Add user-to-user credit transfers [#21784207]

frontend/forms.py

@@ -177,6 +177,25 @@ class OpenCampaignForm(forms.ModelForm):
         fields = 'name', 'work',  'managers'
         widgets = { 'work': forms.HiddenInput }
 
+def getTransferCreditForm(maximum, data=None, *args, **kwargs ):
+    class TransferCreditForm(forms.Form):
+        recipient = AutoCompleteSelectField(
+                OwnerLookup,
+                label='Recipient',
+                widget=AutoCompleteSelectWidget(OwnerLookup),
+                required=True,
+                error_messages={'required': 'Please ensure the recipient is a valid Unglue.it account.'},
+            )
+        amount = forms.IntegerField(
+                required=True,
+                min_value=1, 
+                max_value=maximum,
+                label="Transfer Amount",
+                error_messages={'min_value': 'Transfer amount must be positive', 'max_value': 'You only have %(limit_value)s available for transfer'},
+            )
+    return TransferCreditForm( data=data )
+
+    
 class EditManagersForm(forms.ModelForm):
     managers = AutoCompleteSelectMultipleField(
             OwnerLookup,

frontend/templates/donation.html

@@ -4,8 +4,12 @@
 {% block title %}Donations{% endblock %}
 
 {% block extra_extra_head %}
+<link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.13/themes/ui-lightness/jquery-ui.css" type="text/css" media="screen">
 <link type="text/css" rel="stylesheet" href="/static/css/pledge.css"  />
-
+{{ transfer_form.media.css }}
+<script type="text/javascript" src="{{ jquery_home }}"></script>
+<script type="text/javascript" src="{{ jquery_ui_home }}" ></script>
+{{ transfer_form.media.js }}
 {% endblock %}
 
 {% block doccontent %}
@@ -15,6 +19,23 @@ You have a balance of {{ user.credit.balance }} donation credits. <br />
 You have pledged {{ user.credit.pledged }} donation credits to ungluing campaigns.<br />
 You have {{ user.credit.available }} donation credits available to pledge or transfer.<br />
 </p>
+<h2>Donation Credit Transfers</h2>
+{% if transfer_message %}
+<p>{{ transfer_message }}
+{% if transfer_amount %}
+<br /> Recipient: <a href="{% url supporter recipient %}">{{ recipient }}</a>
+<br /> Amount: {{ transfer_amount }} donation credits
+{% endif %}
+</p>
+{% endif %}
+<p>
+You may transfer up to {{ user.credit.available }} donation credits to another Unglue.it user.<br />
+</p>
+<form action="#" method="POST">
+	{% csrf_token %}
+    {{ transfer_form.as_p }}
+	<input id="transfer_submit" type="submit" name="transfer" value="Transfer Credits" />
+</form>
 {% endblock %}
 
 

frontend/views.py

@@ -47,6 +47,7 @@ from regluit.frontend.forms import UserData, UserEmail, ProfileForm, CampaignPle
 from regluit.frontend.forms import  RightsHolderForm, UserClaimForm, LibraryThingForm, OpenCampaignForm
 from regluit.frontend.forms import getManageCampaignForm, DonateForm, CampaignAdminForm, EmailShareForm, FeedbackForm
 from regluit.frontend.forms import EbookForm, CustomPremiumForm, EditManagersForm, EditionForm, PledgeCancelForm
+from regluit.frontend.forms import getTransferCreditForm
 from regluit.payment.manager import PaymentManager
 from regluit.payment.models import Transaction
 from regluit.payment.parameters import TARGET_TYPE_CAMPAIGN, TARGET_TYPE_DONATION, PAYMENT_TYPE_AUTHORIZATION
@@ -552,10 +553,28 @@ class DonationView(TemplateView):
     template_name = "donation.html"
     
     def get(self, request, *args, **kwargs): 
-        return self.render_to_response(self.get_context_data())
+        context = self.get_context_data()
+        context['transfer_form']=getTransferCreditForm(self.request.user.credit.available)
+        return self.render_to_response(context)
         
     def post(self, request, *args, **kwargs): 
-        return self.render_to_response(self.get_context_data())
+        context = self.get_context_data()
+        transfer_form=getTransferCreditForm(self.request.user.credit.available, data=self.request.POST)
+        if transfer_form.is_valid():
+            if self.request.user.credit.transfer_to(transfer_form.cleaned_data['recipient'], transfer_form.cleaned_data['amount']):
+                #successful transfer
+                context['transfer_message'] = 'Your transfer has been successfully executed.'
+                context['recipient']= transfer_form.cleaned_data['recipient']
+                context['transfer_amount'] = transfer_form.cleaned_data['amount']
+                context['transfer_form']=getTransferCreditForm(self.request.user.credit.available)
+            else:
+                #unsuccessful transfer
+                context['transfer_message'] = 'Your transfer was not successful.'
+                context['transfer_form']=transfer_form
+        else:
+            #not valid
+            context['transfer_form']=transfer_form
+        return self.render_to_response(context)
         
     def get_context_data(self, *args, **kwargs):
         context = {'user' : self.request.user}