fix date model

app/models/date.py

@@ -1,35 +1,35 @@
-'''
+"""
 All Database models regarding Dates
     ---> Date
 All Marshmallow Schemas regarding those models
     --> DateSchema
-'''
-from app import ma
+"""
 from app.models import db
 
 
 class Date(db.Model):
+    """Date table
+
+    If a specific date is needed, it will be created in this table. A 
+    date is related to users (that specified their availability on that
+    date) and to events (that offer this date). This way, each date will
+    only occure once and it is easy to get an overview of all available
+    users that signed up for that day.
+
+    Relationships:
+        - `dates_users`
+        - `dates_events`
+    """
     __tablename__ = 'dates'
+
     id = db.Column(db.Integer, primary_key=True, unique=True, nullable=False)
     day = db.Column(db.Date, nullable=False, unique=True)
 
-    users = db.relationship('User', secondary='users_dates')
-    events = db.relationship('Event', secondary='events_dates')
+    users = db.relationship('User', secondary='dates_users')
+    events = db.relationship('Event', secondary='dates_events')
 
 
 class DateSchema(ma.Schema):
-    count = ma.Method('count_users')
-
-    def count_users(self, obj: Date):
-        event_id = self.context.get('event_id')
-        users = []
-        for user in obj.users:  # that
-            for ag in user.ags:  # shit
-                for event in ag.events:  # is
-                    if event.id == event_id:  # damn
-                        users.append(user)  # nested
-
-        return len(users)
 
     class Meta:
-        fields = ('id', 'day', 'count')
+        fields = ('id', 'day')