add id generation and validation

common/djangoapps/student/migrations/0022_add_more_fields_to_test_center_user.py

@@ -8,29 +8,15 @@ from django.db import models
 class Migration(SchemaMigration):
 
     def forwards(self, orm):
-        # Adding field 'TestCenterUser.upload_status'
-        db.add_column('student_testcenteruser', 'upload_status',
-                      self.gf('django.db.models.fields.CharField')(default='', max_length=20, blank=True),
-                      keep_default=False)
-
-        # Adding field 'TestCenterUser.uploaded_at'
-        db.add_column('student_testcenteruser', 'uploaded_at',
-                      self.gf('django.db.models.fields.DateTimeField')(null=True, db_index=True),
-                      keep_default=False)
-
-        # Adding field 'TestCenterUser.upload_error_message'
-        db.add_column('student_testcenteruser', 'upload_error_message',
-                      self.gf('django.db.models.fields.CharField')(default='', max_length=512, blank=True),
-                      keep_default=False)
-
         # Adding model 'TestCenterRegistration'
         db.create_table('student_testcenterregistration', (
             ('id', self.gf('django.db.models.fields.AutoField')(primary_key=True)),
-            ('testcenter_user', self.gf('django.db.models.fields.related.ForeignKey')(default=None, to=orm['student.TestCenterUser'], unique=True)),
+            ('testcenter_user', self.gf('django.db.models.fields.related.ForeignKey')(default=None, to=orm['student.TestCenterUser'])),
             ('course_id', self.gf('django.db.models.fields.CharField')(max_length=128, db_index=True)),
             ('created_at', self.gf('django.db.models.fields.DateTimeField')(auto_now_add=True, db_index=True, blank=True)),
             ('updated_at', self.gf('django.db.models.fields.DateTimeField')(auto_now=True, db_index=True, blank=True)),
             ('user_updated_at', self.gf('django.db.models.fields.DateTimeField')(db_index=True)),
+            ('client_authorization_id', self.gf('django.db.models.fields.CharField')(unique=True, max_length=20, db_index=True)),
             ('exam_series_code', self.gf('django.db.models.fields.CharField')(max_length=15, db_index=True)),
             ('eligibility_appointment_date_first', self.gf('django.db.models.fields.DateField')(db_index=True)),
             ('eligibility_appointment_date_last', self.gf('django.db.models.fields.DateField')(db_index=True)),
@@ -42,8 +28,35 @@ class Migration(SchemaMigration):
         ))
         db.send_create_signal('student', ['TestCenterRegistration'])
 
+        # Adding field 'TestCenterUser.upload_status'
+        db.add_column('student_testcenteruser', 'upload_status',
+                      self.gf('django.db.models.fields.CharField')(db_index=True, default='', max_length=20, blank=True),
+                      keep_default=False)
+
+        # Adding field 'TestCenterUser.uploaded_at'
+        db.add_column('student_testcenteruser', 'uploaded_at',
+                      self.gf('django.db.models.fields.DateTimeField')(db_index=True, null=True, blank=True),
+                      keep_default=False)
+
+        # Adding field 'TestCenterUser.upload_error_message'
+        db.add_column('student_testcenteruser', 'upload_error_message',
+                      self.gf('django.db.models.fields.CharField')(default='', max_length=512, blank=True),
+                      keep_default=False)
+
+        # Adding index on 'TestCenterUser', fields ['company_name']
+        db.create_index('student_testcenteruser', ['company_name'])
+
+        # Adding unique constraint on 'TestCenterUser', fields ['client_candidate_id']
+        db.create_unique('student_testcenteruser', ['client_candidate_id'])
+
 
     def backwards(self, orm):
+        # Removing unique constraint on 'TestCenterUser', fields ['client_candidate_id']
+        db.delete_unique('student_testcenteruser', ['client_candidate_id'])
+
+        # Removing index on 'TestCenterUser', fields ['company_name']
+        db.delete_index('student_testcenteruser', ['company_name'])
+
         # Deleting model 'TestCenterRegistration'
         db.delete_table('student_testcenterregistration')
 
