Override default fetch_from_api and add a caching layer

flask_discord/models/connections.py

@@ -1,5 +1,6 @@
 from .base import DiscordModelsBase
 from .integration import Integration
+from flask import current_app, session
 
 
 class UserConnection(DiscordModelsBase):
@@ -53,3 +54,32 @@ class UserConnection(DiscordModelsBase):
     def is_visible(self):
         """A property returning bool if this integration is visible to everyone."""
         return bool(self.visibility)
+
+    @classmethod
+    def fetch_from_api(cls, cache=True):
+        """A class method which returns an instance or list of instances of this model by implicitly making an
+        API call to Discord. If an instance of :py:class:`flask_discord.User` exists in the users internal cache
+        who are attached to these connections then, the cached property :py:attr:`flask_discord.User.connections`
+        is updated.
+
+        Parameters
+        ----------
+        cache : bool
+            Determines if the :py:attr:`flask_discord.User.guilds` cache should be updated with the new guilds.
+
+        Returns
+        -------
+        list[flask_discord.UserConnection, ...]
+            List of instances of :py:class:`flask_discord.UserConnection` to which this user belongs.
+
+        """
+        connections = super().fetch_from_api()
+
+        if cache:
+            user = current_app.discord.users_cache.get(session.get("DISCORD_USER_ID"))
+            try:
+                user.connections = connections
+            except AttributeError:
+                pass
+
+        return connections