Re: [Zope] How to make two racks work under one specialist?
Hi Dirksen, I think the problem you are having has to do with using 'getItem'. From the SkinScriptSyntax Wiki page: "If the RESULT is NOT_FOUND, the search for the attribute value falls through to the next declaration (or attribute provider if the SkinScript is finished). If there is an OTHERWISE LET clause, the assignments given there are computed and cached for the remainder of the (sub)transaction..." This is meant to work automatically for "WITH QUERY ... COMPUTE" scripts, but in your case the RESULT was _.None, so the test for NOT_FOUND didn't work. I think you could in principle set up a chain of attribute providers: WITH Deliverables.getItem(self.id) COMPUTE theStandInObject=RESULT or NOT_FOUND then WITH self.theStandInObject COMPUTE name OTHERWISE_LET name='not availble' so that if RESULT is _.None from Deliverables.getItem, then the 'StandIn' will be NOT_FOUND and the COMPUTE will fall through to the 'OTHERWISE LET' clause. However I don't think this works well when the existance of the virtual object in the Rack depends on 'theStandInObject' being found if theStandInObject is NOT_FOUND then the Rack returns _.None and you're out of luck. Here's a thought... what if you put a 'dummy' object somewhere accessable and did this: WITH Deliverables.getItem(self.id) COMPUTE theStandInObject=RESULT or theDummyObject then you could set all the attributes of theDummyObject to be whatever you wanted and you would never get a RESULT of NOT_FOUND. -steve "Dirksen" == Dirksen [EMAIL PROTECTED] writes: Dirksen Hi Steve, Dirksen It works! Thank you. Dirksen Still there's a couple of things to be cleared. What's Dirksen the use of 'otherwise' clause? And is it true that the Dirksen 1st 'with' clause fails, the whole skinscript process Dirksen fails (so one 'with' clause is all one skinscript can put Dirksen up with)? Dirksen Dirksen Dirksen __ Do You Dirksen Yahoo!? Yahoo! Photos - Share your holiday photos Dirksen online! http://photos.yahoo.com/ ___ 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] How to make two racks work under one specialist?
Hi Dirksen.. try this: WITH Deliverables.getItem(self.id) COMPUTE name=((RESULT is _.None) and 'none available') or RESULT.name What are you using as the 'load by accessing attribute' attribute? -steve ___ 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] How to make two racks work under one specialist?
Hi Steve, It works! Thank you. Still there's a couple of things to be cleared. What's the use of 'otherwise' clause? And is it true that the 1st 'with' clause fails, the whole skinscript process fails (so one 'with' clause is all one skinscript can put up with)? Dirksen __ Do You Yahoo!? Yahoo! Photos - Share your holiday photos online! http://photos.yahoo.com/ ___ 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] How to make two racks work under one specialist?
Hi Dirksen, OK.. the problem was that DataSkinAddons:DummyDataSkin doesn't allow access to attributes of 'self'. Once I switched to a differnt ZClass (which is a direct subclass of DataSkin) then everything was fine again.. ) just for Facade instances: I'm now using WITH Deliverables.getItem(self.id) COMPUTE originalObject=RESULT or NOT_FOUND with 'loaded by accessing attribute' set to 'originalObject' and WITH self.originalObject COMPUTE myName=name, myDescription=description, dueDate then in the FacadeClass index_html: dtml-var standard_html_header I am a facade! dtml-var myName hr Description:dtml-var myDescriptionbr hr I'm due: dtml-var dueDate dtml-var standard_html_footer and all is working OK. What ZClass are you using for your instances? -steve "Steve" == Steve Spicklemire [EMAIL PROTECTED] writes: Steve Hi Dirksen, Steve Hmm.. this is starting to look like a bug. I tried the same Steve thing with the ZPatterns example. I have a real site using Steve this technique with ZPatterns-0.4.2a?? and it's working, Steve so it's probably something introduced in 0.4.3. Here's what Steve I did: Steve I created a new Specialist 'Facade' with a Steve DataSkinAddons:DummyDataSkin as it's storage class and