implement mail address target editing

- extract common code into managemails.forms.MailAddressFieldMixin
- move code from forms into managemails.models.MailAddress
- implement managemails.models.MailboxManager.unused and unused_or_own
- implement managemails.forms.EditMailAddressForm
- add managemails.views.EditMailAddress
- add URL pattern 'edit_mailaddress' to managemails.urls
- add template managemails/mailaddress_edit.html
- add changelog entry

docs/changelog.rst

@@ -1,6 +1,7 @@
 Changelog
 =========
 
+* :feature:`-` implement mail address target editing
 * :feature:`-` implement mail address deletion
 * :feature:`-` implement adding mail address to mail domains
 * :feature:`-` implement adding options to hosting packages

gnuviechadmin/managemails/forms.py

@@ -19,8 +19,6 @@ from crispy_forms.layout import (
 
 from .models import (
     MailAddress,
-    MailAddressForward,
-    MailAddressMailbox,
     Mailbox,
 )
 from gvawebcore.forms import PasswordModelFormMixin
@@ -106,9 +104,9 @@ def multiple_email_validator(value):
     return value
 
 
-class AddMailAddressForm(forms.ModelForm):
+class MailAddressFieldMixin(forms.Form):
     """
-    This form is used to add a new mail address.
+    This mixin defines form fields common to mail address forms.
 
     """
     mailbox_or_forwards = forms.TypedChoiceField(
@@ -133,6 +131,12 @@ class AddMailAddressForm(forms.ModelForm):
         validators=[multiple_email_validator],
     )
 
+
+class AddMailAddressForm(forms.ModelForm, MailAddressFieldMixin):
+    """
+    This form is used to add a new mail address.
+
+    """
     class Meta:
         model = MailAddress
         fields = ['localpart']
@@ -141,8 +145,8 @@ class AddMailAddressForm(forms.ModelForm):
         self.maildomain = kwargs.pop('maildomain')
         self.hosting_package = kwargs.pop('hostingpackage')
         super(AddMailAddressForm, self).__init__(*args, **kwargs)
-        self.fields['mailbox'].queryset = Mailbox.objects.filter(
+        self.fields['mailbox'].queryset = Mailbox.objects.unused(
-            active=True, osuser=self.hosting_package.osuser,
+            osuser=self.hosting_package.osuser,
         )
 
         self.helper = FormHelper()
@@ -186,11 +190,10 @@ class AddMailAddressForm(forms.ModelForm):
         data = self.cleaned_data
         if data['mailbox_or_forwards'] == MAILBOX_OR_FORWARDS.mailbox:
             if not data['mailbox']:
-                raise forms.ValidationError(_('No mailbox selected'))
+                self.add_error('mailbox', _('No mailbox selected'))
         elif data['mailbox_or_forwards'] == MAILBOX_OR_FORWARDS.forwards:
-            if 'forwards' not in data:
+            if 'forwards' not in data or not data['forwards']:
-                raise forms.ValidationError(
+                self.add_error('forwards', _('No forward addresses selected'))
-                    _('No forward addresses selected'))
         else:
             raise forms.ValidationError(
                 _('Illegal choice for target of the mail address'))
@@ -205,21 +208,87 @@ class AddMailAddressForm(forms.ModelForm):
 
