How to cancel 'book' generation if no articles found

Big Al · 01-31-2011, 04:26 PM

I have several recipes customised to only download articles from the last day. The trouble is I end up with 'books' with no content as not all blogs get posts every day.

Is there a way to get the recipe to 'cancel' if no articles / new articles are found?

Or is there an alternative approach? I suspect I have missed something obvious somewhere as this would seem a common requirement to me.

Regards,
Alan

kovidgoyal · 01-31-2011, 05:41 PM

Override the parse_feeds method and raise an exception when no articles are present.

Big Al · 01-31-2011, 06:52 PM

After a quick spot of Python training I have implemented the above and it does work (of course;-) but it does leave a nasty error dialog on the screen instead of exiting gracefully.

Is there anything I can do to make this more graceful? Please excuse my lack of Python knowledge if this is what is holding me back from realising the answer.

kovidgoyal · 01-31-2011, 07:13 PM

No, there isn't.

01-31-2011, 04:26 PM	#1
Big Al Junior Member Posts: 2 Karma: 10 Join Date: Jan 2011 Device: Kindle	How to cancel 'book' generation if no articles found I have several recipes customised to only download articles from the last day. The trouble is I end up with 'books' with no content as not all blogs get posts every day. Is there a way to get the recipe to 'cancel' if no articles / new articles are found? Or is there an alternative approach? I suspect I have missed something obvious somewhere as this would seem a common requirement to me. Regards, Alan

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01-31-2011, 05:41 PM	#2
kovidgoyal creator of calibre Posts: 45,363 Karma: 27230406 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Override the parse_feeds method and raise an exception when no articles are present.

01-31-2011, 06:52 PM	#3
Big Al Junior Member Posts: 2 Karma: 10 Join Date: Jan 2011 Device: Kindle	After a quick spot of Python training I have implemented the above and it does work (of course;-) but it does leave a nasty error dialog on the screen instead of exiting gracefully. Is there anything I can do to make this more graceful? Please excuse my lack of Python knowledge if this is what is holding me back from realising the answer.

01-31-2011, 07:13 PM	#4
kovidgoyal creator of calibre Posts: 45,363 Karma: 27230406 Join Date: Oct 2006 Location: Mumbai, India Device: Various	No, there isn't.

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