Re: [Zope] Product inhetitance question
Well by inheritance B has all the methods, properties etc you have in A. So the answer is yes, if A has the foobar method then B will have a foobar method. Or do I misunderstand your question? -- Andy McKay, Developer, ActiveState http://www.ActiveState.com Programming for the People - Original Message - From: "Daniel Rusch" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, August 17, 2000 8:42 AM Subject: [Zope] Product inhetitance question > Hey all, > > Say I have a fully functional (and more importantly, working) Product > will call A. > > I want to extend this Product's capabilities so I wish to derive another > class from it, call it B. > > No problem, > > class B(A): > . > > > The question is, (I think the answer is no) is there a way to inherit > (i.e. reuse common code and extend it) the manage_Add function and the > dtml files from A??? > > Thanks, > > DR > > > > ___ > Zope maillist - [EMAIL PROTECTED] > http://lists.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope-dev ) > ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Product inhetitance question
- Original Message - From: "Andy McKay" <[EMAIL PROTECTED]> To: "Daniel Rusch" <[EMAIL PROTECTED]> Sent: Thursday, August 17, 2000 11:21 AM Subject: Re: [Zope] Product inhetitance question > Ah... ok sorry you are right, stuff outside the class doesnt get inherited. > What I did for this was make a very generic manage_addProduct and specify in > my _init_.py a class initialisation string or whatever it is called... > > context.registerClass(A.ObjB, permission='Add ObjB', > constructors=(A.addForm, A.manage_addA) ) > > If that makes sense. The manage_AddObject form creates an the right object > depending upon paramaters passed to it. > > -- > Andy McKay, Developer, ActiveState > http://www.ActiveState.com > Programming for the People > > > - Original Message - > From: "Daniel Rusch" <[EMAIL PROTECTED]> > To: "Andy McKay" <[EMAIL PROTECTED]> > Sent: Thursday, August 17, 2000 9:10 AM > Subject: Re: [Zope] Product inhetitance question > > > > Slightly, > > > > I understand that if A has foo() then so does B(). But in a Zope product > the > > are some things that lie "outside" of the class definition. The manage_add > > function is one of them. addtionally, I am having troubles getting B to > > inherit A's _properties structure. > > > > Thanks for all your help. I have learned an unbelieveable amount this > week. > > Everyone else is gone and we are in a slow period so I wanted to learn the > > more advanced techniques this week. > > > > Dan > > > > Andy McKay wrote: > > > > > Well by inheritance B has all the methods, properties etc you have in A. > So > > > the answer is yes, if A has the foobar method then B will have a foobar > > > method. > > > > > > Or do I misunderstand your question? > > > -- > > > Andy McKay, Developer, ActiveState > > > http://www.ActiveState.com > > > Programming for the People > > > > > > - Original Message - > > > From: "Daniel Rusch" <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]> > > > Sent: Thursday, August 17, 2000 8:42 AM > > > Subject: [Zope] Product inhetitance question > > > > > > > Hey all, > > > > > > > > Say I have a fully functional (and more importantly, working) Product > > > > will call A. > > > > > > > > I want to extend this Product's capabilities so I wish to derive > another > > > > class from it, call it B. > > > > > > > > No problem, > > > > > > > > class B(A): > > > > . > > > > > > > > > > > > The question is, (I think the answer is no) is there a way to inherit > > > > (i.e. reuse common code and extend it) the manage_Add function and the > > > > dtml files from A??? > > > > > > > > Thanks, > > > > > > > > DR > > > > > > > > > > > > > > > > ___ > > > > Zope maillist - [EMAIL PROTECTED] > > > > http://lists.zope.org/mailman/listinfo/zope > > > > ** No cross posts or HTML encoding! ** > > > > (Related lists - > > > > http://lists.zope.org/mailman/listinfo/zope-announce > > > > http://lists.zope.org/mailman/listinfo/zope-dev ) > > > > > > > ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Product inhetitance question
This worked for me, what a hack
_ properties=[]
for i in range(0,len(A._properties)):
_properties.append(A._properties[i])
_properties.append({'id':'RenderStandardHeader', 'type':'int','mode':'w'})
tuple(_properties)
Andy McKay wrote:
> Hmm i just tested it in Zope and it worked fine for me.
> --
> Andy McKay, Developer, ActiveState
> http://www.ActiveState.com
> Programming for the People
>
> - Original Message -
> From: "Daniel Rusch" <[EMAIL PROTECTED]>
> To: "Andy McKay" <[EMAIL PROTECTED]>
> Sent: Thursday, August 17, 2000 11:36 AM
> Subject: Re: [Zope] Product inhetitance question
>
> > Great minds think a like or fools never differ.
> >
> > I tried this to but I get an error:
> > TypeError: bad operand type(s) for +
> >
> > Dan
> >
> > Andy McKay wrote:
> >
> > > I just had the exact same problem and I solved this morning by:
> > >
> > > class A:
> > > _properties = ( {...} )
> > >
> > > class B(A):
> > > _properties = ( { new stuff... } )
> > > _properties = _properties + A._properties
> > >
> > > This is tested in a quick script, but not fully in the products yet. So
> this
> > > will make class B have a properties dict that includes all of A, so you
> > > shouldnt need to edit manage_edit... in theory!
