LIL-268, LIL-269. Hide payment button

apps/course/templates/course/course.html

@@ -25,14 +25,16 @@
         </div>
         <div class="go__title">Вернуться</div>
       </a>
-      <button 
+      {% if not paid or not pending %}
+      <a
         class="go__btn btn btn_md"
         {% if user.is_authenticated %}
-        data-popup=".js-popup-buy"
+        href="{% url 'course-checkout' course.id %}"
         {% else %}
         data-popup=".js-popup-auth"
         {% endif %}
-        >КУПИТЬ КУРС</button>
+        >КУПИТЬ КУРС</a>
+      {% endif %}
     </div>
     <div
       class="course"

apps/course/views.py

@@ -8,6 +8,8 @@ from django.views.generic import View, CreateView, DetailView, ListView, Templat
 from django.utils.decorators import method_decorator
 from django.views.decorators.csrf import csrf_exempt
 from django.views.decorators.http import require_http_methods
+
+from apps.payment.models import AuthorBalance
 from .models import Course, Like, Lesson, CourseComment, LessonComment
 from .filters import CourseFilter
 
@@ -187,6 +189,14 @@ class CourseView(DetailView):
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
         context['next'] = self.request.GET.get('next', None)
+        context['paid'] = self.object.payments.filter(
+            user=self.request.user,
+            authorbalance__status=AuthorBalance.ACCEPTED,
+        ).exists()
+        context['pending'] = self.object.payments.filter(
+            user=self.request.user,
+            authorbalance__status=AuthorBalance.PENDING,
+        ).exists()
         return context
 
     def get_queryset(self):