Hi, OK, let me see if I can do that... I've already figured out that a python script/external method solution is what I'm after. But how to make it work? Anyone know about Greasemonkey in Firefox? Basically, it embeds a handy link in Web pages that have ISBN numbers in them (unique identifier for a book). When you configure Greasemonkey right, it checks for the book in your local catalog and returns a link to that book in your local library catalog. The trick is to use the same idea, but inside of Plone with an RSS feed that displays current bestsellers or other book-related stuff where there's an ISBN included. Here's the sort of python script I need, to the best of my knowledge, though the first function I can't use (it checks against an Amazon Wishlist--I don't want anything to be dependent on Amazon or a particular browser). Jon Udell provided it, and he's the one who wrote the LibraryLookup bookmarklet that does something similar to what I want: import amazon, re, urllib2 wishes = amazon.searchByWishlist('BNQ1T3SLPJS7'); def rss( items ): return """<rss version="0.91"> <channel> <title>LibraryLookup reminders</title> <link>http://www.amazon.com</link> <description>Remind me when books on my Amazon wishlist become available at the library</description> %s </channel> </rss> """ % items def isAvailable ( isbn ): url = 'http://ksclib.keene.edu/search/i=%s' % isbn page = urllib2.urlopen(url).read() return re.search ( 'AVAILABLE', page ) is not None items = '' for wish in wishes: isbn = wish.Asin if ( ( re.match( '\d{7,9}[\d|X]', isbn ) is not None) and isAvailable(isbn) ): items += """ <item> <title>%s</title> <link>%s</link> <description>%s</description> </item>\n """ % ( wish.ProductName, wish.URL, wish.Authors.Author ) output = rss ( items ) name = 'libraryReminders.xml' f = open(name,'w') f.write(output) f.close() -------------------------------------------------------- So, I need to simplify this script (get rid of the wishlist stuff), create an external method for it, then figure out how to get the template in CMFSin to call the external method. I've never done any of this before (which probably explains why I have a hard time describing my problem better). The CMFSin template I need to alter looks like this, and I'm not sure exactly where or how to call the method: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US" metal:use-macro="here/main_template/macros/master" i18n:domain="plone"> <metal:block fill-slot="base"> <tal:block tal:define="dummy python:request.set('disable_border', 1)" tal:replace="nothing"> Disable the tabs </tal:block> </metal:block> <div metal:fill-slot="main" tal:define="true python: 1; false python: 0; verbose python: 1; sin here/sin_tool; m request/synmap; results python:sin.sin(m); Batch python:modules['Products.CMFPlone'].Batch; b_start python:request.get('b_start',0); "> <div class="contentHeader"> <h1 tal:content="m">Title or id</h1> </div> <tal:block tal:define="batch python:Batch(results, 15, int(b_start), orphan=1)"> <!-- Navigation --> <div metal:use-macro="here/batch_macros/macros/navigation" /> <dl tal:repeat="obj batch"> <dt><a href="#" tal:attributes="href obj/link" tal:content="structure obj/title"/> <span tal:condition="python: obj.get('date') or nothing" tal:content="python: (obj['date'])"/></dt> <dd><span tal:condition="python: verbose and obj.get('description') or nothing" tal:replace="structure obj/description"/> </dd> </dl> <!-- Navigation --> <div metal:use-macro="here/batch_macros/macros/navigation" /> </tal:block> <p tal:condition="not: results" i18n:translate="description_no_items_in_feed"> There are currently no items in this feed. </p> </div> </html> -----Original Message----- From: Chris Withers [mailto:chris@simplistix.co.uk] Sent: Monday, April 04, 2005 6:12 AM To: MILLER Eva Cc: zope@zope.org Subject: Re: [Zope] RSS feed: post-processing? Sorry Eva, You'll need to explain your problem more succintly for people to be able to help. If you really do need to scrape the urls from the text, then a combination of python's xml handling and regular expressions is probably what you're after, best done in an external method and not a python script... cheers, Chris MILLER Eva wrote:
Hello,
I've been puzzling over something but can't figure out a solution. I have an RSS feed providing the content behind all the links on this page: http://demo.plinkit.org/interestsideas/goodreads/booklists.
There's a nice bookmarklet tool in the world called LibraryLookup that lets you check whether a book you find on Amazon or something is in your library's catalog by scraping up the ISBN and launching an ISBN catalog search. It's a javascript, really. I thought I would adapt this
to create a little add-on for the stuff the bestsellers RSS brings back
to my site. What I need to do is pluck out the ISBNs in the links on a page like this one:
http://demo.plinkit.org/interestsideas/goodreads/sinList?synmap=Hardcove
rFiction
The ISBNs are all in the URLs for the book titles ("isbn=Some10digitNumberHere"). How would I look for a piece of text in
that shape, i.e., isbn=5893193390, then, if it's there, copy and paste that piece of information into the LibraryLookup javascript I have. The
end result should be that, if there's an ISBN in a feed result, an extra link appears for each entry that says something like "Check the catalog," which you can click to look that book up in your own library's catalog.
I've been staring at the template that formats the RSS feed to figure out whether any TAL expression would work for this. I've been playing
with a short Python script, then wondering how to call it within that
template, but I think I have to use regular expressions to do it.
I'm sorry to be so lost on this, but I guess I am. I'd love to do something cool like this for our little Plinkit libraries. Can anyone
help? I'll take anything from a broad strategy to actual code snippets
(I'm a terrible programmer but a good librarian).
Thanks Eva the Librarian
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