# Use URL only if aviable

**URL:** <https://www.ruby-forum.com/t/use-url-only-if-aviable/158758>\
**Category:** Rails\
**Created:** [January 27, 2009, 6:45pm UTC](https://www.ruby-forum.com/t/use-url-only-if-aviable/158758 "2009-01-27T18:45:01Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![chaosbanane](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/a698b9/32.png) [@chaosbanane](https://www.ruby-forum.com/u/chaosbanane)\
**Post date:** [January 27, 2009, 6:45pm UTC](https://www.ruby-forum.com/t/use-url-only-if-aviable/158758/1 "2009-01-27T18:45:01Z")

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hi

I have an RSS feed on my page and if the rss source is not aviable it  
prints out an error.

* * *

\<%= parseFeed(“[Domain.de - Seite nicht gefunden](http://www.domain.de/phpBB3/rss.php)”, 10) %\>

* * *

How can I tell ruby only to use the rss feed if the rss source is  
aviable?

something like unless? or so?

Greetings Chaos

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**Author:** ![chaosbanane](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/a698b9/32.png) [@chaosbanane](https://www.ruby-forum.com/u/chaosbanane)\
**Post date:** [February 1, 2009, 3:08pm UTC](https://www.ruby-forum.com/t/use-url-only-if-aviable/158758/2 "2009-02-01T15:08:56Z")

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anybody knows a solution? I would love to hear it 😉

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**Author:** ![chaosbanane](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/a698b9/32.png) [@chaosbanane](https://www.ruby-forum.com/u/chaosbanane)\
**Post date:** [February 1, 2009, 5:09pm UTC](https://www.ruby-forum.com/t/use-url-only-if-aviable/158758/3 "2009-02-01T17:09:19Z")

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On Tue, Jan 27, 2009 at 9:45 AM, Andi G.  
[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> I have an RSS feed on my page and if the rss source is not aviable it  
> prints out an error.

> \<%= parseFeed(“[Domain.de - Seite nicht gefunden](http://www.domain.de/phpBB3/rss.php)”, 10) %\>

[http://catb.org/~esr/faqs/smart-questions.html](http://catb.org/~esr/faqs/smart-questions.html)

–  
Hassan S. ------------------------ removed\_email\_address@domain.invalid