Hi Anthony,
That worked, maybe the docs should be updated.
I did try migrate=False, thought they were both the same thing.
Regards,
Nils
On Fri, Jul 22, 2011 at 3:05 PM, Anthony abasta...@gmail.com wrote:
Have all the tables already been created in the slave databases (web2py may
be trying to create tables or run migrations)? What happens if you do:
db = DAL(shuffle(['connection string']), migrate_enabled=False)
Anthony
On Friday, July 22, 2011 9:28:40 AM UTC-4, Nils Olofsson wrote:
Hi, I did something similar,
if add in request.function:
db = DAL(['mysql://Database connection string'])
else:
print Using Slave Database
db = DAL(shuffle(['database connection string'])
That would and uses the slave database (readonly) but, I get this
error message.
InternalError: (1290, u'The MySQL server is running with the --read-
only option so it cannot execute this statement')
bar this function add and auth all other functions read data.
I looked around at the DAL code and could not find a way to tell the
DAL that mysql is read only.
any ideas ?
Regards,
Nils
On Jul 22, 1:58 pm, Anthony abas...@gmail.com wrote:
You could define 'read_only_actions' anywhere it makes sense, for
example:
read_only_actions =
['list','another_read_action','yet_another_read_action']
if request.function in read_only_actions:
db =... ...
else
db =
Of course, if that one 'if' statement is the only place you refer to
'read_only_actions', then there's no need to define it as a separate
variable -- you could just put the list right in the 'if' statement. I
think
'read_only_actions' was used in the book example just to indicate the
idea
that you would use the slave databases for actions that don't need to
write
to the db -- it's just a stand-in for an actual list of such actions.
Anthony
On Friday, July 22, 2011 6:50:31 AM UTC-4, Nils Olofsson wrote:
Hi,
I'm still not sure as to how to go about using this.
Say, I have a controller with the function list: and a function called
write:
if the function is list then read from slaves, if the function is
write, write to master.
So the correct code should be:
if request.function in read_only_action:
db =... ...
else
db =
and this is in the model/db.py file.
I just don't understand where to define read_only_action or it is
used ?
Regards,
Nils
On Jul 21, 9:16 pm, Anthony aba...@gmail.com wrote:
That's just some (incomplete) example code. You have to define
'read_only_actions' yourself. In that example, it would be a list
functions
that only need to read (but not write) the database and can
therefore be
given access to one of the slave databases.
Actually, it looks like the code has an error -- it should say
request.function, not request.action -- I'll make the change.
Anthony
On Thursday, July 21, 2011 3:54:20 PM UTC-4, Nils Olofsson wrote:
Hi,
I did this but i got :
Traceback (most recent call last):
File /var/www/web2py/gluon/restricted.py, line 192, in
restricted
exec ccode in environment
File /var/www/web2py/applications/Event/models/db.py, line 18,
in
module
if request.action in read_only_actions:
NameError: name 'read_only_actions' is not defined
type 'exceptions.NameError'(name 'read_only_actions' is not
defined)
This error is the reason i asked where it should go.
Maybe some one could shed some light on it ?
Regards,
Nils
On Jul 21, 7:44 pm, Anthony aba...@gmail.com wrote:
It would go in your model file -- the same place where you would
normally
define the db connection.
Anthony
On Thursday, July 21, 2011 2:29:45 PM UTC-4, Nils Olofsson
wrote:
Hi Massimo,
I'm testing amazon's RDS and EC2 , 1 master many slaves.
I could not find out where exactly I am suppose to be putting
this
code.
Regards,
Nils
On Jul 21, 6:48 pm, Massimo Di Pierro mas...@gmail.com
wrote:
You would only use this if you have a replicated database.
I.e.
you
are running many database servers synced with each other.
For
example:
http://en.wikipedia.org/wiki/Multi-master_replication
On Jul 21, 12:44 pm, Nils Olofsson nil...@gmail.com wrote:
Hi,
I see this in the Documentation:
if request.action in read_only_actions:
db =
DAL(shuffle(['mysql://...1','mysql://...2','mysql://...3']))
else:
db =
DAL(shuffle(['mysql://...3','mysql://...4','mysql://...5']))
I'm not sure where exactly I should be using this ?
And does anyone have some sample code as to how it should
be
used ?
Nils
