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How to catch the moment of PRCase added to model?

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Dennis Schetinin

How to catch the moment of PRCase added to model?

guess I can do it using memento (by adding MACheckedMemento child with overloaded #commit and accordingly overloading #mementoClass in my class). But maybe there is a simpler way?

... Thank you :)

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Dennis Schetinin

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Lukas Renggli

Re: How to catch the moment of PRCase added to model?

> guess I can do it using memento (by adding MACheckedMemento child with
> overloaded #commit and accordingly overloading #mementoClass in my class).
> But maybe there is a simpler way?

What do you mean by "added to model"?

Added as a child?

Lukas

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Dennis Schetinin

Re: How to catch the moment of PRCase added to model?

> guess I can do it using memento (by adding MACheckedMemento child with
> overloaded #commit and accordingly overloading #mementoClass in my class).
> But maybe there is a simpler way?

What do you mean by "added to model"?

Added as a child?

Lukas

Yes, it was incorrect question. I mean the moment right after object's got it's aspects values after user filled the form and pressed 'Saved'...

I mostly interested this moment right after new object was added. But it's quite obvious to implement.

I'm affraid it's still not clear... So, the whole task is to notify admin of the site (by email) when a new question (as an instance of PRCase) was added (for example).

... Still sorry for my English

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Lukas Renggli

Re: How to catch the moment of PRCase added to model?

> Yes, it was incorrect question. I mean the moment right after object's got
> it's aspects values after user filled the form and pressed 'Saved'...
> I mostly interested this moment right after new object was added. But it's
> quite obvious to implement.

You can override #write:using: in any model object to intercept the
writing of values.

At the moment there is no message though that is sent to the object
when all values are written. I guess, as you suggested, a new memento
could do this.

> I'm affraid it's still not clear... So, the whole task is to notify admin of
> the site (by email) when a new question (as an instance of PRCase) was
> added (for example).

This sounds more like a logging facility. PRImagePersistency already
writes a log of all changes on the site. Maybe this is of any help for
you?

Lukas

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Lukas Renggli
http://www.lukas-renggli.ch

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John McKeon

Re: How to catch the moment of PRCase added to model?

My first thought would be to use an override to doValidate or doExecute in PRAddCommand.
John

On Mon, Mar 30, 2009 at 3:03 AM, Lukas Renggli <[hidden email]> wrote:

> Yes, it was incorrect question. I mean the moment right after object's got
> it's aspects values after user filled the form and pressed 'Saved'...
> I mostly interested this moment right after new object was added. But it's
> quite obvious to implement.

You can override #write:using: in any model object to intercept the
writing of values.

At the moment there is no message though that is sent to the object
when all values are written. I guess, as you suggested, a new memento
could do this.

> I'm affraid it's still not clear... So, the whole task is to notify admin of
> the site (by email) when a new question (as an instance of PRCase) was
> added (for example).

This sounds more like a logging facility. PRImagePersistency already
writes a log of all changes on the site. Maybe this is of any help for
you?

Lukas

--
Lukas Renggli
http://www.lukas-renggli.ch

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keith1y

Re: How to catch the moment of PRCase added to model?

John McKeon wrote:
> My first thought would be to use an override to doValidate or
> doExecute in PRAddCommand.
> John
>
Pier could use a way to enable commands to be subclassable and
overridable. At present if you subclass PULogin for example, you get two
Login links showing up.

Keith

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keith1y

Re: How to catch the moment of PRCase added to model?

In reply to this post by Lukas Renggli

Lukas Renggli wrote:

>> Yes, it was incorrect question. I mean the moment right after object's got
>> it's aspects values after user filled the form and pressed 'Saved'...
>> I mostly interested this moment right after new object was added. But it's
>> quite obvious to implement.
>>
>
> You can override #write:using: in any model object to intercept the
> writing of values.
>
>

If you load

Magritte-RealMemento (a dependent of Magritte-Scriptaculous) it implements:

Object:#commit: - dummy implementation

and overrides

MACheckedMemento-#commit to send #commit: to the model.

It also has its own memento implementation which uses for the memento, a
copy of the original object (including behaviour) rather than a
dictionary of key-values.

I combine this with the client-framework, for pluggable front and back
ends. So commit: calls

self client autoCommitSomeObjectClass: self

and

#autoCommitSomeObjectClass: anObject

calls

db autoCommitSomeOnectClass: anObject

This gives you enough hooks to provide customisable behaviour
per-client-installation and per-database-backend, including mock
behaviour for testing.

Keith

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Dennis Schetinin

Re: How to catch the moment of PRCase added to model?

Thanks all. Now I have enough information to make the decision.

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