@@ -126,17 +139,17 @@ class Migration(SchemaMigration):
             'accommodation_code': ('django.db.models.fields.CharField', [], {'max_length': '64', 'blank': 'True'}),
             'accommodation_request': ('django.db.models.fields.CharField', [], {'max_length': '1024', 'blank': 'True'}),
             'client_authorization_id': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20', 'db_index': 'True'}),
-            'uploaded_at': ('django.db.models.fields.DateTimeField', [], {'db_index': 'True'}),
             'course_id': ('django.db.models.fields.CharField', [], {'max_length': '128', 'db_index': 'True'}),
             'created_at': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'db_index': 'True', 'blank': 'True'}),
             'eligibility_appointment_date_first': ('django.db.models.fields.DateField', [], {'db_index': 'True'}),
             'eligibility_appointment_date_last': ('django.db.models.fields.DateField', [], {'db_index': 'True'}),
             'exam_series_code': ('django.db.models.fields.CharField', [], {'max_length': '15', 'db_index': 'True'}),
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
-            'testcenter_user': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': "orm['student.TestCenterUser']", 'unique': 'True'}),
+            'testcenter_user': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': "orm['student.TestCenterUser']"}),
             'updated_at': ('django.db.models.fields.DateTimeField', [], {'auto_now': 'True', 'db_index': 'True', 'blank': 'True'}),
             'upload_error_message': ('django.db.models.fields.CharField', [], {'max_length': '512', 'blank': 'True'}),
             'upload_status': ('django.db.models.fields.CharField', [], {'max_length': '20', 'blank': 'True'}),
+            'uploaded_at': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'db_index': 'True'}),
             'user_updated_at': ('django.db.models.fields.DateTimeField', [], {'db_index': 'True'})
         },
         'student.testcenteruser': {
@@ -146,9 +159,8 @@ class Migration(SchemaMigration):
             'address_3': ('django.db.models.fields.CharField', [], {'max_length': '40', 'blank': 'True'}),
             'candidate_id': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'db_index': 'True'}),
             'city': ('django.db.models.fields.CharField', [], {'max_length': '32', 'db_index': 'True'}),
-            'client_candidate_id': ('django.db.models.fields.CharField', [], {'max_length': '50', 'db_index': 'True'}),
-            'company_name': ('django.db.models.fields.CharField', [], {'max_length': '50', 'blank': 'True'}),
-            'uploaded_at': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'db_index': 'True'}),
+            'client_candidate_id': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '50', 'db_index': 'True'}),
+            'company_name': ('django.db.models.fields.CharField', [], {'db_index': 'True', 'max_length': '50', 'blank': 'True'}),
             'country': ('django.db.models.fields.CharField', [], {'max_length': '3', 'db_index': 'True'}),
             'created_at': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'db_index': 'True', 'blank': 'True'}),
             'extension': ('django.db.models.fields.CharField', [], {'db_index': 'True', 'max_length': '8', 'blank': 'True'}),
@@ -166,7 +178,8 @@ class Migration(SchemaMigration):
             'suffix': ('django.db.models.fields.CharField', [], {'max_length': '255', 'blank': 'True'}),
             'updated_at': ('django.db.models.fields.DateTimeField', [], {'auto_now': 'True', 'db_index': 'True', 'blank': 'True'}),
             'upload_error_message': ('django.db.models.fields.CharField', [], {'max_length': '512', 'blank': 'True'}),
-            'upload_status': ('django.db.models.fields.CharField', [], {'max_length': '20', 'blank': 'True'}),
+            'upload_status': ('django.db.models.fields.CharField', [], {'db_index': 'True', 'max_length': '20', 'blank': 'True'}),
+            'uploaded_at': ('django.db.models.fields.DateTimeField', [], {'db_index': 'True', 'null': 'True', 'blank': 'True'}),
             'user': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': "orm['auth.User']", 'unique': 'True'}),
             'user_updated_at': ('django.db.models.fields.DateTimeField', [], {'db_index': 'True'})
         },
@@ -194,4 +207,4 @@ class Migration(SchemaMigration):
         }
     }
 
