[RndTbl] trouble with Firewatir
Sean Walberg
sean at ertw.com
Tue Apr 20 13:26:23 CDT 2010
I mean to grab the page the frame references, instead of having Watir figure
it out.
I'm just trying to think what I'd do with Mech, as I've never heard of Watir
until now.
Sean
On Tue, Apr 20, 2010 at 1:20 PM, Dan Martin <ummar143 at shaw.ca> wrote:
> interesting - I get an "unknown frame exception" instead of an "unknown
> object exception" using locate.
>
> >> browser.frame("main").locate()
> Watir::Exception::UnknownFrameException: Unable to locate a frame using
> name and main.
> from
> /Library/Ruby/Gems/1.8/gems/firewatir-1.6.5/lib/firewatir/elements/frame.rb:29:in
> `locate'
> from (irb):66
>
> >> browser.frame("main").locate_frame(:name, 'main')
> 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/element.rb:1266:in
> `method_missing'
> from (irb):64
>
> How would I open the frame directly?
> The frame I want has an ID, even this doesn't help.
>
> An Xpath search fails:
> >> browser.element_by_xpath('//*[@id="main_ID"]')
> => #<FireWatir::Link:0x1a7fdcc located=false how=:jssh_name what=nil>
>
>
> On 20-Apr-10, at 12:35 PM, Sean Walberg wrote:
>
> 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/
> _______________________________________________
> 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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