Steve 'originalObject' as the attribute to check for existence. Steve Then I put in the following SkinScript: Steve WITH Deliverables.getItem(self.id) COMPUTE Steve originalObject=(RESULT is _.None) and NOT_FOUND or RESULT Steve WITH self.originalObject COMPUTE name Steve and ran in 'debug mode.' I get the following traceback on Steve the console when I try to access a known deliverable Steve through the Facade Specialist: Steve Traceback (innermost last): File Steve /usr/local/etc/Zope2a/lib/python/Products/ZPatterns/AttributeProviders.py, Steve line 304, in _AttributeFor (Object: GAPMixin) File Steve /usr/local/etc/Zope2a/lib/python/Products/ZPatterns/Expressions.py, Steve line 122, in eval File Steve /usr/local/etc/Zope2a/lib/python/DocumentTemplate/DT_Util.py, Steve line 337, in eval (Object: Deliverables . getItem ( self Steve . id )) (Info: Deliverables) File string, line 0, in ? Steve File Steve /usr/local/etc/Zope2a/lib/python/DocumentTemplate/DT_Util.py, Steve line 140, in careful_getattr File Steve /usr/local/etc/Zope2a/lib/python/Products/ZPatterns/Expressions.py, Steve line 53, in validate File Steve /usr/local/etc/Zope2a/lib/python/AccessControl/SecurityManager.py, Steve line 139, in validate File Steve /usr/local/etc/Zope2a/lib/python/AccessControl/ZopeSecurityPolicy.py, Steve line 159, in validate Unauthorized: id Steve I tried stepping through with the debugger... but got lost Steve in the details of the GAP evaluator. I'll try again after Steve breakfast and see what I can come up with. Steve ;-) Steve Look on the bright side. You're making ZPatterns a better Steve product. Steve -steve "Dirksen" == Dirksen [EMAIL PROTECTED] writes: Dirksen Hi Steve, Dirksen I've made my experiment simple, by playing with the Dirksen DumbZPatterns examples, testing one rack under one Dirksen specialist. Here is the skinscript: Dirksen WITH Deliverables.getItem(self.id) COMPUTE name=name, Dirksen dueDate=dueDate, description=description, todoIDs=todoIDs Dirksen WITH SELF COMPUTE name=name, dueDate='1973/01/01', Dirksen description='unknown achee', todoIDs=[] Dirksen The virtual instance is loaded by accessing attribute of Dirksen 'name'. I thought any calls for inexistent objects in Dirksen Deliverables would turn out default values. Yet the test Dirksen result turned out an not_found error. The following Dirksen modification (change to 'otherwise' clause) didn't make a Dirksen difference: Dirksen WITH Deliverables.getItem(self.id) COMPUTE name=name, Dirksen dueDate=dueDate, description=description, todoIDs=todoIDs Dirksen OTHERWISE LET name='unknown', dueDate='1973/01/01', Dirksen description='unknown achee', todoIDs=[] Dirksen One more question, i.e. the following expression WITH Dirksen Deliverables.getItem(self.id) COMPUTE name, dueDate, Dirksen description, todoIDs Dirksen also trigered the 'not_known' error for every objects in Dirksen Deliverables. Where goes wrong? Dirksen Dirksen Dirksen __ Do You Dirksen Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions Dirksen of Products. http://shopping.yahoo.com/ Dirksen ___ Zope Dirksen maillist - [EMAIL PROTECTED] Dirksen http://lists.zope.org/mailman/listinfo/zope ** No cross Dirksen posts or HTML encoding! ** (Related lists - Dirksen http://lists.zope.org/mailman/listinfo/zope-announce Dirksen
Re: [Zope] How to make two racks work under one specialist?
Hi Dirksen,
For your 'otherwise' case, could you have a single instance
that serves as an 'unknown' object:
WITH Deliverables.getItem(self.id) COMPUTE
originalObject=RESULT or NOT_FOUND
OTHERWISE originalObject=Deliverables.getItem('Unknown')
where it is known that the Deliverables Specialist has an
instance with id='Unknown'. The problem with OTHERWISE is
that it only works within the context of a single WITH/COMPUTE,
and if you don't get 'originalObject' then your WITH/COMPUTE
will never fire.
-steve
"Dirksen" == Dirksen [EMAIL PROTECTED] writes:
Dirksen Hi Steve,
Dirksen The first thing is, my ZPatterns' version was
Dirksen 0.4.3.b1. So I quickly downloaded b2, which passed my
Dirksen nameorassignlist, but still didn't fixed the fail-through
Dirksen problem.
