add admin action to resend welcome mail

website/admin.py

@@ -1,10 +1,21 @@
 from django.contrib import admin
 from .models import Registrant, Author, Category, Post, Contact
-# Register your models here.
+from django.core.mail import send_mail
+from django.template.loader import render_to_string
+
 class RegistrantAdmin(admin.ModelAdmin):
     list_display = ('name',)
     readonly_fields = ['timestamp']
     list_filter = ['payed', 'rate_reduced', 'canceled', 'team']
+    actions = ['welcome_mail',]
+
+    @admin.action(description='Send welcome mail again...')
+    def welcome_mail(self, request, queryset):
+        for reg in queryset:
+            msg_plain = render_to_string('welcome_mail.txt', {"form": reg})
+            msg_html = render_to_string('welcome_mail.html', {"form": reg})
+            send_mail(f'Herzlich Willkommen zur Im·Puls-Tagung, {reg.name}', msg_plain, 'buero@im-puls.org', [f"{reg.mail}"], fail_silently=False, html_message=msg_html)
+            send_mail(f'Neue Anmeldung: {reg.name}', msg_plain, 'buero@im-puls.org', ["webmaster@denkena-consulting.com"], fail_silently=False, html_message=msg_html)
 
 admin.site.register(Registrant, RegistrantAdmin)
 admin.site.register(Author)

website/views.py

@@ -90,7 +90,7 @@ def failure(request):
 
 def mail(request):
     #context = {"form": Registrant.objects.all()[6]}
-    return render(request, 'mail.html',)
+    return render(request, 'welcome_mail.html',)
 
 def anmeldung(request):
     if request.method == 'POST':
@@ -100,8 +100,8 @@ def anmeldung(request):
             form =  register_form.cleaned_data
             name = register_form.cleaned_data["name"]
             mail = register_form.cleaned_data["mail"]
-            msg_plain = render_to_string('mail.txt', {"form": form})
-            msg_html = render_to_string('mail.html', {"form": form})
+            msg_plain = render_to_string('welcome_mail.txt', {"form": form})
+            msg_html = render_to_string('welcome_mail.html', {"form": form})
             send_mail(f'Herzlich Willkommen zur Im·Puls-Tagung, {name}', msg_plain, 'buero@im-puls.org', ["xenia.medvedeva@posteo.de","buero@im-puls.org","webmaster@denkena-consulting.com"], fail_silently=False, html_message=msg_html)
             send_mail(f'Herzlich Willkommen zur Im·Puls-Tagung, {name}', msg_plain, 'buero@im-puls.org', [mail], fail_silently=False, html_message=msg_html)
             register_form = RegisterForm()