mechanize：Mechanize::Page#iframes_with

everyday Ruby

以下のような HTML で

<html>
<head>
<title>iframe test</title>
</head>
<body>

<iframe src="iframe1.html" name="i1" width="200" height="100">foo</iframe>
<iframe src="iframe2.html" name="i2" width="400" height="300">bar</iframe>

</body>
</html>
>> require 'mechanize'
=> true
>> agent = Mechanize.new
=> #<Mechanize:0xb74a82e4 ...
>> page = agent.get('http://127.0.0.1:8080/test03_iframe.html')
=> #<Mechanize::Page
 {url #<URI::HTTP:0xb74a4964 URL:http://127.0.0.1:8080/test03_iframe.html>}
 {meta}
 {title "iframe test"}
 {iframes
  #<Mechanize::Page::Frame "i1" "iframe1.html">
  #<Mechanize::Page::Frame "i2" "iframe2.html">}
 {frames}
 {links}
 {forms}>

>> page.iframes_with(:src => //) {|f| p f}
[#<Mechanize::Page::Frame "i1" "iframe1.html">
, #<Mechanize::Page::Frame "i2" "iframe2.html">
]
=> [#<Mechanize::Page::Frame "i1" "iframe1.html">
, #<Mechanize::Page::Frame "i2" "iframe2.html">
]
>> page.iframes_with(:src => //) {|f| p f.src }
NoMethodError: undefined method `src' for #<Array:0xb74937a4>
	from (irb):5
	from (eval):6:in `iframes_with'
	from (irb):5
>> page.iframes_with(:src => //)
=> [#<Mechanize::Page::Frame "i1" "iframe1.html">
, #<Mechanize::Page::Frame "i2" "iframe2.html">
]
>> page.iframes_with(:src => //)[0]
=> #<Mechanize::Page::Frame "i1" "iframe1.html">

>> page.iframes_with(:src => //)[1]
=> #<Mechanize::Page::Frame "i2" "iframe2.html">

>> page.iframes_with(:src => //) {|f| p f.class }
Array
=> [#<Mechanize::Page::Frame "i1" "iframe1.html">
, #<Mechanize::Page::Frame "i2" "iframe2.html">
]
>> page.iframes_with(:src => //).each {|f| p f.class }
Mechanize::Page::Frame
Mechanize::Page::Frame
=> [#<Mechanize::Page::Frame "i1" "iframe1.html">
, #<Mechanize::Page::Frame "i2" "iframe2.html">
]
>> page.iframes_with(:src => //).each {|f| p f.src }
"iframe1.html"
"iframe2.html"
=> [#<Mechanize::Page::Frame "i1" "iframe1.html">
, #<Mechanize::Page::Frame "i2" "iframe2.html">
]