Fixed csvimport to load in table dependency order.

pokedex/__init__.py

@@ -29,17 +29,11 @@ def csvimport(engine_uri, directory='.'):
 
     metadata.create_all()
 
-    # Oh, mysql-chan.
-    # TODO try to insert data in preorder so we don't need this hack and won't
-    #      break similarly on other engines
-    if 'mysql' in engine_uri:
-        session.execute('SET FOREIGN_KEY_CHECKS = 0')
-
     # SQLAlchemy is retarded and there is no way for me to get a list of ORM
     # classes besides to inspect the module they all happen to live in for
     # things that look right.
     table_base = tables_module.TableBase
-    orm_classes = {}
+    orm_classes = {}  # table object => table class
 
     for name in dir(tables_module):
         # dir() returns strings!  How /convenient/.
@@ -56,10 +50,13 @@ def csvimport(engine_uri, directory='.'):
             continue
 
         # thingy is definitely a table class!  Hallelujah.
-        orm_classes[thingy.__table__.name] = thingy
+        orm_classes[thingy.__table__] = thingy
 
     # Okay, run through the tables and actually load the data now
-    for table_name, table in sorted(orm_classes.items()):
+    for table_obj in metadata.sorted_tables:
+        table_class = orm_classes[table_obj]
+        table_name = table_obj.name
+
         # Print the table name but leave the cursor in a fixed column
         print table_name + '...', ' ' * (40 - len(table_name)),
 
@@ -74,10 +71,10 @@ def csvimport(engine_uri, directory='.'):
         column_names = [unicode(column) for column in reader.next()]
 
         for csvs in reader:
-            row = table()
+            row = table_class()
 
             for column_name, value in zip(column_names, csvs):
-                column = table.__table__.c[column_name]
+                column = table_obj.c[column_name]
                 if column.nullable and value == '':
                     # Empty string in a nullable column really means NULL
                     value = None
@@ -99,11 +96,6 @@ def csvimport(engine_uri, directory='.'):
         session.commit()
         print 'loaded'
 
-    # Shouldn't matter since this is usually the end of the program and thus
-    # the connection too, but let's change this back just in case
-    if 'mysql' in engine_uri:
-        session.execute('SET FOREIGN_KEY_CHECKS = 1')
-
 
 def csvexport(engine_uri, directory='.'):
     import csv