[opencms-dev] How to associate downloads with pages?

Tristan Roddis tristan at roddis.org
Thu May 15 13:37:02 CEST 2003


On Thu, May 15, 2003 at 10:30:44PM +1200, David Tildesley (DSLWN) wrote:
> why don't you write java class or JSP code using ocms API to list files in a
> parameter specified download VFS directory and read properties associated
> with each file for displaying title and building link. Incorporate in
> template.

That's what I was thinking of doing for the display side of things.  My
problem is to do with the fact that each page will have different
downloads displayed on it, so I need some way to tell the page which
download files to display, rather than just 'show all files in this VFS
directory' for every page...

I am starting to think that the most OpenCMS-y way to do this would be to
store the list of download resources as a property of each page (i.e.
option c) below), by using the CmsOject.writeProperty() method. Does
anybody have any better ideas? (and/or suggestions as to why this might be
a Bad Thing - e.g. is there a size limit for each property?)

Thanks,

-T.

> > -----Original Message-----
> > From: Tristan Roddis [mailto:tristan at roddis.org]
> > Sent: Thursday, 15 May 2003 11:14 p.m.
> > To: opencms-dev at opencms.org
> > Subject: Re: [opencms-dev] How to associate downloads with pages?
> > 
> > 
> > On Wed, May 14, 2003 at 12:56:06PM +0300, Dimitri Bougoulias wrote:
> > 
> > > I'm working on a module that does that easily and I may be 
> > able to publish
> > > it to the opencms site by the end of the month.
> > 
> > Unfortunately, I need to get started straight away :(
> > 
> > Can I ask where you're planning to store this information? Is it:
> > 
> > a) in a new database table (two columns: pageUri and downloadUri)
> > b) in an XML definition file somewhere in the VFS (lots of 
> > blocks along
> > the lines of:
> > <page name="/website/section/foo.html">
> >   <download>/downloads/gallery1/bar.doc</download>
> >   <download>/downloads/gallery2/baz.pdf</download>
> > </page>
> > c) as a Property of the page (along the lines of
> > Downloads: /downloads/gallery1/bar.doc,/downloads/gallery2/baz.pdf )
> > d) other (please state)
> > 
> > Also, does anybody else have any suggestions as to the best way to do 
> > this? You can just reply with a,b,c etc. if you want :)
> > 
> > Thanks,
> > 
> > -T.
> > 
> > > -----Original Message-----  
> > > From: opencms-dev-admin at opencms.org 
> > [mailto:opencms-dev-admin at opencms.org]
> > > On Behalf Of Tristan Roddis
> > > Sent: Wednesday, May 14, 2003 1:34 PM
> > > To: opencms-dev at opencms.org
> > > Subject: [opencms-dev] How to associate downloads with pages?
> > > 
> > > 
> > > I need to let site administrators assign downloadable files 
> > to any page 
> > > within the site, and have them appear as a 
> > prettily-formatted table at the 
> > > bottom of the page with the following fields:
> > > 
> > > Title, file size, file type
> > > 
> > > Because the design dictates that these need to be in a 
> > table, then I can't 
> > > just use the standard HTML page editor, as our 
> > administrators don't know 
> > > HTML [plus the downloads function doesn't seem to work in 
> > 4.6.6 :) - see 
> > > thread 'Ledit is driving me crazy')] 
> > > 
> > > So, I was wondering if anybody had any suggestions as to 
> > the best (and 
> > > most OpenCMS-like) way of doing this?
> > > 
> > > Essentially I can see two problems: 1) where to store the 
> > information that 
> > > associates download files with pages and 2) how best to let 
> > the user 
> > > assign downloads to pages. 
> > > 
> > > For 1) I can think of:
> > > 
> > > a) in a new database table (two columns: pageUri and downloadUri)
> > > b) in an XML definition file somewhere in the VFS (lots of 
> > blocks along 
> > > the lines of:
> > > <page name="/website/section/foo.html">
> > >   <download>/downloads/gallery1/bar.doc</download>
> > >   <download>/downloads/gallery2/baz.pdf</download>
> > > </page>
> > > c) as a Property of the page (along the lines of 
> > > Downloads: /downloads/gallery1/bar.doc,/downloads/gallery2/baz.pdf )
> > > d) other (please state)
> > > 
> > > Then my display class can read from one of the above, get 
> > the resource
> > > title, filesize and type, and insert some 
> > prettily-formatted HTML as a data
> > > block into the display template.
> > > 
> > > For 2) I can think of:
> > > 
> > > a) A module or other admin template that will firstly allow 
> > a user to 
> > > select a page, and secondly allow a user to add and remove 
> > the downloads 
> > > assigned to the page
> > > b) Adding/reusing a button on the HTML editor to allow 
> > users to assign 
> > > downloads to that page
> > > c) other (please state)
> > > 
> > > Has anybody got any opinions on which of the above choices 
> > would be best?  
> > > Factors to consider include i) how easy is it to implement 
> > and ii) how well
> > > does it fit in with the rest of OpenCMS (e.g. I'd imagine 
> > that reading a
> > > page's properties is easier and more OpenCMS-like than 
> > using a sepearate
> > > database table). Efficiency isn't a great concern as it's a 
> > very small site,
> > > and we'll be using static export.
> > > 
> > > Also, any pointers or tips for how to use any exisiting 
> > OpenCMS components 
> > > (e.g. the file picker or the download gallery selection 
> > pages) would be 
> > > greatly appreciated.
> > > 
> > > Thanks in advance,
> > > 
> > > -Tristan.
> > > 
> > > -- 
> > > tristan at roddis.org                              
> http://www.roddis.org
> > _______________________________.oOo._________________________________
> > "Software without secrets."                      http://www.linux.org
> > _______________________________________________
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> 
> -- 
> tristan at roddis.org                              http://www.roddis.org
> _______________________________.oOo._________________________________
> "This is war!"      http://www.theregister.co.uk/content/6/26433.html
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-- 
tristan at roddis.org                              http://www.roddis.org
_______________________________.oOo._________________________________
"Linux. The best choice for embedded systems."
                                          http://www.linuxdevices.com



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