Re: [google-appengine] Re: EntityProto instance to Model instance?
Ok, cheers Nick. 2010/1/20 Nick Johnson (Google) > Hi Nickolas, > > On Tue, Jan 19, 2010 at 1:09 AM, Nickolas Daskalou wrote: > >> I've managed to get this going, with the help of the comments in this >> thread and Nick Johnson's blog post ( >> http://blog.notdot.net/2009/11/API-call-hooks-for-fun-and-profit). >> >> My hook code now looks like this: >> >> >> def hook(service, call, request, response): >> assert service == 'datastore_v3' >> if call == 'Put': >> for i in range(request.entity_size()): >> entity_pb = request.mutable_entity(i) >> entity = db.model_from_protobuf(entity_pb) >> try: >> entity.pre_put() >> entity_pb.CopyFrom(db.model_to_protobuf(entity)) >> except: >> pass >> >> This seems highly inefficient though, because before an entity is put into >> the Datastore, it's converted from a Model instance to an EntityProto >> instance, then back to a Model instance and finally back to an EntityProto >> instance (Model->EntityProto->Model->EntityProto). >> >> Google guys, is there a more efficient way to do this? >> > > Monkeypatching the db module to call pre_put in the appropriate place would > be a better way to do this, though it's subject to breakage as the API > changes. > > -Nick Johnson > > >> >> 2010/1/18 Nickolas Daskalou >> >> Will do, thanks Andy. >>> >>> >>> 2010/1/18 Andy Freeman >>> I asked that question wrt db.class_for_kind and was told that it was safe to assume that it would always be there. I'd guess that model_from_protobuf should be safe as well. File a bug requesting that it be added to the documented function list. On Jan 17, 6:26 pm, Nickolas Daskalou wrote: > Since these are not documented online anywhere, is it possible these > functions may change in the future (and hence break my code)? > > 2010/1/18 Andy Freeman > > > > > Search in google/appengine/ext/db/__init__.py for protobuf functions. > > > On Jan 16, 9:21 pm, Nickolas Daskalou wrote: > > > Does anyone have an answer for this? Google guys? > > > > 2010/1/15 Kapil Kaisare > > > > > As an aside: what is an EntityProto, and is there a link in the GAE > > > > documentation for it? > > > > > Regards, > > > > Kaisare, Kapil Sadashiv > > > > > On Fri, Jan 15, 2010 at 09:37, Nickolas Daskalou < n...@daskalou.com > > >wrote: > > > > >> How can I convert an EntityProto to a Model instance? > > > > >> I have a Model method, pre_put(), that I want to call on each Model > > > >> instance before it's Put into the Datastore, using hooks (eg: > > > >>http://code.google.com/appengine/articles/hooks.html). > > > > >> My hook code looks like this: > > > > >> def hook(service, call, request, response): > > > >> assert service == 'datastore_v3' > > > >> if call == 'Put': > > > >> for entity in request.entity_list(): > > > >> entity.pre_put() > > > > >> When the hook is called and runs, I get this error: > > > > >> AttributeError: EntityProto instance has no attribute 'pre_put' > > > > >> Is there any way to convert the entities in request.entity_list() to > > their > > > >> original Models, manipulate them, and then convert them back to an > > > >> EntityProto instance? Or even better, if the EntityProto instances > > have > > > >> references to the actual Model instances which we can access and > > manipulate? > > > > >> -- > > > >> You received this message because you are subscribed to the Google > > Groups > > > >> "Google App Engine" group. > > > >> To post to this group, send email to > > google-appeng...@googlegroups.com. > > > >> To unsubscribe from this group, send email to > > > >> google-appengine+unsubscr...@googlegroups.com > > > > > >> . > > > >> For more options, visit this group at > > > >>http://groups.google.com/group/google-appengine?hl=en. > > > > > -- > > > > You received this message because you are subscribed to the Google > > Groups > > > > "Google App Engine" group. > > > > To post to this group, send email to google-appengine@googlegroups.com > > . > > > > To unsubscribe from this group, send email to > > > > google-appengine+unsubscr...@googlegroups.com > > > > > > . > > > > For more options, visit this group at > > > >http://groups.google.com/group/google-appengine?hl=en.-Hidequoted > > text - > > > > - Show quoted text - > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google App Engine" group. >
Re: [google-appengine] Re: EntityProto instance to Model instance?
