UnicodeString(strip=True, min=6, not_empty=True))

        active = StringBoolean(if_missing=False)

        name = UnicodeString(strip=True, min=1, not_empty=True)

        lastname = UnicodeString(strip=True, min=1, not_empty=True)

        email = All(Email(not_empty=True), UniqSystemEmail(old_data))

        chained_validators = [ValidPasswordsMatch, ValidPassword]

    return _RegisterForm

def PasswordResetForm():

    class _PasswordResetForm(formencode.Schema):

        allow_extra_fields = True

        filter_extra_fields = True

        email = All(ValidSystemEmail(), Email(not_empty=True))

    return _PasswordResetForm

def RepoForm(edit=False, old_data={}, supported_backends=BACKENDS.keys(),

             repo_groups=[]):

    class _RepoForm(formencode.Schema):

        allow_extra_fields = True

        filter_extra_fields = False

        repo_name = All(UnicodeString(strip=True, min=1, not_empty=True),

                        ValidRepoName(edit, old_data))

        repo_group = OneOf(repo_groups, hideList=True)

        repo_type = OneOf(supported_backends)

        description = UnicodeString(strip=True, min=1, not_empty=True)

        private = StringBoolean(if_missing=False)

        enable_statistics = StringBoolean(if_missing=False)

        enable_downloads = StringBoolean(if_missing=False)

        if edit:

            #this is repo owner

            user = All(Int(not_empty=True), ValidRepoUser)

        chained_validators = [ValidPerms]

    return _RepoForm

def RepoForkForm(edit=False, old_data={}, supported_backends=BACKENDS.keys()):

    class _RepoForkForm(formencode.Schema):

        allow_extra_fields = True

        filter_extra_fields = False

        fork_name = All(UnicodeString(strip=True, min=1, not_empty=True),

                        ValidRepoName(edit, old_data))

        description = UnicodeString(strip=True, min=1, not_empty=True)

        private = StringBoolean(if_missing=False)

        repo_type = All(ValidForkType(old_data), OneOf(supported_backends))

    return _RepoForkForm