> > >
> > > --
> > > Andy McKay, Developer, ActiveState
> > > http://www.ActiveState.com
> > > Programming for the People
> > >
> > > - Original Message -
> > > From: "Daniel Rusch" <[EMAIL PROTECTED]>
> > > To: "Andy McKay" <[EMAIL PROTECTED]>
> > > Sent: Thursday, August 17, 2000 9:40 AM
> > > Subject: Re: [Zope] Product inhetitance question
> > >
> > > > Sorry to keep bothering you, but I'm on the threshold of success
> > > >
> > > > my B class has an extra property, therefore B's manage_edit needs to
> > > address
> > > > this. In C++ I could override the base class's manage_edit do the B
> stuff
> > > and
> > > > then call the base class's manage_edit, can this be done in python???
> > > >
> > > > Dan
> > > >
> > > > Andy McKay wrote:
> > > >
> > > > > Well by inheritance B has all the methods, properties etc you have
> in A.
> > > So
> > > > > the answer is yes, if A has the foobar method then B will have a
> foobar
> > > > > method.
> > > > >
> > > > > Or do I misunderstand your question?
> > > > > --
> > > > > Andy McKay, Developer, ActiveState
> > > > > http://www.ActiveState.com
> > > > > Programming for the People
> > > > >
> > > > > - Original Message -
> > > > > From: "Daniel Rusch" <[EMAIL PROTECTED]>
> > > > > To: <[EMAIL PROTECTED]>
> > > > > Sent: Thursday, August 17, 2000 8:42 AM
> > > > > Subject: [Zope] Product inhetitance question
> > > > >
> > > > > > Hey all,
> > > > > >
> > > > > > Say I have a fully functional (and more importantly, working)
> Product
> > > > > > will call A.
> > > > > >
> > > > > > I want to extend this Product's capabilities so I wish to derive
> > > another
> > > > > > class from it, call it B.
> > > > > >
> > > > > > No problem,
> > > > > >
> > > > > > class B(A):
> > > > > > .
> > > > > >
> > > > > >
> > > > > > The question is, (I think the answer is no) is there a way to
> inherit
> > > > > > (i.e. reuse common code and extend it) the manage_Add function and
> the
> > > > > > dtml files from A???
> > > > > >
> > > > > > Thanks,
> > > > > >
> > > > > > DR
> > > > > >
> > > > > >
> > > > > >
> > > > > > ___
> > > > > > Zope maillist - [EMAIL PROTECTED]
> > > > > > http://lists.zope.org/mailman/listinfo/zope
> > > > > > ** No cross posts or HTML encoding! **
> > > > > > (Related lists -
> > > > > > http://lists.zope.org/mailman/listinfo/zope-announce
> > > > > > http://lists.zope.org/mailman/listinfo/zope-dev )
> > > > > >
> > > > >
> > > > > ___
> > > > > Zope maillist - [EMAIL PROTECTED]
> > > > > http://lists.zope.org/mailman/listinfo/zope
> > > > > ** No cross posts or HTML encoding! **
> > > > > (Related lists -
> > > > > http://lists.zope.org/mailman/listinfo/zope-announce
> > > > > http://lists.zope.org/mailman/listinfo/zope-dev )
> > > >
> >
___
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RE: [Zope] Product inhetitance question (similar question)
Title: RE: [Zope] Product inhetitance question (similar question) And what happen if the Class A is in a package PA. Clabb B is in a package PB. How do you access the namespace of PA from PB ? When I have tried, the inherited methods from A where not visible from B, and I and to recreate a copie of the method. (which is ugly !!!). Any suggestion ? Thierry Nabeth Research Fellow INSEAD CALT (the Centre for Advanced Learning Technologies) http://www.insead.fr/CALT/ -- From: "Andy McKay" <[EMAIL PROTECTED]> To: "Daniel Rusch" <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]> Subject: Re: [Zope] Product inhetitance question Date: Thu, 17 Aug 2000 08:54:49 -0700 charset="iso-8859-1" > Say I have a fully functional (and more importantly, working) Product > will call A. > > I want to extend this Product's capabilities so I wish to derive another > class from it, call it B. > > No problem, > > class B(A): > . > > > The question is, (I think the answer is no) is there a way to inherit > (i.e. reuse common code and extend it) the manage_Add function and the > dtml files from A??? Well by inheritance B has all the methods, properties etc you have in A. So the answer is yes, if A has the foobar method then B will have a foobar method. Or do I misunderstand your question? -- Andy McKay, Developer, ActiveState http://www.ActiveState.com Programming for the People --
RE: [Zope] Product inhetitance question (similar question)
NABETH Thierry writes: > And what happen if the Class A is in a package PA. > Clabb B is in a package PB. > > How do you access the namespace of PA from PB ? from PA import A, . class B(A): > When I have tried, the inherited methods from A where not visible > from B, and I and to recreate a copie of the method. > (which is ugly !!!). Almost unbelievable. Dieter ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
