I want to display a success page with a link back to the substance page. I can provide exactly the correct url but all it shows is an admin page with no content. The correct url is /admin/substance/substance/<pk>/ and that works only if the Stripe mechanism has not been called since the dev server reloaded itself.
I probably have an incorrect diagnosis here. The problem is most likely my misunderstanding of how to use the Admin properly. Any help will be very much appreciated.
Thanks
Mike
The process uses ModelAdmin.change_view()[1] to call my billing_payment_view()[2] which uses PaymentForm[3] and payment.html[4] template to pass the necessary hidden vars.
When the view executes (depending on whether payment is required) it pops up a (Stripe js) credit card collection form with a [Pay] button and that submits the detail to the Stripe API which in turn generates a token if successful or an error message and re-executes the billing_payment_view with request.POST including that detail plus all the hidden fields in the form. The view goes on to process the detail, generate a receipt, send an email to the payer and launch the billing_success_view()[5] and success.html[6] template.
[1] SubstanceAdmin.change_view() def change_view(self, request, object_id, form_url='', extra_context=None): """ self = SubstanceAdmin request = wsgi request object object_id = substance form_url = no idea! extra_context = dict of apps, models, admin_urls and permissions sm2mi stands for substance m2m ingredient. Ingredients are substances in a many-to-many relationship with another substance (ie a mixture). The through table is called Substance_Ingredients """ ingredients = Substance_Ingredients.objects.filter(substance_id=object_id) subscription = None for sm2mi in ingredients: payable, fee_type = sm2mi.fee_payable() # eg., True, PAID_DATA if payable: subscription = billing_subscribe(sm2mi, fee_type) if subscription: # we need to collect money for the owner self.change_form_template = 'payment.html' context = billing_collect_context( sm2mi, subscription, ) # get everything into the payment_view context if not extra_context: extra_context = dict() extra_context.update(self.admin_site.each_context(request)) extra_context.update(context) self.admin_site.admin_view( # now call the Stripe mechanism billing_payment_view( request, sm2mi, subscription, context=extra_context, ) ) # only one sm2mi at a time break return super(SubstanceAdmin, self).change_view( request, object_id, form_url, extra_context ) [2] billing_payment_view() @ensure_csrf_cookie def payment_view(request, sm2mi=None, subscription=None, context=None): display_message = '' display_insert = '' email_message = '' subscription_message = '' subscription_insert = '' charge = None context = context or {} templt = 'payment.html' form = PaymentForm() if request.method == "POST": resp = dict(request.POST) # data has been submitted to Stripe via Stripe js # stripe submits the js form which comes back without identifying args form = PaymentForm(request.POST) if form.is_valid(): go_back = '/admin/substance/substance/' try: token = form.cleaned_data['stripeToken'] if token: email = form.cleaned_data['stripeEmail'] sm2mi_id = form.cleaned_data['sm2mi_id'] if sm2mi_id and sm2mi is None: sm2mi = Substance_Ingredients.objects.get(pk=int(sm2mi_id)) subscription_id = form.cleaned_data['subscription_id'] if subscription_id and subscription is None: subscription = Subscription.objects.get(pk=int(subscription_id)) if sm2mi and subscription: ingredient = sm2mi.ingredient cents = subscription.get_cents() fee_total = subscription.calc_fee(total=True) # gst in charge = stripe.Charge.create( amount=int(float(fee_total) * cents), currency=subscription.fee_currency, description='{0}'.format(subscription.ingredient.name), source=token, ) if charge: go_back = '/admin/substance/substance/%s/' % sm2mi.substance.id subscription.token = token # see above try: with transaction.atomic(): subscription.save() except Exception: raise # transaction is done now make a receipt amount_paid = charge['amount'] if cents > 1: # cents may be zero eg', JPY amount_paid = round(charge['amount'] / cents, 2) receipt = Receipt.objects.create( licensee=sm2mi.substance.division.company, ingredient=ingredient, currency=subscription.fee_currency, amount_paid=amount_paid, charge=charge, ) receipt.save() # defaults need all methods to execute # make a received message for display and emailing para = '<p>' endpara = '</p>' strong = '<strong>' endstrong = '</strong>' display_message = '<p>Thank you for your {0} {1}{2} '\ 'payment to {3} for <strong>{4}</strong></p>'.format( subscription.fee_currency, subscription.fee_symbol, amount_paid, settings.BRANDING, ingredient.name.capitalize(), ) display_insert = '<p>A receipt will be emailed to you '\ 'shortly</p>' subscription_message = '<p>You are now '\ 'subscribed to {0} until 30 September. You may include '\ 'it in as many mixtures as desired.</p>'.format( ingredient.name.capitalize(), ) subscription_insert = '<p>If you have difficulty '\ 'accessing <a href="{0}">{1}</a> or you have any '\ 'questions please get in touch via {2}. Easy questions '\ 'might have an answer on the <a href="https://{3}/user-'\ 'docs/sharing/">sharing page</a>.