Mechanize users - Jun 2009 - Migrate from Hpricot to Nokogiri

Hi,

I was using Mechanize with Hpricot in a rails app about 6 months ago.
I recently started to work on that app again, and was getting an
error:  "undefined method `text'' for
#<Array:0x7f8b0d349be0>".  It
took me a little bit of research, but I figured out that I was using a
newer version of the Mechanize gem on this machine and that it had
switched to using Nokogiri as its parser.

I would like to update my code to use Nokogiri since it is now the
default.  I have been looking around the documentation, but haven''t
been able to find any examples of what I am trying to do.  Can
somebody give me an example of how I would update the following line?

unless logged_in_page.links.text(/link text to find/).length > 0
   ... more code here ...
end

I also saw that there were Hpricot decorators for Nokogiri objects.  I
assume this would allow me to use my Hpricot code as-is, but I
couldn''t find an example of how to do that.  Could somebody give me an
example of that?

Thanks,

Jonathan

On Wed, Jun 17, 2009 at 7:55 PM, Jonathan
Huizingh<jhuizingh at mindless.com> wrote:
> Hi,
>
> I was using Mechanize with Hpricot in a rails app about 6 months ago.
> I recently started to work on that app again, and was getting an
> error: ?"undefined method `text'' for
#<Array:0x7f8b0d349be0>". ?It
> took me a little bit of research, but I figured out that I was using a
> newer version of the Mechanize gem on this machine and that it had
> switched to using Nokogiri as its parser.
>
Yes!  Your problem isn''t to do with hpricot vs nokogiri, but that the
links api has changed.  "links" returns a normal array now, so you
can''t call "text" on it.
> I would like to update my code to use Nokogiri since it is now the
> default. ?I have been looking around the documentation, but
haven''t
> been able to find any examples of what I am trying to do. ?Can
> somebody give me an example of how I would update the following line?
>
> unless logged_in_page.links.text(/link text to find/).length > 0
> ? ... more code here ...
> end
try this:

  unless logged_in_page.links_with(:text => /link text to find/).length >
0
    ...
  end
> I also saw that there were Hpricot decorators for Nokogiri objects. ?I
> assume this would allow me to use my Hpricot code as-is, but I
> couldn''t find an example of how to do that. ?Could somebody give
me an
> example of that?
If you''re only calling methods on mechanize, you shouldn''t
need to do that.

-- 
Aaron Patterson
http://tenderlovemaking.com/

Thanks.  Your suggestion worked like a charm.

I think what confused me is that this page
(http://mechanize.rubyforge.org/mechanize/EXAMPLES_rdoc.html) has
examples that show my way of doing it, even though they don''t seem to
work anymore.

Thanks again for the help.

Jonathan


On Thu, Jun 18, 2009 at 11:47 AM, Aaron
Patterson<aaron.patterson at gmail.com> wrote:
>
> Yes! ?Your problem isn''t to do with hpricot vs nokogiri, but that
the
> links api has changed. ?"links" returns a normal array now, so
you
> can''t call "text" on it.
>
>> I would like to update my code to use Nokogiri since it is now the
>> default. ?I have been looking around the documentation, but
haven''t
>> been able to find any examples of what I am trying to do. ?Can
>> somebody give me an example of how I would update the following line?
>>
>> unless logged_in_page.links.text(/link text to find/).length > 0
>> ? ... more code here ...
>> end
>
> try this:
>
> ?unless logged_in_page.links_with(:text => /link text to find/).length
> 0
> ? ?...
> ?end
>