From: Jeremy Evans <code@...>
Date: 2008-12-25T10:51:10+09:00
Subject: Re: Sequel Newbie question

Ruby Newbie wrote:
> Hello Folks, I am trying out sequel and have a simple question.
> 
> Here is my sample:
> DB = Sequel.connect('mysql://blah:blah@localhost:3306/thyu')
> 
> news_stories = DB[:feed_items].filter({:content_grabbed => '0'} &
> (:url.like(/abcd.com/)))
> 
> puts news_stories.count
> for story in news_stories
> # logic to grab content
>      if (content.length > 0)
>          contentDoc = Hpricot(content).to_plain_text
>          File.open("#{article_id}.txt", 'w') {|f| f.write(contentDoc) }
>          puts article_id
>          story.update(:content_grabbed => '1') # does seem to update ..

story is a Hash, not a Sequel::Model.  You are calling Hash#update, 
which updates the Hash, but does not change the database.  What you want 
to do is:

  # Filter to just the record, then update
  DB[:feed_items].filter(:id=>story[:id]).update(:content_grabbed => 
'1')

Or you could just use a model, which will do basically the same thing.

>          # Also how do I save another data to ANother table?

Just change the table you are using, and assuming the record would be 
new in that table:

  DB[:feed_items2].insert(story)

>          # I get an sql error.

You need to post the error you are getting with a traceback in order to 
provide adequate support.

>          puts "Did it update?"
>          exit
>      end
> end

Jeremy
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