set access

Main/models/group.py

@@ -1,6 +1,8 @@
 from django.contrib.auth.models import User
 from django.contrib.postgres.fields import ArrayField
 from django.db import models
+from django.utils import timezone
+
 from Main.models.set import Set
 
 
@@ -10,3 +12,7 @@ class Group(models.Model):
     creator = models.ForeignKey(User, null=True, on_delete=models.SET_NULL)
     users = models.ManyToManyField(User, related_name='user_groups')
     editors = ArrayField(models.TextField(), default=list)
+
+    @property
+    def available_sets(self):
+        return self.sets.filter(opened=True, start_time__lte=timezone.now(), end_time__gte=timezone.now())

templates/group.html

@@ -5,9 +5,15 @@
     {% if group.creator %}Владелец группы: <img src="{{ group.creator.userinfo.profile_pic_url }}" width="30px" height="30px" style="border-radius: 50%; margin-right: 10px;"><a href="/account?username={{ group.creator.username }}">{{ group.creator.username }}</a> {% endif %}
     <hr><hr>
     <h2>Сеты</h2>
+    {% if group.creator == user or user.username in group.editors %}
     {% for set in group.sets.all %}
         <a href="/set?set_id={{ set.id }}">{{ set.name }}</a><br>
     {% endfor %}
+    {% else %}
+        {% for set in group.available_sets %}
+        <a href="/set?set_id={{ set.id }}">{{ set.name }}</a><br>
+    {% endfor %}
+    {% endif %}
     {% if group.creator == user or user.username in group.editors %}
         <button type="button" class="btn btn-primary" style="margin-top: 20px;" data-toggle="modal" data-target="#example"><i class="fa fa-pencil"></i> Редактировать</button>
         <div class="modal fade" id="example" tabindex="-1" role="dialog" aria-labelledby="exampleModalLongTitle" aria-hidden="true">