Hi Nickolas, On Tue, Jan 19, 2010 at 1:09 AM, Nickolas Daskalou wrote: > I've managed to get this going, with the help of the comments in this > thread and Nick Johnson's blog post ( > http://blog.notdot.net/2009/11/API-call-hooks-for-fun-and-profit). > > My hook code now looks like this: > > > def hook(service, call, request, response): > assert service == 'datastore_v3' > if call == 'Put': > for i in range(request.entity_size()): > entity_pb = request.mutable_entity(i) > entity = db.model_from_protobuf(entity_pb) > try: > entity.pre_put() > entity_pb.CopyFrom(db.model_to_protobuf(entity)) > except: > pass > > This seems highly inefficient though, because before an entity is put into > the Datastore, it's converted from a Model instance to an EntityProto > instance, then back to a Model instance and finally back to an EntityProto > instance (Model->EntityProto->Model->EntityProto). > > Google guys, is there a more efficient way to do this? > Monkeypatching the db module to call pre_put in the appropriate place would be a better way to do this, though it's subject to breakage as the API changes. -Nick Johnson > > 2010/1/18 Nickolas Daskalou > > Will do, thanks Andy. >> >> >> 2010/1/18 Andy Freeman >> >>> I asked that question wrt db.class_for_kind and was told that it was >>> safe to assume that it would always be there. >>> >>> I'd guess that model_from_protobuf should be safe as well. >>> >>> File a bug requesting that it be added to the documented function >>> list. >>> >>> On Jan 17, 6:26 pm, Nickolas Daskalou wrote: >>> > Since these are not documented online anywhere, is it possible these >>> > functions may change in the future (and hence break my code)? >>> > >>> > 2010/1/18 Andy Freeman >>> > >>> > >>> > >>> > > Search in google/appengine/ext/db/__init__.py for protobuf functions. >>> > >>> > > On Jan 16, 9:21 pm, Nickolas Daskalou wrote: >>> > > > Does anyone have an answer for this? Google guys? >>> > >>> > > > 2010/1/15 Kapil Kaisare >>> > >>> > > > > As an aside: what is an EntityProto, and is there a link in the >>> GAE >>> > > > > documentation for it? >>> > >>> > > > > Regards, >>> > > > > Kaisare, Kapil Sadashiv >>> > >>> > > > > On Fri, Jan 15, 2010 at 09:37, Nickolas Daskalou < >>> n...@daskalou.com >>> > > >wrote: >>> > >>> > > > >> How can I convert an EntityProto to a Model instance? >>> > >>> > > > >> I have a Model method, pre_put(), that I want to call on each >>> Model >>> > > > >> instance before it's Put into the Datastore, using hooks (eg: >>> > > > >>http://code.google.com/appengine/articles/hooks.html). >>> > >>> > > > >> My hook code looks like this: >>> > >>> > > > >> def hook(service, call, request, response): >>> > > > >> assert service == 'datastore_v3' >>> > > > >> if call == 'Put': >>> > > > >> for entity in request.entity_list(): >>> > > > >> entity.pre_put() >>> > >>> > > > >> When the hook is called and runs, I get this error: >>> > >>> > > > >> AttributeError: EntityProto instance has no attribute 'pre_put' >>> > >>> > > > >> Is there any way to convert the entities in >>> request.entity_list() to >>> > > their >>> > > > >> original Models, manipulate them, and then convert them back to >>> an >>> > > > >> EntityProto instance? Or even better, if the EntityProto >>> instances >>> > > have >>> > > > >> references to the actual Model instances which we can access and >>> > > manipulate? >>> > >>> > > > >> -- >>> > > > >> You received this message because you are subscribed to the >>> Google >>> > > Groups >>> > > > >> "Google App Engine" group. >>> > > > >> To post to this group, send email to >>> > > google-appeng...@googlegroups.com. >>> > > > >> To unsubscribe from this group, send email to >>> > > > >> google-appengine+unsubscr...@googlegroups.com >>> >>> > > >>> > > > >> . >>> > > > >> For more options, visit this group at >>> > > > >>http://groups.google.com/group/google-appengine?hl=en. >>> > >>> > > > > -- >>> > > > > You received this message because you are subscribed to the >>> Google >>> > > Groups >>> > > > > "Google App Engine" group. >>> > > > > To post to this group, send email to >>> google-appengine@googlegroups.com >>> > > . >>> > > > > To unsubscribe from this group, send email to >>> > > > > google-appengine+unsubscr...@googlegroups.com >>> >>> > > >>> > > > > . >>> > > > > For more options, visit this group at >>> > > > >http://groups.google.com/group/google-appengine?hl=en.-Hidequoted >>> > > text - >>> > >>> > > > - Show quoted text - >>> > >>> > > -- >>> > > You received this message because you are subscribed to the Google >>> Groups >>> > > "Google App Engine" group. >>> > > To post to this group, send email to >>> google-appeng...@googlegroups.com. >>> > > To unsubscribe from this group, send email to >>> > > google-appengine+unsubscr...@googlegroups.com >>> >>> > > . >>> > > For more
Re: [google-appengine] Re: EntityProto instance to Model instance?
