This has probably already been covered many times before, but my scan of the mailing list didn't turn up anything, so here it comes again... I want to build a navigation bar for a folder with each sub-folder having a certain property (e.g. 'isMenu') defined creating a link in the nav bar (i.e. sub-folders without the 'isMenu' property being defined should not be in the nav bar). Seems pretty simple so far. When a sub-folder is selected, I want it to display the same nav bar as the parent folder to allow navigation within this section of the site. The problem is that the nav bar for the sub-folders do not show any items at all (because their PARENTS[0] is not the same as for the parent folder). I've tried a lot of different things (too numerous to list here), but in all cases the acquisition logic defeated my attempts to solve it. I finally got it to work by using the following: <dtml-if "PARENTS[0].id == 'rootFolder'"> <dtml-call "REQUEST.set('root',PARENTS[0])"> <dtml-else> <dtml-call "REQUEST.set('root',PARENTS[1])"> </dtml-if> <dtml-in "root.objectValues(['Folder'])"> <dtml-with sequence-item only> <dtml-if "_.has_key('isMenu')"> ...<dtml-var id>... </dtml-if> </dtml-with> </dtml-in> The thing I don't like is having to test explicitly for the name of the root folder in the top line, since it prevents me from using the same DTML in some other part of the site. Does someone have a suggestion for a better way of doing this whole thing? Dave Morrill
I haven't seen any way to avoid special handling of the root folder. In http://www.zope.org/Members/lstaffor/Breadcrumbs I use expr="PARENTS[0]==PARENTS[-1]" to detect the root folder. You might also use PARENTS.len. HTH -- Loren
-----Original Message----- From: zope-admin@zope.org [mailto:zope-admin@zope.org]On Behalf Of David C. Morrill Sent: Wednesday, October 13, 1999 13:56 To: zope@zope.org Subject: [Zope] Problem creating navigation bar
This has probably already been covered many times before, but my scan of the mailing list didn't turn up anything, so here it comes again...
I want to build a navigation bar for a folder with each sub-folder having a certain property (e.g. 'isMenu') defined creating a link in the nav bar (i.e. sub-folders without the 'isMenu' property being defined should not be in the nav bar). Seems pretty simple so far.
When a sub-folder is selected, I want it to display the same nav bar as the parent folder to allow navigation within this section of the site.
The problem is that the nav bar for the sub-folders do not show any items at all (because their PARENTS[0] is not the same as for the parent folder). I've tried a lot of different things (too numerous to list here), but in all cases the acquisition logic defeated my attempts to solve it.
I finally got it to work by using the following:
<dtml-if "PARENTS[0].id == 'rootFolder'"> <dtml-call "REQUEST.set('root',PARENTS[0])"> <dtml-else> <dtml-call "REQUEST.set('root',PARENTS[1])"> </dtml-if> <dtml-in "root.objectValues(['Folder'])"> <dtml-with sequence-item only> <dtml-if "_.has_key('isMenu')"> ...<dtml-var id>... </dtml-if> </dtml-with> </dtml-in>
The thing I don't like is having to test explicitly for the name of the root folder in the top line, since it prevents me from using the same DTML in some other part of the site. Does someone have a suggestion for a better way of doing this whole thing?
Dave Morrill
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OK, since I already went off half-cocked once, I might as well try it again. Now I understand that the root folder for this method is not the Zope root. To address the issue of reusing the method with a different "method root", suppose the method "NavBar" were part of a Z Class (or perhaps the default method of a Z Class object). Then it could have an instance constant "Root" that could be assigned the right folder ID for every instance. The method "NavBar" itself would be inherited from the Class, so any changes to the class would always be reflected in all the instances. Just an idea. Maybe not a good one. I've got Z Classes on the brain right now. -- Loren
-----Original Message----- From: zope-admin@zope.org [mailto:zope-admin@zope.org]On Behalf Of David C. Morrill Sent: Wednesday, October 13, 1999 13:56 To: zope@zope.org Subject: [Zope] Problem creating navigation bar
This has probably already been covered many times before, but my scan of the mailing list didn't turn up anything, so here it comes again...
I want to build a navigation bar for a folder with each sub-folder having a certain property (e.g. 'isMenu') defined creating a link in the nav bar (i.e. sub-folders without the 'isMenu' property being defined should not be in the nav bar). Seems pretty simple so far.
When a sub-folder is selected, I want it to display the same nav bar as the parent folder to allow navigation within this section of the site.
The problem is that the nav bar for the sub-folders do not show any items at all (because their PARENTS[0] is not the same as for the parent folder). I've tried a lot of different things (too numerous to list here), but in all cases the acquisition logic defeated my attempts to solve it.
I finally got it to work by using the following:
<dtml-if "PARENTS[0].id == 'rootFolder'"> <dtml-call "REQUEST.set('root',PARENTS[0])"> <dtml-else> <dtml-call "REQUEST.set('root',PARENTS[1])"> </dtml-if> <dtml-in "root.objectValues(['Folder'])"> <dtml-with sequence-item only> <dtml-if "_.has_key('isMenu')"> ...<dtml-var id>... </dtml-if> </dtml-with> </dtml-in>
The thing I don't like is having to test explicitly for the name of the root folder in the top line, since it prevents me from using the same DTML in some other part of the site. Does someone have a suggestion for a better way of doing this whole thing?
Dave Morrill
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To address the issue of reusing the method with a different "method root", suppose the method "NavBar" were part of a Z Class (or perhaps the default method of a Z Class object). Then it could have an instance constant "Root" that could be assigned the right folder ID for every instance. The method "NavBar" itself would be inherited from the Class, so any changes to the class would always be reflected in all the instances.
Sounds like it might work. I'll give it a try tomorrow. Thanks... Dave Morrill
Hi David! On Wed, 13 Oct 1999, David C. Morrill wrote:
To address the issue of reusing the method with a different "method root", suppose the method "NavBar" were part of a Z Class (or perhaps the default method of a Z Class object). Then it could have an instance constant "Root" that could be assigned the right folder ID for every instance. The method "NavBar" itself would be inherited from the Class, so any changes to the class would always be reflected in all the instances.
Sounds like it might work. I'll give it a try tomorrow. Thanks...
Dave Morrill
Not exactly sure how you want your nav bar to work. On my site I have the ability to see the current documents/folders siblings and also its children (if it has any). I don't know if this is exactly what you would want for your system. You might want to look at my site (http://www.sesgroup.net) to see if this is anything like what you might need. If so I can send you the code that I use for it. Cheers, Benno
Everyone is now welcome to check out my navigation bar product. It is really meant more as an educational product than anything else. I doubt it will work without modification, although you never know. The url to download is: http://www.zope.org/Members/Benno To see them in action check out: http://www.sesgroup.net I hope this is of some help to someone :) Cheers, Benno
participants (3)
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Ben Leslie -
David C. Morrill -
Loren Stafford