spot7.org logo
Home PHP C# C++ Android Java Javascript Python IOS SQL HTML Categories

Inheritance: Extending Model Classes in a sub-file


To add on additional methods to a model class, you need to set proxy=True:

from apps.main.models import Catalog

 class CatalogMasterTitleCreation(Catalog):
     class Meta:
        proxy = True
    def print_hello(self):
        print 'hello!!'

https://docs.djangoproject.com/en/dev/topics/db/models/#proxy-models


Categories : Python

Related to : Inheritance: Extending Model Classes in a sub-file
Multiple inheritance with Qt classes
You can use QGraphicsObject instead of QGraphicsItem, which provides the required signals / slots mechanism for you, without the need for multiple inheritance. You also mention in your comment:- [inheriting] Line from QgraphicsLineItem and Text from QgraphicsTextItem Rather than extending QGraphicsLineItem and QGraphicsTextItem, it would be better if you inherit from QGraphicsItem or QGrap

Categories : C++
Extending Magento Model Not Working
Your config.xml is not set properly. Magento is case sensitive in reading the xml files. So your config.xml file should be like this, <?xml version="1.0"?> <config> <modules> <KNG_M2eProMods> <version>0.1.0</version> </KNG_M2eProMods> </modules> <global> <models> <m2epromods> <class>KNG_

Categories : PHP
how does inheritance work with abstract classes in java
Just change private to protected. private means that your subclasses don't have access to variables or methods, whereas protected allows this access.

Categories : Java
Child classes not saved in database in ASP.Net MVC Identity Model
I suspect UserManager.Create() is expecting an ApplicationUser object rather than a Person and, as such, just treats it as a ApplicationUser. You should just add your application-specific properties to the ApplicationUser class rather than inheriting from it. A tutorial describing the process is here In a nutshell you simply need to add properties inside this class definition in the /Models/iden

Categories : C#
Where do constructors go for classes that extend or implement other classes
There's no change to the constructor required. What is required is that you implement the methods prescribed by the interface. That is to say, you could have the same constructor you're using (provided that you provide types for your parameters, which you are not, but you must), but you are required to implement compareTo(Student other) somewhere in your class.

Categories : Java
Recently Add
Adding json to new Django database
document clustering in python
Only read the last character in a .txt file
Is it possible to redirect to different domain retaining the trailing endpoint, from a route?
Python NameError: not defined
Numpy array loop
Turning off Tick Marks in Bokeh
Python: Number and operator concatenation not working (Euler's Method)
Python: Twitter API tweets/search: Flatten nested dictionary to columns
Python 2.7 cmd autocomplete readline buffers seem stale
Memory usage/efficiency for pandas dataframe versus lists versus tuples, etc.
How can i use multiple lists as arguments in a function and receive them differently?
PyQt - setText method of QTableWidget gets AttributeError
Matplotlib - get value of autoscale
Backwards axes in numpy.delete
Twilio - How to determine the length of a conference call?
Counting string using for loop
Automating creation of class instances in python for an undetermined amount of instances
Printing 2D-array in a grid
Load PreComputed Vectors Gensim
IPython _repr_html_
Reversing a number using recursion
Is there a configuration under which a numpy operation will work on more than a single core/thread?
Is there a better way to write this if-statement?
Python: Effective reading from a file using csv module
Django/Python: CSV for-in loop overriding first row each time through
How to read the pickled igraph graph object from old version by new version igraph
Tornado WebSocket with Django ORM with shared session
trying to plot contours of bivariate normal, won't work with a correlation term
Python split users input
© Copyright 2017 spot7.org Publishing Limited. All rights reserved.