p31829507
/
django
mirror of https://github.com/django/django.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Untabify multi-db docs.

This commit is contained in:
James Bennett 2012-09-08 16:08:01 -04:00
parent 5d1f09f450
commit 408c10e541
1 changed files with 54 additions and 54 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

108
docs/topics/db/multi-db.txt
View File

@ -242,41 +242,41 @@ send queries for the ``auth`` app to ``auth_db``::
A router to control all database operations on models in the
auth application.
"""
def db_for_read(self, model, **hints):
"""
Attempts to read auth models go to auth_db.
"""
if model._meta.app_label == 'auth':
return 'auth_db'
return None
def db_for_read(self, model, **hints):
"""
Attempts to read auth models go to auth_db.
"""
if model._meta.app_label == 'auth':
return 'auth_db'
return None
def db_for_write(self, model, **hints):
"""
Attempts to write auth models go to auth_db.
"""
if model._meta.app_label == 'auth':
return 'auth_db'
return Non
def db_for_write(self, model, **hints):
"""
Attempts to write auth models go to auth_db.
"""
if model._meta.app_label == 'auth':
return 'auth_db'
return Non
def allow_relation(self, obj1, obj2, **hints):
"""
Allow relations if a model in the auth app is involved.
"""
if obj1._meta.app_label == 'auth' or \
def allow_relation(self, obj1, obj2, **hints):
"""
Allow relations if a model in the auth app is involved.
"""
if obj1._meta.app_label == 'auth' or \
obj2._meta.app_label == 'auth':
return True
return None
return True
return None
def allow_syncdb(self, db, model):
"""
Make sure the auth app only appears in the 'auth_db'
database.
"""
if db == 'auth_db':
return model._meta.app_label == 'auth'
elif model._meta.app_label == 'auth':
return False
return None
def allow_syncdb(self, db, model):
"""
Make sure the auth app only appears in the 'auth_db'
database.
"""
if db == 'auth_db':
return model._meta.app_label == 'auth'
elif model._meta.app_label == 'auth':
return False
return None
And we also want a router that sends all other apps to the
master/slave configuration, and randomly chooses a slave to read
@ -286,32 +286,32 @@ from::
class MasterSlaveRouter(object):
def db_for_read(self, model, **hints):
"""
Reads go to a randomly-chosen slave.
"""
return random.choice(['slave1', 'slave2'])
"""
Reads go to a randomly-chosen slave.
"""
return random.choice(['slave1', 'slave2'])
def db_for_write(self, model, **hints):
"""
Writes always go to master.
"""
return 'master'
def db_for_write(self, model, **hints):
"""
Writes always go to master.
"""
return 'master'
def allow_relation(self, obj1, obj2, **hints):
"""
Relations between objects are allowed if both objects are
in the master/slave pool.
"""
db_list = ('master', 'slave1', 'slave2')
if obj1.state.db in db_list and obj2.state.db in db_list:
return True
return None
def allow_relation(self, obj1, obj2, **hints):
"""
Relations between objects are allowed if both objects are
in the master/slave pool.
"""
db_list = ('master', 'slave1', 'slave2')
if obj1.state.db in db_list and obj2.state.db in db_list:
return True
return None
def allow_syncdb(self, db, model):
"""
All non-auth models end up in this pool.
"""
return True
def allow_syncdb(self, db, model):
"""
All non-auth models end up in this pool.
"""
return True
Finally, in the settings file, we add the following (substituting
``path.to.`` with the actual python path to the module(s) where the