1 files changed, 54 insertions, 0 deletions
diff --git a/budget/models.py b/budget/models.py
new file mode 100644
index 0000000..27e30b3
--- /dev/null
+++ b/budget/models.py
@@ -0,0 +1,54 @@
+from datetime import datetime
+from flaskext.sqlalchemy import SQLAlchemy
+
+db = SQLAlchemy()
+
+# define models
+class Project(db.Model):
+    id = db.Column(db.String, primary_key=True)
+
+    name = db.Column(db.UnicodeText)
+    password = db.Column(db.String)
+    contact_email = db.Column(db.String)
+    members = db.relationship("Person", backref="project")
+
+    def __repr__(self):
+        return "<Project %s>" % self.name
+
+
+class Person(db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    project_id = db.Column(db.Integer, db.ForeignKey("project.id"))
+    bills = db.relationship("Bill", backref="payer")
+
+    name = db.Column(db.UnicodeText)
+    status = db.Column(db.Boolean)
+
+    def __repr__(self):
+        return "<Person %s for project %s>" % (self.name, self.project.name)
+
+# We need to manually define a join table for m2m relations
+billowers = db.Table('billowers',
+    db.Column('bill_id', db.Integer, db.ForeignKey('bill.id')),
+    db.Column('person_id', db.Integer, db.ForeignKey('person.id')),
+)
+
+class Bill(db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+
+    payer_id = db.Column(db.Integer, db.ForeignKey("person.id"))
+    owers = db.relationship(Person, secondary=billowers)
+
+    amount = db.Column(db.Float)
+    date = db.Column(db.Date, default=datetime.now)
+    what = db.Column(db.UnicodeText)
+
+    def pay_each(self):
+        """Compute what each person has to pay"""
+        return round(self.amount / len(self.owers), 2)
+
+    def __repr__(self):
+        return "<Bill of %s from %s for %s>" % (self.amount,
+                self.payer, ", ".join([o.name for o in self.owers]))
+
+