mechanize：Mechanize::Form#buttons_with, #buttons

everyday Ruby

以下のような HTML で

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

<form method="get" action="cgi/foo00.cgi" name="form1">
  <input type="submit" value="Send" />　
  <input type="reset"  value="Cancel" />
</form>

</body>
</html>
>> require 'mechanize'
=> true
>> agent = Mechanize.new
=> #<Mechanize:0xb7440540 ...
>> page = agent.get('http://127.0.0.1:8080/test11_button.html')
=> #<Mechanize::Page
 {url #<URI::HTTP:0xb743cbc0 URL:http://127.0.0.1:8080/test11_button.html>}
 {meta}
 {title "form test"}
 {iframes}
 {frames}
 {links}
 {forms
  #<Mechanize::Form
   {name "form1"}
   {method "GET"}
   {action "cgi/foo00.cgi"}
   {fields}
   {radiobuttons}
   {checkboxes}
   {file_uploads}
   {buttons
    #<Mechanize::Form::Submit:0xb74341dc
     @name=nil,
     @node=
      #(Element:0x..fdba1a17a {
        name = "input",
        attributes = [
          #(Attr:0x..fdba18690 { name = "type", value = "submit" }),
          #(Attr:0x..fdba18686 { name = "value", value = "Send" })]
        }),
     @value="Send">}>}>

>> f = page.form('form1')
=> #<Mechanize::Form
 {name "form1"}
 {method "GET"}
 {action "cgi/foo00.cgi"}
 {fields}
 {radiobuttons}
 {checkboxes}
 {file_uploads}
 {buttons
  #<Mechanize::Form::Submit:0xb74341dc
   @name=nil,
   @node=
    #(Element:0x..fdba1a17a {
      name = "input",
      attributes = [
        #(Attr:0x..fdba18690 { name = "type", value = "submit" }),
        #(Attr:0x..fdba18686 { name = "value", value = "Send" })]
      }),
   @value="Send">}>

>> f.buttons_with
=> [#<Mechanize::Form::Submit:0xb74341dc @name=nil, @value="Send", @node=#<Nokogiri::XML::Element:0x..fdba1a17a name="input" attributes=[#<Nokogiri::XML::Attr:0x..fdba18690 name="type" value="submit">, #<Nokogiri::XML::Attr:0x..fdba18686 name="value" value="Send">]>>]
>> f.buttons_with.size
=> 1
>> f.button_with
=> #<Mechanize::Form::Submit:0xb74341dc @name=nil, @value="Send", @node=#<Nokogiri::XML::Element:0x..fdba1a17a name="input" attributes=[#<Nokogiri::XML::Attr:0x..fdba18690 name="type" value="submit">, #<Nokogiri::XML::Attr:0x..fdba18686 name="value" value="Send">]>>
>> f.buttons
=> [#<Mechanize::Form::Submit:0xb74341dc @name=nil, @value="Send", @node=#<Nokogiri::XML::Element:0x..fdba1a17a name="input" attributes=[#<Nokogiri::XML::Attr:0x..fdba18690 name="type" value="submit">, #<Nokogiri::XML::Attr:0x..fdba18686 name="value" value="Send">]>>]
>> f.button
=> #<Mechanize::Form::Submit:0xb74341dc @name=nil, @value="Send", @node=#<Nokogiri::XML::Element:0x..fdba1a17a name="input" attributes=[#<Nokogiri::XML::Attr:0x..fdba18690 name="type" value="submit">, #<Nokogiri::XML::Attr:0x..fdba18686 name="value" value="Send">]>>

複数形の _with の場合は、「attr_reader :fields, :buttons, :file_uploads, :radiobuttons, :checkboxes」があるので _with の alias ではないらしい〜(なので引数は取れないはず)