         """
         self.instance.domain = self.maildomain
-        target_choice = self.cleaned_data['mailbox_or_forwards']
+        data = self.cleaned_data
-        mailaddress = super(AddMailAddressForm, self).save(commit)
+        target_choice = data['mailbox_or_forwards']
         if target_choice == MAILBOX_OR_FORWARDS.mailbox:
-            mailbox = MailAddressMailbox(
+            mabox = self.instance.set_mailbox(data['mailbox'], commit=False)
-                mailaddress=mailaddress,
-                mailbox=self.cleaned_data['mailbox'])
-            if commit:
-                mailbox.save()
         elif target_choice == MAILBOX_OR_FORWARDS.forwards:
-            for address in [
+            targets = [part.strip() for part in data['forwards'].split()]
-                part.strip() for part in
+            fwds = self.instance.set_forward_addresses(targets, commit=False)
-                self.cleaned_data['forwards'].split(',')
+        mailaddress = super(AddMailAddressForm, self).save(commit)
-            ]:
-                forward = MailAddressForward(
-                    mailaddress=mailaddress, target=part)
         if commit:
-                    forward.save()
+            if target_choice == MAILBOX_OR_FORWARDS.mailbox:
+                mabox.mailaddress = mailaddress
+                mabox.save()
+            elif target_choice == MAILBOX_OR_FORWARDS.forwards:
+                for fwd in fwds:
+                    fwd.mailaddress = mailaddress
+                    fwd.save()
         return mailaddress
+
+
+class EditMailAddressForm(forms.ModelForm, MailAddressFieldMixin):
+    """
+    This form is used to edit the targets for a mail address.
+
+    """
+    class Meta:
+        model = MailAddress
+        fields = []
+
+    def __init__(self, *args, **kwargs):
+        self.hosting_package = kwargs.pop('hostingpackage')
+        self.maildomain = kwargs.pop('maildomain')
+        super(EditMailAddressForm, self).__init__(*args, **kwargs)
+        self.fields['mailbox'].queryset = Mailbox.objects.unused_or_own(
+            self.instance, self.hosting_package.osuser
+        )
+
+        self.helper = FormHelper()
+        self.helper.form_action = reverse(
+            'edit_mailaddress', kwargs={
+                'package': self.hosting_package.id,
+                'domain': self.maildomain.domain,
+                'pk': self.instance.id,
+            })
+        self.helper.layout = Layout(
+            Div(
+                Div(
+                    'mailbox_or_forwards',
+                    css_class='col-log-2 col-md-2 col-xs-12',
+                ),
+                Div(
+                    'mailbox',
+                    'forwards',
+                    css_class='col-lg-10 col-md-10 col-xs-12',
+                ),
+                css_class='row',
+            ),
+            Submit('submit', _('Change mail address targets')),
+        )
+
+    def clean(self):
+        data = self.cleaned_data
+        if data['mailbox_or_forwards'] == MAILBOX_OR_FORWARDS.mailbox:
+            if not data['mailbox']:
+                self.add_error('mailbox', _('No mailbox selected'))
+        elif data['mailbox_or_forwards'] == MAILBOX_OR_FORWARDS.forwards:
+            if 'forwards' not in data or not data['forwards']:
+                self.add_error('forwards', _('No forward addresses selected'))
+        else:
+            raise forms.ValidationError(
+                _('Illegal choice for target of the mail address'))
+
+    def save(self, commit=True):
+        """
+        Save the mail address.
+
+        :param boolean commit:
+        """
+        data = self.cleaned_data
+        if data['mailbox_or_forwards'] == MAILBOX_OR_FORWARDS.mailbox:
+            self.instance.set_mailbox(data['mailbox'], commit)
+        elif data['mailbox_or_forwards'] == MAILBOX_OR_FORWARDS.forwards:
+            targets = [part.strip() for part in data['forwards'].split(',')]
+            self.instance.set_foward_addresses(targets, commit)
+        return self.instance

gnuviechadmin/managemails/models.py

@@ -61,6 +61,30 @@ class MailboxManager(models.Manager):
                 break
         return mailboxname
 
+    def unused_or_own(self, mailaddress, osuser):
+        """
+        Returns a queryset that fetches those mailboxes that belong to the
+        given operating system user and are either not used by any mail address
+        or used by the given mailaddress itself.
+
+        """
+        return self.filter(
+            models.Q(mailaddressmailbox__isnull=True) |
+            models.Q(mailaddressmailbox__mailaddress=mailaddress),
+            active=True, osuser=osuser,
+        )
+
+    def unused(self, osuser):
+        """
+        Returns a queryset that fetches unused mailboxes belonging to the
+        given operating system user.
+
+        """
+        return self.filter(
+            mailaddressmailbox__isnull=True,
+            active=True, osuser=osuser,
+        )
+
 
 @python_2_unicode_compatible
 class Mailbox(ActivateAbleMixin, TimeStampedModel):
@@ -130,6 +154,70 @@ class MailAddress(ActivateAbleMixin, TimeStampedModel, models.Model):
     def __str__(self):
         return "{0}@{1}".format(self.localpart, self.domain)
 
+    def set_mailbox(self, mailbox, commit=True):
+        """
+        Set the target for this mail address to the given mailbox. This method
+        takes care of removing forwarding addresses or changing existing
+        mailbox relations.
+
+        :param mailbox: :py:class:`Mailbox`
+        :param boolean commit: whether to persist changes or not
+        :return: :py:class:`MailAddressMailbox` instance
+
+        """
+        if self.pk is not None:
+            if MailAddressMailbox.objects.filter(mailaddress=self).exists():
+                mabox = MailAddressMailbox.objects.get(mailaddress=self)
+                mabox.mailbox = mailbox
+            else:
+                mabox = MailAddressMailbox(mailaddress=self, mailbox=mailbox)
+            if commit:
+                mabox.save()
+            for mafwd in MailAddressForward.objects.filter(mailaddress=self):
+                mafwd.delete()
+        else:
+            mabox = MailAddressMailbox(mailaddress=self, mailbox=mailbox)
+            if commit:
+                mabox.save()
+        return mabox
+
+    def set_forward_addresses(self, addresses, commit=True):
+        """
+        Set the forwarding addresses for this mail address to the given
+        addresses. This method takes care of removing other mail forwards and
+        mailboxes.
+
+        :param addresses: list of email address strings
+        :param boolean commit: whether to persist changes or not
+        :return: list of :py:class:`MailAddressForward` instances
+
+        """
+        retval = []
+        if self.pk is not None:
+            if MailAddressMailbox.objects.filter(mailaddress=self).exists():
+                mabox = MailAddressMailbox.objects.get(mailaddress=self)
+                mabox.delete()
+            forwards = MailAddressForward.objects.filter(
+                mailaddress=self).all()
+            for item in forwards:
+                if not item.target in addresses:
+                    item.delete()
+                else:
+                    retval.append(item)
+            for target in addresses:
+                if not target in [item.target for item in forwards]:
+                    mafwd = MailAddressForward(mailaddress=self, target=target)
+                    if commit:
+                        mafwd.save()
+                    retval.append(item)
+        else:
+            for target in addresses:
+                mafwd = MailAddressForward(mailaddress=self, target=target)
+                if commit:
+                    mafwd.save()
+                retval.append(item)
+        return retval
+
 