Dirksen The 2nd thing is, your script turned out just fine in my
Dirksen case when calling existent deliverable objects. It just
Dirksen didn't fail-through, not even the 'otherwise' clause is
Dirksen applied. This is weird!
Dirksen cheers Dirksen
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Re: [Zope] How to make two racks work under one specialist?
Hi Dirksen, Did you say you were using 0.4.3b1 or b2? I think that this sounds like the bug from b1: http://lists.zope.org/pipermail/zope-dev/2000-October/007650.html -steve "Dirksen" == Dirksen [EMAIL PROTECTED] writes: Dirksen One more question, i.e. the following expression WITH Dirksen Deliverables.getItem(self.id) COMPUTE name, dueDate, Dirksen description, todoIDs Dirksen also trigered the 'not_known' error for every objects in Dirksen Deliverables. Where goes wrong? Dirksen Dirksen ___ 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] How to make two racks work under one specialist?
Hi Steve, I've made my experiment simple, by playing with the DumbZPatterns examples, testing one rack under one specialist. Here is the skinscript: WITH Deliverables.getItem(self.id) COMPUTE name=name, dueDate=dueDate, description=description, todoIDs=todoIDs WITH SELF COMPUTE name=name, dueDate='1973/01/01', description='unknown achee', todoIDs=[] The virtual instance is loaded by accessing attribute of 'name'. I thought any calls for inexistent objects in Deliverables would turn out default values. Yet the test result turned out an not_found error. The following modification (change to 'otherwise' clause) didn't make a difference: WITH Deliverables.getItem(self.id) COMPUTE name=name, dueDate=dueDate, description=description, todoIDs=todoIDs OTHERWISE LET name='unknown', dueDate='1973/01/01', description='unknown achee', todoIDs=[] One more question, i.e. the following expression WITH Deliverables.getItem(self.id) COMPUTE name, dueDate, description, todoIDs also trigered the 'not_known' error for every objects in Deliverables. Where goes wrong? Dirksen __ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/ ___ 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] How to make two racks work under one specialist?
Hi Steve, Deliverables has objects. The call to existent objects are successful. It's the call to the inexistent objects that doesn't turn out expectedly. But the first thing is whether my script is correct. Do you thing so? And any other way to test this kind of situation, i.e. passing processing when failure. And what's the best way to debug a skinscript. So far I can only guess when it comes to debug a skinscript. And what's wrong with WITH Deliverables.getItem(self.id) COMPUTE name, dueDate, description, todoIDs I cooked this up according to the SkinScriptSyntax wiki, but it doesn't work, complaining not_found when calling the existent objects. A change like this fixes the problem: WITH Deliverables.getItem(self.id) COMPUTE name=name, dueDate=dueDate, description=description, todoIDs=todoIDs What's wrong with my assingmentornamelist? Dirksen --- Steve Spicklemire [EMAIL PROTECTED] wrote: Hi Dirksen, To which specialist did you make this change? and did you make any other changes? Also (I'm sure this is obvious and I'm really just confirming what I'm already sure you've checked..) is there an item in the Deliverable's rack with the id you checked? thanks, -steve ___ 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 ) __ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/ ___ 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] How to make two racks work under one specialist?
Hi Dirksen, Ok.. you need to set the 'load by accessing attribute' field to 'original_object'. You may need to change your SkinScript to something like: WITH getMale(self.id) COMPUTE original_object=(RESULT is _.None) and NOT_FOUND or RESULT So that when getMale returns _.None, the SkinScript returns NOT_FOUND -steve "Dirksen" == Dirksen [EMAIL PROTECTED] writes: Dirksen Hi Steve, Dirksen Both racks are set to be loaded by accessing 'id', which, Dirksen as you guessed right, don't appear in handling attributes Dirksen list! Dirksen This is the simplified skinscript in maleMemberRack: WITH Dirksen getMale(self.id) COMPUTE original_object=RESULT WITH Dirksen self.original_object COMPUTE name=id, gender=gender, Dirksen email=email Dirksen getMale is a python method: member = getMember(id) if Dirksen id.gender == 'male': return member Dirksen Things just go opposite direction in femaleMemberRack. Dirksen What do you think? Dirksen Dirksen Dirksen __ Do You Dirksen Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions Dirksen of Products. http://shopping.yahoo.com/ Dirksen ___ Zope Dirksen maillist - [EMAIL PROTECTED] Dirksen http://lists.zope.org/mailman/listinfo/zope ** No cross Dirksen posts or HTML encoding! ** (Related lists - Dirksen http://lists.zope.org/mailman/listinfo/zope-announce Dirksen 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] How to make two racks work under one specialist?
