Implement 'occurs_in_last_release'

issues/models.py

@@ -97,7 +97,9 @@ class Issue(models.Model):
         ]
 
     def occurs_in_last_release(self):
-        return False  # TODO actually implement (and then: implement in a performant manner)
+        # we can depend on latest_release to exist, because we always create at least one release, even for 'no release'
+        latest_release = self.project.get_latest_release()
+        return latest_release.version in self.events_at
 
     def turningpoint_set_all(self):
         # like turningpoint_set.all() but with user in select_related

issues/templates/issues/issue_list.html

@@ -75,7 +75,7 @@
                             <div class="dropdown-content-right flex-col pl-2">
 
                                 {# note that an if-statement ("issue.occurs_in_last_release") is missing here, because we're not on the level of a single issue #} 
-                                {# handling of that question (but per-issue, and after-click) is left as a TODO on the view #}
+                                {# handling of that question (but per-issue, and after-click) is done in views.py, _q_for_invalid_for_action()  #}
                                 <button name="action" value="resolved_release:{{ project.get_latest_release.version }}" class="block self-stretch font-bold text-slate-500 border-slate-300 pl-4 pr-4 pb-2 pt-2 border-l-2 border-r-2 border-b-2 bg-white hover:bg-slate-200 active:ring text-left whitespace-nowrap">Resolved in latest ({{ project.get_latest_release.get_short_version }})</button>
                             </div>
                         </div> 

projects/models.py

@@ -84,10 +84,12 @@ class Project(models.Model):
         models.Index(fields=["id", "sentry_key"]),
     ]
     """
+
     def get_latest_release(self):
-        # TODO perfomance considerations... this can be denormalized/cached at the project level
         from releases.models import ordered_releases
-        return list(ordered_releases(project=self))[-1]
+        if not hasattr(self, "_latest_release"):
+            self._latest_release = list(ordered_releases(project=self))[-1]
+        return self._latest_release
 
     def save(self, *args, **kwargs):
         if self.slug in [None, ""]: