'and must begin with alphanumeric '

                                           'character'), value, state)

    return _ValidUsername

def ValidUsersGroup(edit, old_data):

    class _ValidUsersGroup(formencode.validators.FancyValidator):

        def validate_python(self, value, state):

            if value in ['default']:

                raise formencode.Invalid(_('Invalid group name'), value, state)

            #check if group is unique

            old_ugname = None

            if edit:

                old_ugname = UsersGroup.get(

                            old_data.get('users_group_id')).users_group_name

            if old_ugname != value or not edit:

                if UsersGroup.get_by_group_name(value, cache=False,

                                               case_insensitive=True):

                    raise formencode.Invalid(_('This users group '

                                               'already exists') , value,

                                             state)

            if re.match(r'^[a-zA-Z0-9]{1}[a-zA-Z0-9\-\_\.]+$', value) is None:

                raise formencode.Invalid(_('Group name may only contain '

                                           'alphanumeric characters '

                                           'underscores, periods or dashes '

                                           'and must begin with alphanumeric '

                                           'character'), value, state)

    return _ValidUsersGroup

def ValidReposGroup(edit, old_data):

    class _ValidReposGroup(formencode.validators.FancyValidator):

        def validate_python(self, value, state):

            #TODO WRITE VALIDATIONS

            group_name = value.get('group_name')

            group_parent_id = int(value.get('group_parent_id') or - 1)

            # slugify repo group just in case :)

            slug = repo_name_slug(group_name)

            # check for parent of self

                    e_dict = {'group_parent_id':_('Cannot assign this group '

                                                  'as parent')}

                    raise formencode.Invalid('', value, state,

                                             error_dict=e_dict)

            old_gname = None

            if edit:

                old_gname = Group.get(

                            old_data.get('group_id')).group_name

            if old_gname != group_name or not edit:

                # check filesystem

                gr = Group.query().filter(Group.group_name == slug)\

                    .filter(Group.group_parent_id == group_parent_id).scalar()

                if gr:

                    e_dict = {'group_name':_('This group already exists')}

                    raise formencode.Invalid('', value, state,

                                             error_dict=e_dict)

    return _ValidReposGroup

class ValidPassword(formencode.validators.FancyValidator):

    def to_python(self, value, state):

        if value:

            if value.get('password'):

                try:

                    value['password'] = get_crypt_password(value['password'])

                except UnicodeEncodeError:

                    e_dict = {'password':_('Invalid characters in password')}

                    raise formencode.Invalid('', value, state, error_dict=e_dict)

            if value.get('password_confirmation'):

                try:

                    value['password_confirmation'] = \

                        get_crypt_password(value['password_confirmation'])

                except UnicodeEncodeError:

                    e_dict = {'password_confirmation':_('Invalid characters in password')}

                    raise formencode.Invalid('', value, state, error_dict=e_dict)

            if value.get('new_password'):

                try:

                    value['new_password'] = \

                        get_crypt_password(value['new_password'])

                except UnicodeEncodeError:

</%def>

<%def name="main()">

<div class="box">

    <!-- box / title -->

    <div class="title">

        ${self.breadcrumbs()}

        <ul class="links">

          <li>

            <span>${h.link_to(u'ADD NEW GROUP',h.url('new_repos_group'))}</span>

          </li>          

        </ul>        

    </div>

    <!-- end box / title -->

    <div class="table">

           % if c.groups:

            <table class="table_disp">

                <thead>

                    <tr>

                        <th class="left"><a href="#">${_('Group name')}</a></th>

                        <th class="left"><a href="#">${_('Description')}</a></th>

                        <th class="left"><a href="#">${_('Number of repositories')}</a></th>

                        <th class="left">${_('action')}</th>

                    </tr>

                </thead>

                ## REPO GROUPS

                % for gr in c.groups:

                  <tr>

                      <td>

                          <div style="white-space: nowrap">

                          <img class="icon" alt="${_('Repositories group')}" src="${h.url('/images/icons/database_link.png')}"/>

                          ${h.link_to(h.literal(' » '.join([g.group_name for g in gr.parents+[gr]])),url('edit_repos_group',id=gr.group_id))}

                          </div>

                      </td>

                      <td>${gr.group_description}</td>

                      <td><b>${gr.repositories.count()}</b></td>

		               <td>

		                 ${h.form(url('repos_group', id=gr.group_id),method='delete')}

		                   ${h.submit('remove_%s' % gr.group_name,'delete',class_="delete_icon action_button",onclick="return confirm('Confirm to delete this group');")}

		                 ${h.end_form()}

		               </td>                      

                  </tr>

                % endfor

            </table>

            % else:

            % endif

    </div>

</div> 

</%def>