Initializing Midgard environment in Python

1. Henri Bergius

   Initializing Midgard environment in Python

   Sat March 21 2009 12:39:55 UTC

   Hi, all

   If you ever want to write a Midgard-powered Python application that needs to use its own storage setup, here is how to initialize a full Midgard environment:

   # Import the Midgard API module
   import _midgard as midgard
   import os
   
   # Prepare a configuration file if one doesn't exist yet, see
   # http://www.midgard-project.org/documentation/unified-configuration/
   config_name = 'my_midgard_db'
   configuration = midgard.config()
   configuration.dbtype = 'SQLite'
   configuration.database = 'my_midgard_db'
   configuration.blobdir = os.path.join(os.path.expanduser("~"), "midgardblobs");
   configuration.loglevel = 'message'
   print "Saving configuration file " + config_name
   configuration.save_file(config_name)
   
   # Open a connection to the database defined in the configuration
   connection = midgard.connection()
   print "Opening configuration"
   connection.open_config(configuration)
   
   # Prepare storage tables
   
   # Midgard's internal tables
   print "Creating Midgard's internal database tables"
   configuration.create_midgard_tables()
   
   # Tables for all loaded MgdSchema types, see
   # http://www.midgard-project.org/documentation/mgdschema-file/
   for schema in dir(midgard.mgdschema):
       if schema.startswith('__'):
           continue
       if schema == 'midgard_object':
           continue
       print "Creating table for " + schema
       configuration.create_class_table(schema)
   
   # Prepare the storage directories for binary attachments
   print "Creating blob directory"
   configuration.create_blobdir()
   
   # ...And now your Midgard environment should be operational
   

   /Henri

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2. Henri Bergius

   Re: [midgard-user] Initializing Midgard environment in Python

   Tue March 24 2009 11:50:06 UTC
   Hi,
   
   On Sat, Mar 21, 2009 at 2:39 PM, Henri Bergius <henri.bergius@iki.fi> wrote:
   >    # http://www.midgard-project.org/documentation/unified-configuration/
   >    config_name = 'my_midgard_db'
   >    configuration = midgard.config()
   >    configuration.dbtype = 'SQLite'
   >    configuration.database = 'my_midgard_db'
   >    configuration.blobdir = os.path.join(os.path.expanduser("~"), "midgardblobs");
   >    configuration.loglevel = 'message'
   >    print "Saving configuration file " + config_name
   >    configuration.save_file(config_name)
   
   Major omission here:
   
   configuration.tablecreate = true
   
   Without this, Midgard will not be able to create the tables.
   
   --
   Henri Bergius
   Motorcycle Adventures and Free Software
   http://bergie.iki.fi/
   
   Skype: henribergius
   Jabber: henri.bergius@gmail.com
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   Sent from: Rome Lazio Italy.
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