-    complete_apps = ['student']
+    complete_apps = ['student']
\ No newline at end of file

common/djangoapps/student/models.py

@@ -40,6 +40,7 @@ import hashlib
 import json
 import logging
 import uuid
+from random import randint
 
 
 from django.conf import settings
@@ -47,10 +48,12 @@ from django.contrib.auth.models import User
 from django.db import models
 from django.db.models.signals import post_save
 from django.dispatch import receiver
-from django.forms import ModelForm
+from django.forms import ModelForm, forms
 
 import comment_client as cc
 from django_comment_client.models import Role
+from feedparser import binascii
+import os
 
 
 log = logging.getLogger(__name__)
@@ -160,7 +163,7 @@ class TestCenterUser(models.Model):
     candidate_id = models.IntegerField(null=True, db_index=True)
 
     # Unique ID we assign our user for the Test Center.
-    client_candidate_id = models.CharField(max_length=50, db_index=True)
+    client_candidate_id = models.CharField(unique=True, max_length=50, db_index=True)
 
     # Name
     first_name = models.CharField(max_length=30, db_index=True)
@@ -191,10 +194,10 @@ class TestCenterUser(models.Model):
     fax_country_code = models.CharField(max_length=3, blank=True)
 
     # Company
-    company_name = models.CharField(max_length=50, blank=True)
+    company_name = models.CharField(max_length=50, blank=True, db_index=True)
 
     # Confirmation
-    upload_status = models.CharField(max_length=20, blank=True)  # 'Error' or 'Accepted'
+    upload_status = models.CharField(max_length=20, blank=True, db_index=True)  # 'Error' or 'Accepted'
     uploaded_at = models.DateTimeField(null=True, blank=True, db_index=True)
     upload_error_message = models.CharField(max_length=512, blank=True)
     
@@ -217,26 +220,21 @@ class TestCenterUser(models.Model):
             
         return False    
                               
-#    def update(self, dict):
-#        # leave user and client_candidate_id as before
-#        self.user_updated_at = datetime.now()
-#        for fieldname in TestCenterUser.user_provided_fields():
-#            self.__setattr__(fieldname, dict[fieldname])
-
-#    @staticmethod
-#    def create(user, dict):
-#        testcenter_user = TestCenterUser(user=user)
-#        testcenter_user.update(dict)
-#        # testcenter_user.candidate_id remains unset    
-#        # TODO: assign an ID of our own:
-#        testcenter_user.client_candidate_id = 'edx' + unique_id_for_user(user)  # some unique value  
+    @staticmethod
+    def _generate_candidate_id():
+        NUM_DIGITS = 12
+        return u"edX%0d" % randint(1, 10**NUM_DIGITS-1) # binascii.hexlify(os.urandom(8))
         
     @staticmethod
     def create(user):
         testcenter_user = TestCenterUser(user=user)
         # testcenter_user.candidate_id remains unset    
         # assign an ID of our own:
-        testcenter_user.client_candidate_id = 'edx' + unique_id_for_user(user)  # some unique value  
+        cand_id = TestCenterUser._generate_candidate_id()
+        while TestCenterUser.objects.filter(client_candidate_id=cand_id).exists():
+            cand_id = TestCenterUser._generate_candidate_id()
+        testcenter_user.client_candidate_id = cand_id  
+        return testcenter_user
 
 class TestCenterUserForm(ModelForm):
     class Meta:
@@ -251,6 +249,60 @@ class TestCenterUserForm(ModelForm):
         new_user.user_updated_at = datetime.now()
         new_user.save()
         