</p>'.format( ingredient.get_absolute_url(), ingredient.name.capitalize(), settings.MANAGERS[0][1], settings.WEBSITE, ) email_message = '{0}{1}{2}'.format( display_message, '\n', subscription_message, ).replace( para, '' ).replace( endpara, '\n' ).replace( strong, '*' ).replace( endstrong, '*' ) display_message = '{0}{1}{2}{3}'.format( display_message, display_insert, subscription_message, subscription_insert, ) from_address = get_admin_email(full=True) to_address = [charge['source']['name']] subject = 'Subscription receipt for {0}'.format( ingredient.name.capitalize() ) try: send_mail( subject, email_message, from_address, to_address, fail_silently=False, ) except Exception as err: print('\n315 billing.views %s' % err) pass context['sm2mi'] = sm2mi context['receipt'] = receipt context['subscription'] = subscription context['message'] = mark_safe(display_message) #context['link'] = sm2mi.substance.get_substance_url() context['link'] = go_back return success_view(request, context) else: raise Exception('Gateway error') except Exception as err: err = '%s' % err if 'cannot use a Stripe token' in err: backto = '' if sm2mi: backto = '<p><a href="{0}">Back to {1}</a>'\ '</p>'.format( go_back, sm2mi.substance.name.capitalize() ) display_message = '<p>Cannot process the same payment '\ 'twice.</p><p>If an emailed receipt is not received at the '\ 'address just specified in the payment popup please get in '\ 'touch with <em>{0}</em> to ascertain whether payment was '\ 'successful. Please copy and paste the token below as a '\ 'reference.</p><p>{1}</p><p>{2}<p>'.format( get_manager_email(), token or 'No token at this point (375)', backto ) else: display_message = '{0}. Please report this error message to '\ '{1}'.format(err, get_admin_email()) context['message'] = mark_safe(display_message) # report failure to the card payer form.add_error(None, '%s' % err) return success_view(request, context) context['form'] = form return render( request=request, template_name=templt, context=context ) [3] PaymentForm class PaymentForm(forms.Form): sm2mi_id = forms.CharField(widget=forms.HiddenInput, required=False) ingredient_id = forms.CharField(widget=forms.HiddenInput, required=False) subscription_id = forms.CharField(widget=forms.HiddenInput, required=False) stripeToken = forms.CharField(widget=forms.HiddenInput, required=False) stripeEmail = forms.CharField(widget=forms.HiddenInput, required=False) stripeBillingName = forms.CharField(widget=forms.HiddenInput, required=False) stripeBillingAddressLine1 = forms.CharField(widget=forms.HiddenInput, required=False) stripeBillingAddressZip = forms.CharField(widget=forms.HiddenInput, required=False) stripeBillingAddressState = forms.CharField(widget=forms.HiddenInput, required=False) stripeBillingAddressCity = forms.CharField(widget=forms.HiddenInput, required=False) stripeBillingAddressCountry = forms.CharField(widget=forms.HiddenInput, required=False) [4] payment.html {% extends "admin/base_site.html" %} {% load admin_urls %} {% load i18n %} {% load common_tags %} {% block title %}{{ original }}{% endblock %} {% block content %} {% if subscription %} <div class="payment"> <p>{{ prepay_message }}</p> <p>Please proceed to payment.</p> <blockquote><strong> We do not store your payment detail here. Our PCI DSS compliant gateway service provider interfaces your card directly with your bank. Links to their terms and privacy policy will be visible when you click the <em>Pay with Card</em> button. See also our own privacy policy (link above). </strong> (PCI DSS = Payment Card Industry Data Security Standard) </blockquote> <p> </p> <form action="payment" method="POST"> {% csrf_token %} {% if form.errors or form.non_field_errors %} {{ form.errors }} {{ form.non_field_errors }} {% endif %} {% for field in form %} {% if field.name == "sm2mi_id" %} <input type="hidden" name="sm2mi_id" id="id_sm2mi_id" value="{{ sm2mi.id }}" /> {% elif field.name == "ingredient_id" %} <input type="hidden" name="ingredient_id" id="id_ingredient_id" value="{{ ingredient.id }}" /> {% elif field.name == "subscription_id" %} <input type="hidden" name="subscription_id" id="id_subscription_id" value="{{ subscription.id }}" /> {% else %} {{ field }} {% endif %} {% endfor %} <script src="https://checkout.stripe.com/checkout.js" class="stripe-button" data-key="{{ data_key }}" data-amount="{{ data_amount }}" data-name="{{ data_name }}" data-description="{{ data_description }}" data-image="{{ data_image }}" data-locale="{{ data_locale }}" data-currency="{{ data_currency | lower}}" data-zip-code="true" data-allow-remember-me="true" data-panel-label="Pay"> </script> </form> </div> {% endif %} {{ block.super }} {% endblock %} [5] billing_success_view def success_view(request, context=None): """ launched after a Stripe token is received by PaymentForm context is passed in by payment_view and has context['message'] """ if context is None: context = dict() context['message'] = 'Sorry - payment details cannot be reproduced' if 'Thank you for your' in context['message']: pass return render( request=request, template_name='success.html', context=context, ) [6] success.html {% extends "admin/base_site.html" %} {% load admin_urls %} {% load i18n %} {% load common_tags %} {% block title %}{{ original }}{% endblock %} {% block content %} <div id="container"> <div id="content" class="colM"> {% if message %}{{ message }}{% endif %} {% if link %} <p>Please do not refresh this page but rather click the 'Home' link above or <a href="{{ link }}">go back to {{ sm2mi.substance.name }}</a></p> {% endif %} </div> </div> {{ block.super }} {% endblock %}
Python 3.6, Django 1.11.20, dev server on Windows 10.
Haven't been *able* to get it working yet on Ubuntu 16.04 with Python 2.7 and haven't tried it yet on Python 2.7 on the dev server.
Getting Python 3.x running with Apache2 on Ubuntu is non-trivial due to co-existence with Trac (2.7 only) which also requires my SVN to cohabit on the same machine.
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