I've managed to get this going, with the help of the comments in this thread and Nick Johnson's blog post ( http://blog.notdot.net/2009/11/API-call-hooks-for-fun-and-profit). My hook code now looks like this: def hook(service, call, request, response): assert service == 'datastore_v3' if call == 'Put': for i in range(request.entity_size()): entity_pb = request.mutable_entity(i) entity = db.model_from_protobuf(entity_pb) try: entity.pre_put() entity_pb.CopyFrom(db.model_to_protobuf(entity)) except: pass This seems highly inefficient though, because before an entity is put into the Datastore, it's converted from a Model instance to an EntityProto instance, then back to a Model instance and finally back to an EntityProto instance (Model->EntityProto->Model->EntityProto). Google guys, is there a more efficient way to do this? 2010/1/18 Nickolas Daskalou > Will do, thanks Andy. > > > 2010/1/18 Andy Freeman > >> I asked that question wrt db.class_for_kind and was told that it was >> safe to assume that it would always be there. >> >> I'd guess that model_from_protobuf should be safe as well. >> >> File a bug requesting that it be added to the documented function >> list. >> >> On Jan 17, 6:26 pm, Nickolas Daskalou wrote: >> > Since these are not documented online anywhere, is it possible these >> > functions may change in the future (and hence break my code)? >> > >> > 2010/1/18 Andy Freeman >> > >> > >> > >> > > Search in google/appengine/ext/db/__init__.py for protobuf functions. >> > >> > > On Jan 16, 9:21 pm, Nickolas Daskalou wrote: >> > > > Does anyone have an answer for this? Google guys? >> > >> > > > 2010/1/15 Kapil Kaisare >> > >> > > > > As an aside: what is an EntityProto, and is there a link in the >> GAE >> > > > > documentation for it? >> > >> > > > > Regards, >> > > > > Kaisare, Kapil Sadashiv >> > >> > > > > On Fri, Jan 15, 2010 at 09:37, Nickolas Daskalou < >> n...@daskalou.com >> > > >wrote: >> > >> > > > >> How can I convert an EntityProto to a Model instance? >> > >> > > > >> I have a Model method, pre_put(), that I want to call on each >> Model >> > > > >> instance before it's Put into the Datastore, using hooks (eg: >> > > > >>http://code.google.com/appengine/articles/hooks.html). >> > >> > > > >> My hook code looks like this: >> > >> > > > >> def hook(service, call, request, response): >> > > > >> assert service == 'datastore_v3' >> > > > >> if call == 'Put': >> > > > >> for entity in request.entity_list(): >> > > > >> entity.pre_put() >> > >> > > > >> When the hook is called and runs, I get this error: >> > >> > > > >> AttributeError: EntityProto instance has no attribute 'pre_put' >> > >> > > > >> Is there any way to convert the entities in request.entity_list() >> to >> > > their >> > > > >> original Models, manipulate them, and then convert them back to >> an >> > > > >> EntityProto instance? Or even better, if the EntityProto >> instances >> > > have >> > > > >> references to the actual Model instances which we can access and >> > > manipulate? >> > >> > > > >> -- >> > > > >> You received this message because you are subscribed to the >> Google >> > > Groups >> > > > >> "Google App Engine" group. >> > > > >> To post to this group, send email to >> > > google-appeng...@googlegroups.com. >> > > > >> To unsubscribe from this group, send email to >> > > > >> google-appengine+unsubscr...@googlegroups.com >> >> > > >> > > > >> . >> > > > >> For more options, visit this group at >> > > > >>http://groups.google.com/group/google-appengine?hl=en. >> > >> > > > > -- >> > > > > You received this message because you are subscribed to the Google >> > > Groups >> > > > > "Google App Engine" group. >> > > > > To post to this group, send email to >> google-appengine@googlegroups.com >> > > . >> > > > > To unsubscribe from this group, send email to >> > > > > google-appengine+unsubscr...@googlegroups.com >> >> > > >> > > > > . >> > > > > For more options, visit this group at >> > > > >http://groups.google.com/group/google-appengine?hl=en.-Hide quoted >> > > text - >> > >> > > > - Show quoted text - >> > >> > > -- >> > > You received this message because you are subscribed to the Google >> Groups >> > > "Google App Engine" group. >> > > To post to this group, send email to >> google-appeng...@googlegroups.com. >> > > To unsubscribe from this group, send email to >> > > google-appengine+unsubscr...@googlegroups.com >> >> > > . >> > > For more options, visit this group at >> > >http://groups.google.com/group/google-appengine?hl=en.- Hide quoted >> text - >> > >> > - Show quoted text - >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Google App Engine" group. >> To post to this group, send email to google-appeng...@googlegroups.com. >> To unsubscribe from this group, send email to >> google-appengine+unsubscr