+    # add validation:
+    
+    @staticmethod
+    def can_encode_as_latin(fieldvalue):
+        try:
+            fieldvalue.encode('iso-8859-1')
+        except UnicodeEncodeError:
+            return False
+        return True
+    
+    def check_country_code(self, fieldname):
+        code = self.cleaned_data[fieldname]
+        if code and len(code) != 3:
+            raise forms.ValidationError(u'Must be three characters (ISO 3166-1):  e.g. USA, CAN, MNG')
+        return code
+        
+    def clean_country(self):
+        return self.check_country_code('country')
+        
+    def clean_phone_country_code(self):
+        return self.check_country_code('phone_country_code')
+
+    def clean_fax_country_code(self):
+        return self.check_country_code('fax_country_code')
+        
+    def clean(self):
+        cleaned_data = super(TestCenterUserForm, self).clean()
+        
+        # check for interactions between fields:
+        if 'country' in cleaned_data:
+            country = cleaned_data.get('country')
+            if country == 'USA' or country == 'CAN':
+                if 'state' in cleaned_data and len(cleaned_data['state']) == 0:
+                    self._errors['state'] = self.error_class([u'Required if country is USA or CAN.'])                
+                    del cleaned_data['state']
+
+                if 'postal_code' in cleaned_data and len(cleaned_data['postal_code']) == 0:
+                    self._errors['postal_code'] = self.error_class([u'Required if country is USA or CAN.'])                
+                    del cleaned_data['postal_code']
+                    
+        if 'fax' in cleaned_data and len(cleaned_data['fax']) > 0 and 'fax_country_code' in cleaned_data and len(cleaned_data['fax_country_code']) == 0:
+            self._errors['fax_country_code'] = self.error_class([u'Required if fax is specified.'])                
+            del cleaned_data['fax_country_code']
+
+        # check encoding for all fields:
+        cleaned_data_fields = [fieldname for fieldname in cleaned_data]
+        for fieldname in cleaned_data_fields:
+            if not TestCenterUserForm.can_encode_as_latin(cleaned_data[fieldname]):
+                self._errors[fieldname] = self.error_class([u'Must only use characters in Latin-1 encoding'])                
+                del cleaned_data[fieldname]
+
+        # Always return the full collection of cleaned data.
+        return cleaned_data
+        
         
    
 ACCOMODATION_CODES = (
@@ -282,7 +334,7 @@ class TestCenterRegistration(models.Model):
     # to find an exam registration, we key off of the user and course_id.
     # If multiple exams per course are possible, we would also need to add the 
     # exam_series_code.
-    testcenter_user = models.ForeignKey(TestCenterUser, unique=True, default=None)
+    testcenter_user = models.ForeignKey(TestCenterUser, default=None)
     course_id = models.CharField(max_length=128, db_index=True)
     
     created_at = models.DateTimeField(auto_now_add=True, db_index=True)
@@ -295,7 +347,7 @@ class TestCenterRegistration(models.Model):
     user_updated_at = models.DateTimeField(db_index=True)
     # "client_authorization_id" is the client's unique identifier for the authorization.  
     # This must be present for an update or delete to be sent to Pearson.
-    #client_authorization_id = models.CharField(max_length=20, unique=True, db_index=True)
+    client_authorization_id = models.CharField(max_length=20, unique=True, db_index=True)
 
     # information about the test, from the course policy:
     exam_series_code = models.CharField(max_length=15, db_index=True)
@@ -311,7 +363,7 @@ class TestCenterRegistration(models.Model):
 
     # Confirmation
     upload_status = models.CharField(max_length=20, blank=True)  # 'Error' or 'Accepted'
-    uploaded_at = models.DateTimeField(null=True, blank=True, db_index=True)
+    uploaded_at = models.DateTimeField(null=True, db_index=True)
     upload_error_message = models.CharField(max_length=512, blank=True)
 
     @property
@@ -331,25 +383,26 @@ class TestCenterRegistration(models.Model):
         registration.eligibility_appointment_date_first = exam_info.get('First_Eligible_Appointment_Date')
         registration.eligibility_appointment_date_last = exam_info.get('Last_Eligible_Appointment_Date')
         # accommodation_code remains blank for now, along with Pearson confirmation
-        registration.user_updated_at = datetime.now()
-        #registration.client_authorization_id = registration._create_client_authorization_id()
+        registration.client_authorization_id = registration._create_client_authorization_id()
         return registration
+
+    @staticmethod
+    def _generate_authorization_id():
+        NUM_DIGITS = 12
+        return u"edX%0d" % randint(1, 10**NUM_DIGITS-1) # binascii.hexlify(os.urandom(8))
+    
     
