[Zope] Problems with zclass and instances!!
Edgardo Zulian
ezulian@elsitio.com.ar
Thu, 2 Aug 2001 11:18:32 -0300
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Hi there:
I have created a product 'X' with a zclass call 'X1'. This X1 zclass in =
the propertysheet has a Common Instance Property Sheet called 'section' =
(/Control_Panel/Products/X/X1/propertysheets/common/section), with some
properties with default values:
ie. one of it's property is call ed 'section1' with the default value =
'left side', the type of this property is 'string':
section1 'left side' string
Then in the views of the zclass I 've added a method =
"propertysheets/section/manage",=20
so when I create an instance I can enter to this propertysheet.
So the problem is here:
When I create an instance of this 'X1' zclass an I enter to this =
propertysheet/section , I can change the default value of 'section1' =
which was 'left side' to 'center side' for example.
But then if i change the original default value of my zclass 'X1' to =
'right side' let say. The change will not be reflected in my instance, =
which is okey because i have change d the value to 'center side' =
before.
Another case is when I create another instance of 'X1' zclass =
without making any change to the value of 'section1' and click on save =
changes, then if I change the default value in the zclass, the change =
will not be reflected in this instance.
So the question is:
There is a way to recognize when an instance will not take the changes =
that are make to the default values of a propertysheets (in this case =
thepropertysheet 'section' ) of a zclass from which they inheritance?
I try with this lines in an external method, but nothing:
self=3Dself._getOb('instanceTest') # instanceTest is the name =
of the instance of the 'X1 Zclass'
a=3Dgetattr(self,'meta_type')
b=3Dgetattr(self.__class__,'meta_type')
# in this example the answer was the same: X1
a=3Deval('self.__class__.propertysheets.section._propertyMap()')
b=3Deval('self.propertysheets.section._propertyMap()')
# the answer was again the same: {'id': 'section1', 'type': =
'string','meta': {}, 'mode': 'w'}
#I try acceding to the zclass to know if it was different from =
theinstance...
=
a=3Deval('self.Control_Panel.Products.X.propertysheets.common.section.pro=
pertyMap()')
# the answer not help: {'id': 'section1', 'type': 'string', 'meta': =
{}},
I cannot found any property or something that help me...
I don't know where to look or what to try next....if anybody can help me =
with this.......
Thanks in advance
Edgardo
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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2><FONT face=3D"Times New Roman" =
size=3D3>Hi=20
there:<BR><BR>I have created a product 'X' with a zclass call 'X1'. This =
X1=20
zclass in the propertysheet has a Common Instance Property Sheet =
called =20
'section' =
(/Control_Panel/Products/X/X1/propertysheets/common/section),=20
with some<BR>properties with default values:<BR>ie. one of it's property =
is call=20
ed 'section1' with the default value 'left side', the type =
of =20
this property is 'string':<BR>section1 'left =
side' =20
string<BR><BR>Then in the views of the zclass I 've =20
added a method "propertysheets/section/manage", =
</FONT></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><FONT face=3D"Times New Roman" =
size=3D3>so when I=20
create an instance I can enter to this=20
propertysheet.<BR></FONT></FONT></DIV><FONT face=3DArial size=3D2><FONT=20
face=3D"Times New Roman" size=3D3>
<DIV><FONT face=3DArial size=3D2></FONT><BR>So the problem is=20
here:<BR><BR> When I create an instance of this 'X1' zclass =
an I=20
enter to this propertysheet/section , I can change the =
default value=20
of 'section1' which was 'left side' to 'center side' for =
example.<BR><BR>But=20
then if i change the original default value of my zclass 'X1' to 'right =
side'=20
let say. The change will not be reflected in my instance, =
which is=20
okey because i have change d the value to 'center side'=20
before.<BR><BR>Another case is when I create another =
instance of=20
'X1' zclass without making any change to the value of=20
'section1' and click on save changes, then if I change the default =
value=20
in the zclass, the change will not be reflected in this =
instance.<BR><BR>So the=20
question is:<BR><BR>There is a way to recognize when an =
instance will not=20
take the changes that are make to the default values of a =
propertysheets=20
(in this case thepropertysheet 'section' ) of a zclass from which =
they=20
inheritance?<BR><BR> I try with this lines in an external method, =
but=20
nothing:<BR><BR> =20
self=3Dself._getOb('instanceTest') &nb=
sp; =20
# instanceTest is the name of the instance of the 'X1=20
Zclass'<BR> a=3Dgetattr(self,'meta_type')<BR> =20
b=3Dgetattr(self.__class__,'meta_type')<BR> # in this =
example the=20
answer was the same: X1<BR><BR> =20
a=3Deval('self.__class__.propertysheets.section._propertyMap()')<BR> =
; =20
b=3Deval('self.propertysheets.section._propertyMap()')<BR> # =
the=20
answer was again the same: {'id': 'section1', 'type': 'string','meta': =
{},=20
'mode': 'w'}<BR><BR> #I try acceding to the zclass to know =
if it was=20
different from theinstance...<BR> =20
a=3Deval('self.Control_Panel.Products.X.propertysheets.common.section.pro=
pertyMap()')<BR> =20
# the answer not help: {'id': 'section1', 'type': 'string', 'meta': =
{}},</DIV>
<DIV><FONT face=3DArial size=3D2></FONT><BR>I cannot found any property =
or something=20
that help me...</DIV>
<DIV><FONT face=3DArial size=3D2></FONT><BR>I don't know where to look =
or what to=20
try next....if anybody can help me with this.......<BR><BR>Thanks in=20
advance<BR>Edgardo</FONT><BR><BR><BR></DIV></FONT></BODY></HTML>
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