Re: [google-appengine] Re: EntityProto instance to Model instance?
Will do, thanks Andy. 2010/1/18 Andy Freeman > I asked that question wrt db.class_for_kind and was told that it was > safe to assume that it would always be there. > > I'd guess that model_from_protobuf should be safe as well. > > File a bug requesting that it be added to the documented function > list. > > On Jan 17, 6:26 pm, Nickolas Daskalou wrote: > > Since these are not documented online anywhere, is it possible these > > functions may change in the future (and hence break my code)? > > > > 2010/1/18 Andy Freeman > > > > > > > > > Search in google/appengine/ext/db/__init__.py for protobuf functions. > > > > > On Jan 16, 9:21 pm, Nickolas Daskalou wrote: > > > > Does anyone have an answer for this? Google guys? > > > > > > 2010/1/15 Kapil Kaisare > > > > > > > As an aside: what is an EntityProto, and is there a link in the GAE > > > > > documentation for it? > > > > > > > Regards, > > > > > Kaisare, Kapil Sadashiv > > > > > > > On Fri, Jan 15, 2010 at 09:37, Nickolas Daskalou < > n...@daskalou.com > > > >wrote: > > > > > > >> How can I convert an EntityProto to a Model instance? > > > > > > >> I have a Model method, pre_put(), that I want to call on each > Model > > > > >> instance before it's Put into the Datastore, using hooks (eg: > > > > >>http://code.google.com/appengine/articles/hooks.html). > > > > > > >> My hook code looks like this: > > > > > > >> def hook(service, call, request, response): > > > > >> assert service == 'datastore_v3' > > > > >> if call == 'Put': > > > > >> for entity in request.entity_list(): > > > > >> entity.pre_put() > > > > > > >> When the hook is called and runs, I get this error: > > > > > > >> AttributeError: EntityProto instance has no attribute 'pre_put' > > > > > > >> Is there any way to convert the entities in request.entity_list() > to > > > their > > > > >> original Models, manipulate them, and then convert them back to an > > > > >> EntityProto instance? Or even better, if the EntityProto instances > > > have > > > > >> references to the actual Model instances which we can access and > > > manipulate? > > > > > > >> -- > > > > >> You received this message because you are subscribed to the Google > > > Groups > > > > >> "Google App Engine" group. > > > > >> To post to this group, send email to > > > google-appeng...@googlegroups.com. > > > > >> To unsubscribe from this group, send email to > > > > >> google-appengine+unsubscr...@googlegroups.com > > > > > > > > >> . > > > > >> For more options, visit this group at > > > > >>http://groups.google.com/group/google-appengine?hl=en. > > > > > > > -- > > > > > You received this message because you are subscribed to the Google > > > Groups > > > > > "Google App Engine" group. > > > > > To post to this group, send email to > google-appengine@googlegroups.com > > > . > > > > > To unsubscribe from this group, send email to > > > > > google-appengine+unsubscr...@googlegroups.com > > > > > > > > > . > > > > > For more options, visit this group at > > > > >http://groups.google.com/group/google-appengine?hl=en.-Hide quoted > > > text - > > > > > > - Show quoted text - > > > > > -- > > > You received this message because you are subscribed to the Google > Groups > > > "Google App Engine" group. > > > To post to this group, send email to google-appengine@googlegroups.com > . > > > To unsubscribe from this group, send email to > > > google-appengine+unsubscr...@googlegroups.com > > > > . > > > For more options, visit this group at > > >http://groups.google.com/group/google-appengine?hl=en.- Hide quoted > text - > > > > - Show quoted text - > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to google-appeng...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine+unsubscr...@googlegroups.com > . > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appeng...@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
[google-appengine] Re: EntityProto instance to Model instance?
