Submitted By: Mario Fetka (mario dot fetka at gmail dot com)
Date: 2009-02-18
Initial Package Version: unknown
Origin: http://trac-hacks.org/wiki/RegistrationConfirmationPatch
Upstream Status: unknown
Description: This is a patch for AccountManagerPlugin that adds an
IRegistrationConfirmation extension point that enables pluggable
verifications for new user registration.
 
diff -Naur trac-acct_mgr-0.2.1.orig/acct_mgr/api.py trac-acct_mgr-0.2.1/acct_mgr/api.py
--- trac-acct_mgr-0.2.1.orig/acct_mgr/api.py	2009-02-18 09:10:33.000000000 +0000
+++ trac-acct_mgr-0.2.1/acct_mgr/api.py	2009-02-18 09:42:33.254276668 +0000
@@ -77,6 +77,19 @@
         """User deleted
         """
 
+class IRegistrationConfirmation(Interface):
+    """An interface for receiving notification before and after the new user 
+    registration form has been submitted.
+    """
+
+    def pre_registration(self, req):
+        """Returns the markup to be added to the registration form
+        """
+
+    def verify_registration(self, req):
+        """Returns an error message if confirmation fails, or None on success
+        """
+
 class AccountManager(Component):
     """The AccountManager component handles all user account management methods
     provided by the IPasswordStore interface.
diff -Naur trac-acct_mgr-0.2.1.orig/acct_mgr/templates/register.html trac-acct_mgr-0.2.1/acct_mgr/templates/register.html
--- trac-acct_mgr-0.2.1.orig/acct_mgr/templates/register.html	2009-02-18 09:10:33.000000000 +0000
+++ trac-acct_mgr-0.2.1/acct_mgr/templates/register.html	2009-02-18 09:42:33.256586814 +0000
@@ -43,6 +43,11 @@
                      class="textwidget" size="20" />
             </label>
           </div>
+	  <py:if test="extra_required_content">
+	  <div>
+	    ${Markup(extra_required_content)}
+	  </div>
+	  </py:if>
         </fieldset>
         <fieldset>
           <legend>Optional</legend>
diff -Naur trac-acct_mgr-0.2.1.orig/acct_mgr/web_ui.py trac-acct_mgr-0.2.1/acct_mgr/web_ui.py
--- trac-acct_mgr-0.2.1.orig/acct_mgr/web_ui.py	2009-02-18 09:10:33.000000000 +0000
+++ trac-acct_mgr-0.2.1/acct_mgr/web_ui.py	2009-02-18 09:45:45.904094348 +0000
@@ -27,6 +27,7 @@
 from genshi.builder import tag
 
 from api import AccountManager
+from api import IRegistrationConfirmation
 from acct_mgr.util import urandom
 
 def _create_user(req, env, check_permissions=True):
@@ -351,6 +352,8 @@
 
     implements(INavigationContributor, IRequestHandler, ITemplateProvider)
 
+    listeners = ExtensionPoint(IRegistrationConfirmation)
+
     def __init__(self):
         self._enable_check(log=True)
 
@@ -394,26 +397,42 @@
                               'name' : None,
                               'email' : None,
                             },
+                'extra_required_content' : self._get_extra_content(req)
                 }
+        error = None
         if req.method == 'POST' and action == 'create':
-            try:
-                _create_user(req, self.env)
-            except TracError, e:
-                data['registration_error'] = e.message
+            for listener in self.listeners:
+                error  = listener.verify_registration(req)
+                if error is not None:
+                    break
+            data['registration_error'] = error
+            if error is None:
+                try:
+                    _create_user(req, self.env)
+                except TracError, e:
+                    data['registration_error'] = e.message
                 formdata = getattr(e, 'acctmgr', None)
                 if formdata:
                     data['acctmgr'] = formdata
                 else:
                     raise e
-            else:
-                req.redirect(req.href.login())
+                else:
+                    req.redirect(req.href.login())
+
         data['reset_password_enabled'] = \
             (self.env.is_component_enabled(AccountModule)
              and NotificationSystem(self.env).smtp_enabled)
 
         return 'register.html', data, None
 
-
+    def _get_extra_content(self, req):
+        ret = ""
+        for listener in self.listeners:
+            response = listener.pre_registration(req)
+            if response is not None:
+                ret += response
+        return ret
+                
     # ITemplateProvider
 
     def get_htdocs_dirs(self):
@@ -427,7 +446,7 @@
         ClearSilver templates.
         """
         from pkg_resources import resource_filename
-        return [resource_filename(__name__, 'templates')]
+        return [resource_filename(__name__, 'templates')] 
 
 
 def if_enabled(func):