Hi Steve, Both racks are set to be loaded by accessing 'id', which, as you guessed right, don't appear in handling attributes list! This is the simplified skinscript in maleMemberRack: WITH getMale(self.id) COMPUTE original_object=RESULT WITH self.original_object COMPUTE name=id, gender=gender, email=email getMale is a python method: member = getMember(id) if id.gender == 'male': return member Things just go opposite direction in femaleMemberRack. What do you think? Dirksen __ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/ ___ 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] How to make two racks work under one specialist?
I set up two racks in one specialist, one is maleMemberRack, the other femaleMemberRack. Both are loaded by accessing attribute id, and have skinscripts to retrieve data from a db. Suppose the femaleMemberRack gets loaded first, it finds out from the db that the 'id' is a male, then how can it pass the process to the maleMemberRack? Dirksen __ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/ ___ 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] How to make two racks work under one specialist?
Hi Dirksen, Hmm... why not have the query that gets data qualify by gender: SQL Query: getMemberByGender parameters member_id, gender select * from members where dtml-sqltest member_id type=string and dtml-sqltest gender type=string Then in the SkinScript for maleMemberRack: WITH QUERY getMemberByGender(member_id=self.id, gender='male') COMPUTE blah, blah, blah -steve "Dirksen" == Dirksen [EMAIL PROTECTED] writes: Dirksen I set up two racks in one specialist, one is Dirksen maleMemberRack, the other femaleMemberRack. Both are Dirksen loaded by accessing attribute id, and have skinscripts to Dirksen retrieve data from a db. Suppose the femaleMemberRack Dirksen gets loaded first, it finds out from the db that the 'id' Dirksen is a male, then how can it pass the process to the Dirksen maleMemberRack? Dirksen Dirksen Dirksen __ Do You Dirksen Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions Dirksen of Products. http://shopping.yahoo.com/ Dirksen ___ Zope Dirksen maillist - [EMAIL PROTECTED] Dirksen http://lists.zope.org/mailman/listinfo/zope ** No cross Dirksen posts or HTML encoding! ** (Related lists - Dirksen http://lists.zope.org/mailman/listinfo/zope-announce Dirksen 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] How to make two racks work under one specialist?
Hi Dirksen, Forgot to mention... you should probably choose some attribute other than 'id' as the attribute to check for your DataSkin. The 'id' attribute is always there... -steve "Steve" == Steve Spicklemire [EMAIL PROTECTED] writes: Steve Hi Dirksen, SteveHmm... why not have the query that gets data qualify by Steve gender: Steve SQL Query: getMemberByGender Steve parameters member_id, gender Steve select * from members where dtml-sqltest member_id Steve type=string and dtml-sqltest gender type=string Steve Then in the SkinScript for maleMemberRack: Steve WITH QUERY getMemberByGender(member_id=self.id, Steve gender='male') COMPUTE blah, blah, blah Steve -steve "Dirksen" == Dirksen [EMAIL PROTECTED] writes: Dirksen I set up two racks in one specialist, one is Dirksen maleMemberRack, the other femaleMemberRack. Both are Dirksen loaded by accessing attribute id, and have skinscripts to Dirksen retrieve data from a db. Suppose the femaleMemberRack Dirksen gets loaded first, it finds out from the db that the 'id' Dirksen is a male, then how can it pass the process to the Dirksen maleMemberRack? Dirksen Dirksen Dirksen __ Do You Dirksen Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions Dirksen of Products. http://shopping.yahoo.com/ Dirksen ___ Zope Dirksen maillist - [EMAIL PROTECTED] Dirksen http://lists.zope.org/mailman/listinfo/zope ** No cross Dirksen posts or HTML encoding! ** (Related lists - Dirksen http://lists.zope.org/mailman/listinfo/zope-announce Dirksen 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 )
