19 Apr
2007
19 Apr
'07
10:27 p.m.
I am creating a model class that only has a few core attributes and
will allow the user to create descriptions through a description
editor. Is subclassing MAAdaptiveModel a smart alternative to using
customDescription on the class side (as seen in Exercise 18 in
magritte-solutions.pdf)?
Thanks,
Chad
19 Apr
19 Apr
10:34 p.m.
I am creating a model class that only has a few core
attributes and
will allow the user to create descriptions through a description
editor. Is subclassing MAAdaptiveModel a smart alternative to using
customDescription on the class side (as seen in Exercise 18 in
magritte-solutions.pdf)?
Yes, I think that's a good solution.
Sometimes this is not possible, so a stateful trait -- to turn any
class into an adaptive model -- would be a really a cool thing to
have. I basically end up re-implementing the few methods necessary
over and over again.
Cheers,
Lukas
--
Lukas Renggli
http://www.lukas-renggli.ch
10:56 p.m.
Subclassing MAAdaptiveModel works with the MADescriptionEditor.
However, when I try to get an edit for for my model with "mymodel
asComponent", none of the descriptions appear in the form, not even
the ones that are hard-coded into the class-side. BTW, I have cleared
caches and initialized my model class.
Chad
On 4/19/07, Lukas Renggli <renggli(a)iam.unibe.ch> wrote:
--
Chad Nantais
http://myspace.com/chadnantais
http://www.last.fm/music/Chad+Nantais
I am creating
a model class that only has a few core attributes and
will allow the user to create descriptions through a description
editor. Is subclassing MAAdaptiveModel a smart alternative to using
customDescription on the class side (as seen in Exercise 18 in
magritte-solutions.pdf)?
Yes, I think that's a good solution.
Sometimes this is not possible, so a stateful trait -- to turn any
class into an adaptive model -- would be a really a cool thing to
have. I basically end up re-implementing the few methods necessary
over and over again.
Cheers,
Lukas
--
Lukas Renggli
http://www.lukas-renggli.ch
_______________________________________________
SmallWiki, Magritte, Pier and Related Tools ...
https://www.iam.unibe.ch/mailman/listinfo/smallwiki
21 Apr
21 Apr
3:41 p.m.
On 19 Apr 2007, at 22:56, Chad Nantais wrote:
Subclassing MAAdaptiveModel works with the
MADescriptionEditor.
However, when I try to get an edit for for my model with "mymodel
asComponent", none of the descriptions appear in the form, not even
the ones that are hard-coded into the class-side. BTW, I have cleared
caches and initialized my model class.
MAAdaptiveModel doesn't take the hard-coded class side descriptions
into account as it overrides #description without calling super. You
can change that of course, but doing something like I did in the
class PRForm in the package Pier-Forms.
description
"Answer a generic description with the properties of the structure."
^ (MAContainer withAll: super description) , self metamodel
readUsing: aDescription
^ (self metamodel includes: aDescription)
ifFalse: [ super readUsing: aDescription ]
ifTrue: [ self model at: aDescription ifAbsent: [ aDescription
default ] ]
write: anObject using: aDescription
(self metamodel includes: aDescription)
ifFalse: [ super write: anObject using: aDescription ]
ifTrue: [ self model at: aDescription put: anObject ]
In this example I store the adaptive descriptions in the variable
metamodel. You need change your description editor to reflect that.
HTH,
Lukas
--
Lukas Renggli
http://www.lukas-renggli.ch
22 Apr
22 Apr
8:07 p.m.
Yes, your response was helpful, as always.
One thing I don't quite get though is whether it is
safe/smart/possible to use a description editor on the hard-coded
descriptions (eg. change priority; add more options to an
MASingleOptionDescription).
Chad
On 4/21/07, Lukas Renggli <renggli(a)iam.unibe.ch> wrote:
On 19 Apr 2007, at 22:56, Chad Nantais wrote:
--
Chad Nantais
http://myspace.com/chadnantais
http://www.last.fm/music/Chad+Nantais
Subclassing MAAdaptiveModel works with the
MADescriptionEditor.
However, when I try to get an edit for for my model with "mymodel
asComponent", none of the descriptions appear in the form, not even
the ones that are hard-coded into the class-side. BTW, I have cleared
caches and initialized my model class.
MAAdaptiveModel doesn't take the hard-coded class side descriptions
into account as it overrides #description without calling super. You
can change that of course, but doing something like I did in the
class PRForm in the package Pier-Forms.
description
"Answer a generic description with the properties of the structure."
^ (MAContainer withAll: super description) , self metamodel
readUsing: aDescription
^ (self metamodel includes: aDescription)
ifFalse: [ super readUsing: aDescription ]
ifTrue: [ self model at: aDescription ifAbsent: [ aDescription
default ] ]
write: anObject using: aDescription
(self metamodel includes: aDescription)
ifFalse: [ super write: anObject using: aDescription ]
ifTrue: [ self model at: aDescription put: anObject ]
In this example I store the adaptive descriptions in the variable
metamodel. You need change your description editor to reflect that.
HTH,
Lukas
--
Lukas Renggli
http://www.lukas-renggli.ch
_______________________________________________
SmallWiki, Magritte, Pier and Related Tools ...
https://www.iam.unibe.ch/mailman/listinfo/smallwiki
9:23 p.m.
One thing I don't quite get though is whether it
is
safe/smart/possible to use a description editor on the hard-coded
descriptions (eg. change priority; add more options to an
MASingleOptionDescription).
No, this is not save, unless you copy them before editing. If you
flush the description cache (and this happens automatically if you
edit your code), they will be flushed.
Btw, I did not forget your mail "Magritte: Error when adding Multiple-
Option, Single-Option through editor" however I couldn't fix the
problem yet. Stay tuned.
Cheers,
Lukas
--
Lukas Renggli
http://www.lukas-renggli.ch
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