Questions tagged [polymodel]
17 questions
15
votes
1 answer
how to cleanly remove ndb properties
in my app i need to remove a few of my models properties.
i checked out this link but the first issue is that the properties are on a polymodel and there is no way im going to switch to an expando for the time to remove the properties, im not even…
aschmid00
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3
votes
0 answers
Multiple inheritance mixing ndb.Model with PolyModel in AppEngine
In my application we are using a base model to hold general properties, which is a simple subclass of the ndb.Model. However, for some of the functionality it is very helpful to be able to leverage polymodel functionality. Both Model and PolyModel…
petr
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1
vote
0 answers
Upgraded emacs and polymode (poly-markdown+r-mode); now can't edit .Rmd files
I have been happily using polymode in emacs for editing Rmd files for many years. Then something broke in emacs (maybe the FastX3 config?), so the admins updated emacs from 24 to 27 for me. Now emacs works nicely but not polymode and no Rmd…
Stuart
- 569
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1
vote
1 answer
google app engine polymodel - overriding instance method - fail - python
Here's a simplification of what I'm trying to accomplish:
class B inherits from A.
Class B is supposed to override the call_me method in class A.
I'm using google app engine (maybe that's why?)
from google.appengine.ext import ndb
from…
user2738183
1
vote
1 answer
Google App Engine : PolyModel + SelfReferenceProperty
Is a PolyModel-based class able to be used as a SelfReferenceProperty ?
I have the below code :
class BaseClass(polymodel.PolyModel):
attribute1 = db.IntegerProperty()
attribute2 = db.StringProperty()
class ParentClass(BaseClass):
…
rvandervort
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0
votes
2 answers
is it safe to overwrite __setitem__ on an appengine polymodel?
I'm making a spam filter library for google app engine, which uses app engine hooks to modify some data right before it is put() into the datastore. To do so, I created a model that subclasses the PolyModel class, which classes wishing to be…
bigblind
- 12,539
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0
votes
1 answer
Schematics PolyModelType How to choose correct model if field-condition is placed level up
I have the following models e.g How to choose correct model under PolyModel based on "code" value that placed level up into the structure?
Thanks in advance
class _Model1(Model):
resourceId = StringType()
resourceType = StringType()
class…
user7220195
- 21
- 1
0
votes
1 answer
Deleting a child class of polymodel in python appengine
In python appengine, I have a polymodel class (e.g. Animal). I stored in the datastore some instances of child classes (e.g. Horse).
If I delete the definition of the Horse class in the python source code (or change its name), and get the stored…
Uri
- 25,622
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0
votes
1 answer
NDB PolyModel Problems
I'm working on a google app engine app in which we use polymodel to express a subset of the entities. I'm having problems using it in the way that the docs claim it works though.
My first problem is that I noticed that a call on an 'inherited'…
bgenchel
- 3,739
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0
votes
1 answer
Turn jpeg into high poly model
I am looking for something in maybe javascript or python which can take a jpeg and turn it into a poly model based on the image?
For this I will be looking at transforming an portrait image of a person and produce a semi 3D image. (I will write a…
TonyFrost
- 1
- 1
0
votes
1 answer
polymodel looks like not work well with KeyProperty
It looks like KeyProperty's kind validation doesn't work for subclass of PolyModel.
from google.appengine.ext import ndb
from google.appengine.ext.ndb import polymodel
class Item(polymodel.PolyModel):
parent =…
lucemia
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0
votes
1 answer
Python extend method of parent class
I'm writing a Google Appengine app in Python. The app does receive and send data through google cloud endpoint messages. Below you'll find an example of the database model definition. Object contains all the objects, ObjectBoolean just the boolean…
decurgia
- 111
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0
votes
1 answer
ndb.StructuredProperty not calling ndb.PolyModel subclass methods
While storing ndb.Polymodel superclasses as an ndb.StructuredProperty, I was unable to access subclass methods; superclass methods were called instead and raising NotImplementedError's. Here is an abridged version of what I am trying to…
super
- 181
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0
votes
1 answer
How to get all class properties (in Python) of a GAE polymodel including those defined via @property
I am using the Google App Engine polymodel to model data that can have more than one instance of a property - e.g. a contact could have multiple phone numbers. Say this is my setup:
class Foo(polymodel.PolyModel):
some_prop =…
pixelphantom
- 531
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0
votes
2 answers
Google App Engine get PolyModel as child class
When I run Google App Engine likeso:
from google.appengine.ext import db
from google.appengine.ext.db import polymodel
class Father(polymodel.PolyModel):
def hello(self):
print "Father says hi"
class Son(Father):
def…
Brian M. Hunt
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