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2312 discussions

Changing edit form based on user credentials

by Michael Davies

Hi all, I've got a class inherited from PRPage with some additional properties, and I want to hide those properties from all but the page owner at edit time. The problem is that PREditCommand doesn't pass the context to the page before requesting its description, so the page instance doesn't have the necessary information to dynamically change its description. I can get the required functionality to work, by overriding PREditCommand>>description to make decisions about how to render the page, but that seems I wonder if there's a better way to approach this? In other words, is there a sensible way to make PRPage aware of the context in which its edit form is being rendered? I was contemplating adding context as an instance variable on PRPage and setting it from PREditCommand, but I suspect that if that was a sensible approach, it would have been done already! I've only just started using Pier in earnest, so if this question exposes a lack of understanding of anything fundamental, please feel free to point this out. Cheers, Michael

16 years, 5 months

about the big kernel lock

by Philippe Marschall

Hi I recently read an article how KDevelop handles threading and that got me thinking. As far as I understand Pier currently uses a global lock for all write operations (where #isView returns false). All good an fine so far. But shouldn't this be a a read-write lock? Imagine the following scenario: - a view command is executed, is starts to read some objects, iterates over some objects - the current process is unscheduled - a new process is with a write command is scheduled, it executes to completion - the original view command is scheduled a again but it has inconsistent information, eg the parent of an already read structure has changed A read-write lock should not affect performance because it allows multiple concurrent readers. Cheers Philippe

16 years, 5 months

Thanks Lukas!

by Rick Flower

I'm finally getting around to using Magritte and while I'm only on the edge of learning what its fully capable of doing, I'm finding that it appears to work as advertised (which is great!) and that should really help get rid of a bunch of clutter from my code where I had a bunch of rendering code + validation handlers. I was trying to do my own formatting but will back away from that now and focus on content instead (I've got a short turn-around time).. Once the content and functionality is working then I'll focus on doing the prettying-up of the forms,etc. Anyway, I just wanted to write a quick 'Thanks' note to let you know that your hard work is very appreciated! -- Rick

16 years, 5 months

Adding conditions for more than the current description

by Danie Roux

Dear list, This should be an easy answer, I'm just not finding it: How would I rewrite something like this into descriptions? (maxAnnualFee > 0) & (fixedAnnualFee > 0) ifTrue: [InvalidFeeSelection signal]. -- Danie Roux *shuffle* Adore Unix - http://danieroux.com

16 years, 5 months

Question regarding Magritte-Addons package..

by Richard E. Flower

Lukas et-al, Is it safe to assume that if I want to port parts of Magritte-Addons to the VW version of Magritte (which was taken from the LR251 version of Magritte in Oct 2007), that I should stick with a version that is dated in about the same period of time (up to perhaps December 2007?) to avoid issues with the interfaces changing? Just curious.. Thx! -- Rick

16 years, 5 months

whats the best way to access the object data when doing custom rendering..?

by Richard E. Flower

I'm trying to follow "Possibility 3" from the Magritte tutorial (page 54) where I subclass MAContainerComponent and create my own #renderContentOn: and override #descriptionContainer to point to my new subclass.. The tutorial didn't really indicate how to get the component data or other general usage -- so I figured I'd ask.. Also -- for future reference.. Is there an example or two that might be good to use as references for this sort of questioning that doesn't require pier since I'm on the VW platform? I'm a Magritte newbie and examples are very helpful.. Thx! -- Rick

16 years, 5 months

Re: Styling Magritte

by Keith Hodges

Richard E. Flower wrote: > Keith, > > Do you mind me asking what sort of method(s) you used to do the > styling of the form that you were > showing in this older email thread? Some of what you show is pretty > much what I'm looking to do > but I'm totally lost on how to get it going.. Many thanks in advance > for any pointers you can provide..! > > -- Rick > Basic packages which you may or may not want to use... Installer lukas project: 'magritteaddons'; install: 'Magritte-RealMemento'; install: 'Magritte-CustomBuilder'; install: 'Magritte-Scriptaculous. Magritte-RealMemento package uses a real copy of the object as a memento, rather than a dictionary of key value pairs. The real object has behaviour which may relate data items. To use the real memento you have to override #mementoClass for your model. "Magritte-CustomBuilder" sets the default builder to use a numeric in the description selector to set the priority, like so. (I find this very useful) description0250Documents ^ MAToManyRelationDescription new classes: (Array with: DTIExternalFileModel); "Magritte-Scriptaculous extends the accessors so you can do things like this... Where the visibility of this item is determined by #hasOrderNumber." accessor: (#documents asAccessor visible: #hasOrderNumber); componentClass: MAOneToManyDocumentsComponent; label: 'Documents'; yourself Accessors augmented in this manner can provide #readonly #visible #cssClasses #tooltip and #options (for lists) For rendering, lukas has his MACssRenderer, and I have my MADivsRenderer (part of Magritte-Scriptaculous). There is also Magritte-ComponentDecoration another add on that you might find useful. best regards Keith

16 years, 5 months

Showing last updated structures

by cdrick

Hi, I'd like to have a component that show last edited structure (at leat page). I think it's not possible yet. Correct me if wrong. Does adding an inst var timestamp in structure is the way to go ? Thanks Cédrick

16 years, 5 months

too many PRContext instances ?

by cdrick

I have too manyPRContext instances. PRContext allInstances size " 55408" Can I get rid of them and how ;) ? Thanks Cédrick

16 years, 5 months

MAFileDescription error

by Dario Trussardi

Hi, i work with squeak update to the last 2.9 seaside and Magritte-All-lr-269. I have a class 'MAArticoloModel ' defined with some descriptions. One description is based on MAFileDescription descriptionPicture ^ ( MAFileDescription new) autoAccessor: 'immagine'; beRequired; label: 'Immagine'; priority: 60; yourself Now when update an item with : self call: ( anMAArticoloModel asComponent) readonly: false; addValidateForm; addMessage: 'Update item; yourself all work fine. But when display an item with: self call: ( anMAArticoloModel asComponent) readonly:true; addForm: #(cancel); addMessage: 'Display item'; yourself i found the error: MessageNotUnderstood: WAMimeType >> copyUpTo. Any pointers would be greatly appreciated! Thanks! Dario

16 years, 5 months

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