On 12 Apr., 18:59, Nick Hoyle <rails-mailing-l...@andreas-s.net>
wrote:
> I want to parse multiple feeds but i have ran into problems
>
> Im doing a query on a table which returns rss feed urls stored in an
> instance variable called @urls .
>
> with each of these eed urls i want to parse them like below
>
> @feeds = SimpleRSS.parse open(@urls.feed_url)
>
> however this only works when doing a query for first or last and not
> find:all. eg: just 1 feed url
>
> undefined method `feed_url' for #<Array:0x7f97c3f4faf8>
>
> any suggestions on what the problem is? ive tried the approach of trying
> to put this into a loop but had no luck and are struggling to find a
> solution
To me the problem is pretty obvious. You are trying to call an
undefined method 'feed_url' on an Array. To make this work you should
call the method on each of the items in the Array individually. Like
this:
@feeds = []
@urls.each do |url|
@feeds << SimpleRSS.parse open(url.feed_url)
end
You need to know, that whenever you're asking ActiveRecord for
multiple records in the database, they will always come back as an
Array with each item representing a record or model. But when you're
asking for just a single record (Model.find(:first) or Model.find
(:last)) you simply get the record/model back.
--
Best regards,
David Knorr
http://twitter.com/rubyguy
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