[RndTbl] trouble with Firewatir

Tue Apr 20 12:35:56 CDT 2010

If you RTSL a bit you'll see that calling browser.frame creates a new
element but doesn't validate it actually found anything. When you call the
html method it first asserts that the object exists and throws an exception
if not.

The located=false comes from the element#inspect method, (which just taught
me a new Ruby idiom: !!@o returns true if @o is a valid object or false if
it isn't.) So located=false means that the object never existed, nor will it
ever.

While poking around I saw a locate_frame method. Maybe that might work
better? (It's actually possible that .frame uses locate_frame, I didn't
trace it far enough)

Failing that, what about opening the frame directly?

Sean

On Tue, Apr 20, 2010 at 12:05 PM, Dan Martin <ummar143 at shaw.ca> wrote:

> As noted in the previous email
> >> browser.frame("main")
> => #<FireWatir::Frame:0x1a90dd4 located=false how=:name what="main">
>
> "located=false" seems to be Firewatir's way of saying that the object
> doesn't exist until I ask for it.
> If I try to use it anyway, I get an unknown object exception
>
> >> browser.frame("main").html
> Watir::Exception::UnknownObjectException: Unable to locate element, using
> :name, "main"
> from
> /Library/Ruby/Gems/1.8/gems/firewatir-1.6.5/lib/firewatir/element.rb:907:in
> `assert_exists'
> from
> /Library/Ruby/Gems/1.8/gems/firewatir-1.6.5/lib/firewatir/elements/frame.rb:34:in
> `html'
> from (irb):62
>
> On 20-Apr-10, at 11:34 AM, Sean Walberg wrote:
>
>
> Looking at the rdocs, http://wtr.rubyforge.org/rdoc/1.6.5/, have you tried
>
> browser.frame("main").html
>
> ?
>
> On Tue, Apr 20, 2010 at 10:51 AM, Dan Martin <ummar143 at shaw.ca> wrote:
>
>> I am learning to navigate and scrape.  I have had more success with
>> Firewatir than Ruby mechanize, but both are poorly documented.
>>
>> Current problem:  logging into a site webpage, Firwatir can see the
>> frames, but cannot access them.
>>
>>  >> browser.show_frames
>> There are 3 frames
>> frame: name: topbar
>>       index: 1
>> frame: name: langFrame
>>       index: 2
>> frame: name: main
>>       index: 3
>> => 0..2
>>
>>  >> browser.frame(:index, 1)
>> => #<FireWatir::Frame:0x1a9260c located=false how=:index what=1>
>>
>>  >> browser.frame("main")
>> => #<FireWatir::Frame:0x1a90dd4 located=false how=:name what="main">
>>
>> Firefox shows the webpage source [I show only the top levels]
>> structure as:
>>
>> <html>
>>
>> <head>
>>        <meta http-equiv="content-type"
>> content="text/html;charset=iso-8859-1">
>>        <title>TITLE</title>
>>        <link rel="stylesheet" href="all.css">
>>
>>        <script language="JavaScript" src="WEBPAGE"></script>
>>        <script language="JavaScript">FUNCTIONS</script>
>> </head>
>>
>>        <frameset rows="63,0,*" border="0" id="frameset_ID"
>> framespacing="0"
>> frameborder="no" onload="loadHomepage(1);" onunload="forceLogout();">
>>                <frame src="/TDM/header.htm" name="topbar" scrolling="no"
>> noresize>STUFF IN HERE</frame>
>>
>>                <frame name="langFrame" src="lang.html">STUFF IN
>> HERE</frame>
>>                <frame src="" id="main_ID" name="main" noresize>STUFF IN
>> HERE THAT I
>> WANT</frame>
>>        </frameset>
>>
>>        <noframes>
>>                STUFF IN HERE
>>        </noframes>
>>
>> </html>
>>
>>
>> I cannot access any forms etc included in the frame unless I can
>> name / access the frame.
>> Any ideas?
>>
>> Dan Martin
>> GP Hospital Practitioner
>> Computer Scientist
>> ummar143 at shaw.ca
>> (204) 831-1746
>> answering machine always on
>>
>> _______________________________________________
>> Roundtable mailing list
>> Roundtable at muug.mb.ca
>> http://www.muug.mb.ca/mailman/listinfo/roundtable
>>
>
>
>
> --
> Sean Walberg <sean at ertw.com>    http://ertw.com/
>  _______________________________________________
> Roundtable mailing list
> Roundtable at muug.mb.ca
> http://www.muug.mb.ca/mailman/listinfo/roundtable
>
>
> Dan Martin
> GP Hospital Practitioner
> Computer Scientist
> ummar143 at shaw.ca
> (204) 831-1746
> answering machine always on
>
>
> _______________________________________________
> Roundtable mailing list
> Roundtable at muug.mb.ca
> http://www.muug.mb.ca/mailman/listinfo/roundtable
>
>

-- 
Sean Walberg <sean at ertw.com>    http://ertw.com/
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