     def _create_client_authorization_id(self):
         """
-        Return a unique id for a registration, suitable for inserting into
-        e.g. personalized survey links.
+        Return a unique id for a registration, suitable for using as an authorization code
+        for Pearson.  It must fit within 20 characters.
         """
-        # include the secret key as a salt, and to make the ids unique across
-        # different LMS installs.  Then add in (user, course, exam), which should 
-        # be unique.  
-        h = hashlib.md5()
-        h.update(settings.SECRET_KEY)
-        h.update(str(self.testcenter_user.user.id))
-        h.update(str(self.course_id))
-        h.update(str(self.exam_series_code))
-        return h.hexdigest()
-
+        # generate a random value, and check to see if it already is in use here
+        auth_id = TestCenterRegistration._generate_authorization_id()
+        while TestCenterRegistration.objects.filter(client_authorization_id=auth_id).exists():
+            auth_id = TestCenterRegistration._generate_authorization_id()
+        return auth_id
+            
     def is_accepted(self):
         return self.upload_status == 'Accepted'
   
@@ -362,7 +415,21 @@ class TestCenterRegistration(models.Model):
     def is_pending_acknowledgement(self):
         return self.upload_status == '' and not self.is_pending_accommodation()
 
+class TestCenterRegistrationForm(ModelForm):
+    class Meta:
+        model = TestCenterRegistration
+        fields = ( 'accommodation_request', )
+        
+    def update_and_save(self):
+        registration = self.save(commit=False)
+        # create additional values here:
+        registration.user_updated_at = datetime.now()
+        registration.save()
 
+    # TODO: add validation code for values added to accommodation_code field.
+    
+    
+    
 def get_testcenter_registrations_for_user_and_course(user, course_id, exam_series_code=None):
     try:
         tcu = TestCenterUser.objects.get(user=user)

common/djangoapps/student/views.py

@@ -18,18 +18,17 @@ from django.contrib.auth.models import User
 from django.contrib.auth.decorators import login_required
 from django.core.context_processors import csrf
 from django.core.mail import send_mail
-from django.core.urlresolvers import reverse
 from django.core.validators import validate_email, validate_slug, ValidationError
 from django.db import IntegrityError
-from django.http import HttpResponse, HttpResponseForbidden, Http404,\
-    HttpResponseRedirect
+from django.http import HttpResponse, HttpResponseForbidden, Http404
 from django.shortcuts import redirect
 from mitxmako.shortcuts import render_to_response, render_to_string
 from bs4 import BeautifulSoup
 from django.core.cache import cache
 
 from django_future.csrf import ensure_csrf_cookie, csrf_exempt
-from student.models import (Registration, UserProfile, TestCenterUser, TestCenterUserForm, TestCenterRegistration,
+from student.models import (Registration, UserProfile, TestCenterUser, TestCenterUserForm, 
+                            TestCenterRegistration, TestCenterRegistrationForm,
                             PendingNameChange, PendingEmailChange,
                             CourseEnrollment, unique_id_for_user,
                             get_testcenter_registrations_for_user_and_course)
@@ -248,8 +247,6 @@ def dashboard(request):
                'show_courseware_links_for' : show_courseware_links_for,
                'cert_statuses': cert_statuses,
                'news': top_news,
-# No longer needed here...move to begin_registration               
-#               'testcenteruser': testcenteruser,
                }
 
     return render_to_response('dashboard.html', context)
@@ -657,11 +654,12 @@ def create_test_registration(request, post_override=None):
         
     try:
         testcenter_user = TestCenterUser.objects.get(user=user)
+        needs_updating = testcenter_user.needs_update(post_vars)    
     except TestCenterUser.DoesNotExist:
         # do additional initialization here:
         testcenter_user = TestCenterUser.create(user)
+        needs_updating = True
 
-    needs_updating = testcenter_user.needs_update(post_vars)    
 
     # perform validation:
     if needs_updating:
@@ -692,20 +690,28 @@ def create_test_registration(request, post_override=None):
         # right now.
         
