eRuby and URL rewriting

ruby-talk
1

I am in the process of doing some web page authoring using eRuby.

My question is this-- how do I access the post/get information in URL
rewriting? I know in PHP you use something like

$_GET[“key”]

given the following URL: http://www.xyz.com/index.html?key=RUBYRULZ

Does eRuby have the equivalent?

···

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2

I am in the process of doing some web page authoring using eRuby.

My question is this-- how do I access the post/get information in URL
rewriting? I know in PHP you use something like

$_GET[“key”]

given the following URL: .xyz Domain Names | Join Generation XYZ

use CGI.rb for that kind of thing, it plays nicely with eruby.

···

–
The price of seeking to force our beliefs on others is that someday
they might force their beliefs on us.
– Mario Cuomo
Rasputin :: Jack of All Trades - Master of Nuns

3

require ‘cgi’
cgi = CGI.new

key = cgi[‘key’]

p key

[ "RUBYRULZ " ]

key.type

Array

cgi.query_string.split(“&”).each {|x| p x }

"RUBYRULZ "

#“rubyrulz”

-r.

Rasputin wrote:

···

I am in the process of doing some web page authoring using eRuby.

My question is this-- how do I access the post/get information in URL
rewriting? I know in PHP you use something like

$_GET[“key”]

given the following URL: .xyz Domain Names | Join Generation XYZ

use CGI.rb for that kind of thing, it plays nicely with eruby.

4

“Bermejo, Rodrigo” rodrigo.bermejo@ps.ge.com writes:

cgi.query_string.split(“&”).each {|x| p x }

"RUBYRULZ "

#“rubyrulz”

Actually, it’s:

irb(main):002:0> cgi.query_string.split(“&”).each {|x| p x }
“key=RUBYRULZ”
“key2=rubyrulz”

I’m sure you just meant that as an example of how to access the query
string directly, but FYI, it’s broken in other ways too-- modern
browsers are allowed to use ‘;’ to separate variables in a GET
request. In fact, I believe it is now the preferred form. Much
friendlier to do:

cgi.keys.each { |key| p cgi[key] }

anyway :slight_smile:

-=Eric

···

–
Come to think of it, there are already a million monkeys on a million
typewriters, and Usenet is NOTHING like Shakespeare.
– Blair Houghton.

5

.xyz Domain Names | Join Generation XYZ

require ‘cgi’
cgi = CGI.new

key = cgi[‘key’]
p key

[ "RUBYRULZ " ]

key.type

Array

cgi.query_string.split(“&”).each {|x| p x }

"RUBYRULZ "

#“rubyrulz”

See below for an rhtml file

Rasputin wrote:

I am in the process of doing some web page authoring using eRuby.

My question is this-- how do I access the post/get information in URL
rewriting? I know in PHP you use something like

given the following URL: .xyz Domain Names | Join Generation XYZ

For the sake of completeness, here’s a .rhtml example:

<% require ‘cgi’ # Require the CGI library
cgi = CGI.new() # New CGI object
key = cgi.params[‘key’]
%>Test

<% if key.empty? %> Please enter the key:
<% else %> the key is :<%= key %> <% end %>
···

–
Radioactive cats have 18 half-lives.
Rasputin :: Jack of All Trades - Master of Nuns

6

Eric Schwartz wrote:

“Bermejo, Rodrigo” rodrigo.bermejo@ps.ge.com writes:

cgi.query_string.split(“&”).each {|x| p x }

"RUBYRULZ "

#“rubyrulz”

Actually, it’s:

irb(main):002:0> cgi.query_string.split(“&”).each {|x| p x }
“key=RUBYRULZ”
“key2=rubyrulz”

I’m sure you just meant that as an example of how to access the query
string directly,

Yeah a mistake…I’m not as cleaver as irb =)

but FYI, it’s broken in other ways too-- modern
browsers are allowed to use ‘;’ to separate variables in a GET
request.

Oh, I did know it …modern browsers like … ? …just to be aware of

In fact, I believe it is now the preferred form. Much
friendlier to do:

cgi.keys.each { |key| p cgi[key] }

Thanks

anyway :slight_smile:

-=Eric

BTW, I really don’t understand why cgi[‘query’].class => Array ?

-Ronnie.

7

– “Bermejo, Rodrigo” rodrigo.bermejo@ps.ge.com writes: –

BTW, I really don’t understand why cgi[‘query’].class => Array ?

Because it is possible to specify more than one value for param either in
the URL in the case of a GET or in the header in the case of a POST.

For example, given the following form:

<html>
 <body>
  <form method="get">
   What kinds of fruit do you like? <br />
   <input type="checkbox" name="fruit" value="apples" /> Apples <br />
   <input type="checkbox" name="fruit" value="oranges" /> Oranges <br />
   <input type="checkbox" name="fruit" value="cherries"/> Cherries <br

/>



If you check Apples and Oranges, then press submit the following url will be
submitted:

http://myurl.com/?fruit=apples&fruit=Oranges

So:

cgi.params["fruit"] #=> ["apples","oranges"]

If you intend to only allow one value to be submitted, just use Array#first:

fruit = cgi.params["fruit"].first #=> "apples"

I used to think that this was a frustrating syntax, but I now realize this
is an essential part of the HTTP spec.

···

John Long
www.wiseheartdesign.com