I asked that question wrt db.class_for_kind and was told that it was safe to assume that it would always be there. I'd guess that model_from_protobuf should be safe as well. File a bug requesting that it be added to the documented function list. On Jan 17, 6:26 pm, Nickolas Daskalou wrote: > Since these are not documented online anywhere, is it possible these > functions may change in the future (and hence break my code)? > > 2010/1/18 Andy Freeman > > > > > Search in google/appengine/ext/db/__init__.py for protobuf functions. > > > On Jan 16, 9:21 pm, Nickolas Daskalou wrote: > > > Does anyone have an answer for this? Google guys? > > > > 2010/1/15 Kapil Kaisare > > > > > As an aside: what is an EntityProto, and is there a link in the GAE > > > > documentation for it? > > > > > Regards, > > > > Kaisare, Kapil Sadashiv > > > > > On Fri, Jan 15, 2010 at 09:37, Nickolas Daskalou > >wrote: > > > > >> How can I convert an EntityProto to a Model instance? > > > > >> I have a Model method, pre_put(), that I want to call on each Model > > > >> instance before it's Put into the Datastore, using hooks (eg: > > > >>http://code.google.com/appengine/articles/hooks.html). > > > > >> My hook code looks like this: > > > > >> def hook(service, call, request, response): > > > >> assert service == 'datastore_v3' > > > >> if call == 'Put': > > > >> for entity in request.entity_list(): > > > >> entity.pre_put() > > > > >> When the hook is called and runs, I get this error: > > > > >> AttributeError: EntityProto instance has no attribute 'pre_put' > > > > >> Is there any way to convert the entities in request.entity_list() to > > their > > > >> original Models, manipulate them, and then convert them back to an > > > >> EntityProto instance? Or even better, if the EntityProto instances > > have > > > >> references to the actual Model instances which we can access and > > manipulate? > > > > >> -- > > > >> You received this message because you are subscribed to the Google > > Groups > > > >> "Google App Engine" group. > > > >> To post to this group, send email to > > google-appeng...@googlegroups.com. > > > >> To unsubscribe from this group, send email to > > > >> google-appengine+unsubscr...@googlegroups.com > > > > > >> . > > > >> For more options, visit this group at > > > >>http://groups.google.com/group/google-appengine?hl=en. > > > > > -- > > > > You received this message because you are subscribed to the Google > > Groups > > > > "Google App Engine" group. > > > > To post to this group, send email to google-appengine@googlegroups.com > > . > > > > To unsubscribe from this group, send email to > > > > google-appengine+unsubscr...@googlegroups.com > > > > > > . > > > > For more options, visit this group at > > > >http://groups.google.com/group/google-appengine?hl=en.-Hide quoted > > text - > > > > - Show quoted text - > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google App Engine" group. > > To post to this group, send email to google-appeng...@googlegroups.com. > > To unsubscribe from this group, send email to > > google-appengine+unsubscr...@googlegroups.com > > . > > For more options, visit this group at > >http://groups.google.com/group/google-appengine?hl=en.- Hide quoted text - > > - Show quoted text - -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appeng...@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
Re: [google-appengine] Re: EntityProto instance to Model instance?
