Relationships done, models defined.

Author: mikeckennedy

src/ch9-sqlalchemy/final/pypi_sqlalchemy/pypi/data/packages.py

@@ -1,7 +1,9 @@
 import datetime
 
 import sqlalchemy as sa
+import sqlalchemy.orm as orm
 from pypi.data.modelbase import SqlAlchemyBase
+from pypi.data.releases import Release
 
 
 class Package(SqlAlchemyBase):
@@ -21,8 +23,11 @@ class Package(SqlAlchemyBase):
 
     license = sa.Column(sa.String, index=True)
 
-    # releases
-    # maintainers
+    releases = orm.relation("Release", order_by=[
+        Release.major_ver.desc(),
+        Release.minor_ver.desc(),
+        Release.build_ver.desc(),
+    ], back_populates='package')
 
     def __repr__(self):
         return '<Package {}>'.format(self.id)

src/ch9-sqlalchemy/final/pypi_sqlalchemy/pypi/data/releases.py

@@ -1,6 +1,6 @@
 import datetime
 import sqlalchemy
-from sqlalchemy import orm
+import sqlalchemy.orm as orm
 from pypi.data.modelbase import SqlAlchemyBase
 
 
@@ -19,7 +19,11 @@ class Release(SqlAlchemyBase):
     size = sqlalchemy.Column(sqlalchemy.BigInteger)
 
     # Package relationship
+    package_id = sqlalchemy.Column(sqlalchemy.String, sqlalchemy.ForeignKey('packages.id'))
+    package = orm.relation('Package', back_populates='releases')
 
     @property
     def version_text(self):
         return '{}.{}.{}'.format(self.major_ver, self.minor_ver, self.build_ver)
+
+