Adding host environment variable

Author: hhacot

DRAW-post-processing/database_connection.py

@@ -13,21 +13,20 @@
 db_user=os.environ.get('DRAW_local_db_user')
 db_passwd=os.environ.get('DRAW_local_db_pass')
 db_name=os.environ.get('DRAW_local_db_name')
-#db_name="climate_test"
-#db_name="climatedatarescueprocessed"
+db_host=os.environ.get('DRAW_db_host')
+
 # connection to copy of database on local machine
 conn = mysql.connector.connect(
     #####   FOLLOWING 3 VARIABLES TO BE CONFIGURED AS NECESSARY FOR LOCAL MACHINE:   #####
     user=db_user,
     password=db_passwd,
     database=db_name,
-    host='localhost'
+    host=db_host
 )
 
 cursor = conn.cursor()
 
-url = "mysql+mysqlconnector://"+db_user+":"+db_passwd+"@localhost/"+db_name
-#url = "mysql+mysqlconnector://"+'user'+":"+'password'+"@localhost/climatedatarescue"
+url = "mysql+mysqlconnector://"+db_user+":"+db_passwd+"@l"+db_host+"/"+db_name
 engine = sqlalchemy.create_engine(url)