Since these are not documented online anywhere, is it possible these functions may change in the future (and hence break my code)? 2010/1/18 Andy Freeman > Search in google/appengine/ext/db/__init__.py for protobuf functions. > > > On Jan 16, 9:21 pm, Nickolas Daskalou wrote: > > Does anyone have an answer for this? Google guys? > > > > 2010/1/15 Kapil Kaisare > > > > > > > > > As an aside: what is an EntityProto, and is there a link in the GAE > > > documentation for it? > > > > > Regards, > > > Kaisare, Kapil Sadashiv > > > > > On Fri, Jan 15, 2010 at 09:37, Nickolas Daskalou >wrote: > > > > >> How can I convert an EntityProto to a Model instance? > > > > >> I have a Model method, pre_put(), that I want to call on each Model > > >> instance before it's Put into the Datastore, using hooks (eg: > > >>http://code.google.com/appengine/articles/hooks.html). > > > > >> My hook code looks like this: > > > > >> def hook(service, call, request, response): > > >> assert service == 'datastore_v3' > > >> if call == 'Put': > > >> for entity in request.entity_list(): > > >> entity.pre_put() > > > > >> When the hook is called and runs, I get this error: > > > > >> AttributeError: EntityProto instance has no attribute 'pre_put' > > > > >> Is there any way to convert the entities in request.entity_list() to > their > > >> original Models, manipulate them, and then convert them back to an > > >> EntityProto instance? Or even better, if the EntityProto instances > have > > >> references to the actual Model instances which we can access and > manipulate? > > > > >> -- > > >> You received this message because you are subscribed to the Google > Groups > > >> "Google App Engine" group. > > >> To post to this group, send email to > google-appeng...@googlegroups.com. > > >> To unsubscribe from this group, send email to > > >> google-appengine+unsubscr...@googlegroups.com > > > >> . > > >> For more options, visit this group at > > >>http://groups.google.com/group/google-appengine?hl=en. > > > > > -- > > > You received this message because you are subscribed to the Google > Groups > > > "Google App Engine" group. > > > To post to this group, send email to google-appengine@googlegroups.com > . > > > To unsubscribe from this group, send email to > > > google-appengine+unsubscr...@googlegroups.com > > > > . > > > For more options, visit this group at > > >http://groups.google.com/group/google-appengine?hl=en.- Hide quoted > text - > > > > - Show quoted text - > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to google-appeng...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine+unsubscr...@googlegroups.com > . > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appeng...@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
[google-appengine] Re: EntityProto instance to Model instance?
Search in google/appengine/ext/db/__init__.py for protobuf functions. On Jan 16, 9:21 pm, Nickolas Daskalou wrote: > Does anyone have an answer for this? Google guys? > > 2010/1/15 Kapil Kaisare > > > > > As an aside: what is an EntityProto, and is there a link in the GAE > > documentation for it? > > > Regards, > > Kaisare, Kapil Sadashiv > > > On Fri, Jan 15, 2010 at 09:37, Nickolas Daskalou wrote: > > >> How can I convert an EntityProto to a Model instance? > > >> I have a Model method, pre_put(), that I want to call on each Model > >> instance before it's Put into the Datastore, using hooks (eg: > >>http://code.google.com/appengine/articles/hooks.html). > > >> My hook code looks like this: > > >> def hook(service, call, request, response): > >> assert service == 'datastore_v3' > >> if call == 'Put': > >> for entity in request.entity_list(): > >> entity.pre_put() > > >> When the hook is called and runs, I get this error: > > >> AttributeError: EntityProto instance has no attribute 'pre_put' > > >> Is there any way to convert the entities in request.entity_list() to their > >> original Models, manipulate them, and then convert them back to an > >> EntityProto instance? Or even better, if the EntityProto instances have > >> references to the actual Model instances which we can access and > >> manipulate? > > >> -- > >> You received this message because you are subscribed to the Google Groups > >> "Google App Engine" group. > >> To post to this group, send email to google-appeng...@googlegroups.com. > >> To unsubscribe from this group, send email to > >> google-appengine+unsubscr...@googlegroups.com > >> . > >> For more options, visit this group at > >>http://groups.google.com/group/google-appengine?hl=en. > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google App Engine" group. > > To post to this group, send email to google-appeng...@googlegroups.com. > > To unsubscribe from this group, send email to > > google-appengine+unsubscr...@googlegroups.com > > . > > For more options, visit this group at > >http://groups.google.com/group/google-appengine?hl=en.- Hide quoted text - > > - Show quoted text - -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appeng...@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