     else:
-        accommodation_request = post_vars.get('accommodations','')
+        accommodation_request = post_vars.get('accommodation_request','')
         registration = TestCenterRegistration.create(testcenter_user, course_id, exam_info, accommodation_request)
         needs_saving = True
 
-    # TODO: add validation of registration.  (Mainly whether an accommodation request is too long.)        
     if needs_saving:
-        registration.save()
-        
+        # do validation of registration.  (Mainly whether an accommodation request is too long.)        
+        form = TestCenterRegistrationForm(instance=registration, data=post_vars)
+        if form.is_valid():
+            form.update_and_save()
+        else:
+            response_data = {'success': False}
+            # return a list of errors...
+            response_data['field_errors'] = form.errors
+            response_data['non_field_errors'] = form.non_field_errors()
+            return HttpResponse(json.dumps(response_data), mimetype="application/json")
+         
 
     # only do the following if there is accommodation text to send,
     # and a destination to which to send it.
     # TODO: still need to create the accommodation email templates
-    if 'accommodations' in post_vars and settings.MITX_FEATURES.get('ACCOMMODATION_EMAIL'):
-        d = {'accommodations': post_vars['accommodations'] }
+    if 'accommodation_request' in post_vars and settings.MITX_FEATURES.get('ACCOMMODATION_EMAIL'):
+        d = {'accommodation_request': post_vars['accommodation_request'] }
         
         # composes accommodation email
         subject = render_to_string('emails/accommodation_email_subject.txt', d)

lms/templates/dashboard.html

@@ -247,7 +247,7 @@
                 <div class="message message-status is-shown exam-schedule">
                 	<!-- TODO: pull Pearson destination out into a Setting -->
                    <a href="https://www1.pearsonvue.com/testtaker/signin/SignInPage/EDX" class="exam-button">Schedule Pearson exam</a>
-                   <p class="exam-registration-number"><a href="${testcenter_register_target}" id="exam_register_link">Registration</a> number: <strong>edx00015879548</strong></p>
+                   <p class="exam-registration-number"><a href="${testcenter_register_target}" id="exam_register_link">Registration</a> number: <strong>${registrations[0].client_authorization_id}</strong></p>
                    <p class="message-copy">Write this down! You’ll need it to schedule your exam.</p>
                 </div>
                 % endif

lms/templates/test_center_register.html

@@ -68,17 +68,6 @@
       $("label").removeClass("is-focused");
     });
 
-    $(document).delegate('#testcenter_register_form', 'ajax:success', function(data, json, xhr) {
-      if(json.success) {
-        location.href="${reverse('dashboard')}";
-      } else {
-        if($('#testcenter_register_error').length == 0) {
-          $('#testcenter_register_form').prepend('<div id="testcenter_register_error" class="modal-form-error"></div>');
-        }
-        $('#testcenter_register_error').text(json.field_errors).stop().css("display", "block");
-      }
-    });
-
   })(this)
   </script>
 </%block>
@@ -262,9 +251,9 @@
             </li>
               % endif
             % else: 
-            <li class="field">
+            <li data-field="accommodation_request" class="field">
               <label for="accommodations">Accommodations Requested</label>
-              <textarea class="long" id="accommodations" name="accommodations" value="" placeholder=""></textarea>             
+              <textarea class="long" id="accommodations" name="accommodation_request" value="" placeholder=""></textarea>             
             </li>
             % endif
           </ol>
@@ -290,7 +279,7 @@
       <% regstatus = "Registration approved by Pearson" %>
     <div class="message message-status registration-accepted is-shown">
       <p class="registration-status"><span class="label">Registration Status: </span><span class="value">${regstatus}</span></p>
-      <p class="registration-number"><span class="label">Registration number: </span> <span class="value">edx00015879548</span></p>
+      <p class="registration-number"><span class="label">Registration number: </span> <span class="value">${registration.client_authorization_id}</span></p>
       <p class="message-copy">Write this down! You’ll need it to schedule your exam.</p>
       <a href="https://www1.pearsonvue.com/testtaker/signin/SignInPage/EDX" class="button exam-button">Schedule Pearson exam</a>
     </div>