 @python_2_unicode_compatible
 class MailAddressMailbox(TimeStampedModel, models.Model):

gnuviechadmin/managemails/urls.py

@@ -12,6 +12,7 @@ from .views import (
     ChangeMailboxPassword,
     CreateMailbox,
     DeleteMailAddress,
+    EditMailAddress,
 )
 
 urlpatterns = patterns(
@@ -22,6 +23,9 @@ urlpatterns = patterns(
         ChangeMailboxPassword.as_view(), name='change_mailbox_password'),
     url(r'^(?P<package>\d+)/mailaddress/(?P<domain>[\w0-9-.]+)/create$',
         AddMailAddress.as_view(), name='add_mailaddress'),
+    url(r'^(?P<package>\d+)/mailaddress/(?P<domain>[\w0-9-.]+)/(?P<pk>\d+)'
+        r'/edit$',
+        EditMailAddress.as_view(), name='edit_mailaddress'),
     url(r'^(?P<package>\d+)/mailaddress/(?P<domain>[\w0-9-.]+)/(?P<pk>\d+)'
         r'/delete$',
         DeleteMailAddress.as_view(), name='delete_mailaddress'),

gnuviechadmin/managemails/views.py

@@ -23,9 +23,12 @@ from .forms import (
     AddMailAddressForm,
     ChangeMailboxPasswordForm,
     CreateMailboxForm,
+    EditMailAddressForm,
+    MAILBOX_OR_FORWARDS,
 )
 from .models import (
     MailAddress,
+    MailAddressMailbox,
     Mailbox,
 )
 
@@ -188,3 +191,55 @@ class DeleteMailAddress(
 
     def get_success_url(self):
         return self.get_hosting_package().get_absolute_url()
+
+
+class EditMailAddress(
+    HostingPackageAndCustomerMixin, StaffOrSelfLoginRequiredMixin, UpdateView
+):
+    """
+    This view is used to edit a mail address' target mailbox or forwarding
+    addresses.
+
+    """
+    context_object_name = 'mailaddress'
+    form_class = EditMailAddressForm
+    model = MailAddress
+    template_name_suffix = '_edit'
+
+    def get_maildomain(self):
+        return get_object_or_404(MailDomain, domain=self.kwargs['domain'])
+
+    def get_context_data(self, **kwargs):
+        context = super(EditMailAddress, self).get_context_data(**kwargs)
+        context['customer'] = self.get_customer_object()
+        return context
+
+    def get_form_kwargs(self):
+        kwargs = super(EditMailAddress, self).get_form_kwargs()
+        kwargs.update({
+            'hostingpackage': self.get_hosting_package(),
+            'maildomain': self.get_maildomain(),
+        })
+        return kwargs
+
+    def get_initial(self):
+        initial = super(EditMailAddress, self).get_initial()
+        mailaddress = self.get_object()
+        if MailAddressMailbox.objects.filter(mailaddress=mailaddress).exists():
+            initial['mailbox'] = mailaddress.mailaddressmailbox.mailbox
+            initial['mailbox_or_forwards'] = MAILBOX_OR_FORWARDS.mailbox
+        elif mailaddress.mailaddressforward_set.exists():
+            initial['forwards'] = ", ".join(
+                fwd.target for fwd in mailaddress.mailaddressforward_set.all()
+            )
+            initial['mailbox_or_forwards'] = MAILBOX_OR_FORWARDS.forwards
+        return initial
+
+    def form_valid(self, form):
+        mailaddress = form.save()
+        messages.success(
+            self.request,
+            _('Successfully updated mail address {mailaddress} '
+              'targets.').format(mailaddress=mailaddress)
+        )
+        return redirect(self.get_hosting_package())

gnuviechadmin/templates/managemails/mailaddress_edit.html

@@ -0,0 +1,26 @@
+{% extends "managemails/base.html" %}
+{% load i18n crispy_forms_tags %}
+
+{% block title %}{{ block.super }} - {% spaceless %}
+{% if user == customer %}
+{% blocktrans %}Change target of Mail Address{% endblocktrans %}
+{% else %}
+{% blocktrans with full_name=customer.get_full_name %}
+Change target of Mail Address for Customer {{ full_name }}
+{% endblocktrans %}
+{% endif %}
+{% endspaceless %}{% endblock title %}
+
+{% block page_title %}{% spaceless %}
+{% if user == customer %}
+{% blocktrans %}Change target of Mail Address{% endblocktrans %}
+{% else %}
+{% blocktrans with full_name=customer.get_full_name %}
+Change target of Mail Address for Customer {{ full_name }}
+{% endblocktrans %}
+{% endif %}
+{% endspaceless %}{% endblock page_title %}
+
+{% block content %}
+{% crispy form %}
+{% endblock content %}