Re: [web2py] Re: storeing a db set in a storage for a map plugin
On 20/07/2011 00:34, Anthony wrote: Objects defined in your models and controllers do not survive from request to request (unless, of course, you store them somewhere, like the session). In your code, the Set object is created when you visit /default/index, but the select happens when you visit /plugin_openplayers/index, which happens in a different request, so the Set object no longer exists. ok, in this case I need to pass a db set that cannot be stored in session (right?)... what's the right way to do that? thanks Manuele Anthony
Re: [web2py] Re: storeing a db set in a storage for a map plugin
On 20/07/2011 08:44, Manuele Pesenti wrote: ok, in this case I need to pass a db set that cannot be stored in session (right?)... what's the right way to do that? would it be the case to use tha global declaretion such as is explained here for example? http://effbot.org/pyfaq/how-do-you-set-a-global-variable-in-a-function.htm thanks Manuele
Re: [web2py] Re: storeing a db set in a storage for a map plugin
No, the Set object has to be defined during the same request as the select, so you should either define it in a model file (as in the plugin_gmap example), or in the /plugin_openplayers/index function (where the select happens). Alternatively, you could define a function that does the work of /plugin_openplayers/index and put the function in a model file or in a module, and then call that function from /default/index after you define the Set there (note, if you put the function in a module, you must import it to use it, and in order to reference the request variables, you either have to pass them explicitly as an argument to the function, or your module has to import the 'current' object, and your module code can then reference current.request.vars). Anthony On Wednesday, July 20, 2011 5:52:08 AM UTC-4, Manuele wrote: On 20/07/2011 08:44, Manuele Pesenti wrote: ok, in this case I need to pass a db set that cannot be stored in session (right?)... what's the right way to do that? would it be the case to use tha global declaretion such as is explained here for example? http://effbot.org/pyfaq/how-do-you-set-a-global-variable-in-a-function.htm thanks Manuele
[web2py] Re: storeing a db set in a storage for a map plugin
Objects defined in your models and controllers do not survive from request to request (unless, of course, you store them somewhere, like the session). In your code, the Set object is created when you visit /default/index, but the select happens when you visit /plugin_openplayers/index, which happens in a different request, so the Set object no longer exists. Anthony On Tuesday, July 19, 2011 5:13:18 PM UTC-4, Manuele wrote: Hi *: I'm trying to implement an essential version of a plugin_openlayers starting from the job made by Massimo with plugin_gmap but I don't understand how the db set is passed from a controller to the plugin_* controller, well even if it seams clear setting the data set in a storage defined in a model seams not to work and I obtains: File /home/manuele/Dropbox/sviluppo/web2py-1.96.4/applications/wind2pow2/controllers/plugin_openlayers.py, line 8, in index rows = plugin_openlayers.set.select() AttributeError: 'NoneType' object has no attribute 'select' so it seams that when I fix the new value in the plugin_openlayers storage in my controller function it does not change the value in the storage defined in model. I hope to be clear can you help me please? I leave you here under some example code... models/plugin_openlayers.py from gluon.storage import Storage plugin_openlayers=Storage() controllers/plugin_openlayers.py def index(): width = request.vars.width or 400 height = request.vars.height or 300 rows = plugin_openlayers.set.select() return dict(width=width, height=height, rows=rows) controllers/default.py def index(): site_id = request.vars.item_id plugin_openlayers.set = db(db.site.id==site_id) return dict() thank you very much Manuele
