I''m trying to use the CGI module to generate the html in a view but am
having trouble. My controller looks like:
class MyTestController < ApplicationController
def cgitest
require ''cgi''
@cgi=CGI.new("html3")
end
end
My cgitest.rhtml view document simply has:
<%= @cgi.out{@cgi.html{@cgi.head{}}} %>
Loading MyTest/cgitest, Rails tells me that ''html'' is an
invalid or
missing method. Why? When I perform the same sequence in irb, I get a
skeleton html document as expected.
I am very new to Ruby and RoR. I''ve used Perl''s CGI module for
a very
long time and it looks like Ruby''s is very similar. Does it make any
sense to even try this? Will Ruby purists laugh me out of the member''s
lounge? :)
Kirk
--
Posted via http://www.ruby-forum.com/.
On Fri, 16 Dec 2005, Kirk Bocek wrote:> I''m trying to use the CGI module to generate the html in a view but am > having trouble. My controller looks like: > > class MyTestController < ApplicationController > def cgitest > require ''cgi'' > @cgi=CGI.new("html3") > end > end > > My cgitest.rhtml view document simply has: > > <%= @cgi.out{@cgi.html{@cgi.head{}}} %>try <%= @cgi.html{ @cgi.head{} } %> #out sends the headers and returns nil - you need a string. hth. -a -- ==============================================================================| ara [dot] t [dot] howard [at] noaa [dot] gov | all happiness comes from the desire for others to be happy. all misery | comes from the desire for oneself to be happy. | -- bodhicaryavatara ===============================================================================
unknown wrote:> try > > <%= @cgi.html{ @cgi.head{} } %> > > #out sends the headers and returns nil - you need a string. >Thanks for the reply, hth, but nope: Same error-- "undefined method `html'' for #<CGI:0x2aaaac53fdb0>" If I pop "cgi.methods" into the view, the list I get back does not include ''html'' or any of the methods in CGI::HtmlExtension. I can''t figure out why. They are there when I execute the same instructions in irb, but are missing under rails. Kirk -- Posted via http://www.ruby-forum.com/.
I''m so new to RoR that I''m open to answers like: -- This is not how we do things in RoR. -- How could you even think this? -- RTFM (just give me a hint-- I''ve been reading everything) -- Let the scribes strike his name from the records and his family turned out into the desert! Kirk :) -- Posted via http://www.ruby-forum.com/.
Kirk Bocek wrote:> I''m so new to RoR that I''m open to answers like: > > -- This is not how we do things in RoR. > -- How could you even think this? > -- RTFM (just give me a hint-- I''ve been reading everything) > -- Let the scribes strike his name from the records and his family > turned out into the desert! >It appears the CGI::HtmlExtension isn''t getting loaded. Are you doing your test in Webrick? If so Rails overrides the CGI#initialize method for Webrick and it doesn''t call super. It''s in the railties/lib/webrick_server.rb file. The code from that file from rails trunk is: --- code start --- def initialize(type = "query", table = nil, stdin = nil) @env_table, @stdin = table, stdin if defined?(MOD_RUBY) && !ENV.key?("GATEWAY_INTERFACE") Apache.request.setup_cgi_env end extend QueryExtension @multipart = false if defined?(CGI_PARAMS) warn "do not use CGI_PARAMS and CGI_COOKIES" @params = CGI_PARAMS.dup @cookies = CGI_COOKIES.dup else initialize_query() # set @params, @cookies end @output_cookies = nil @output_hidden = nil end end --- code end --- So your "html3" argument is getting treated as the type, and you can see nothing seems to use the type! Perhaps you should try this with Apache and see if you get the same behavior. I know this doesn''t solve your issue, but I hope it helps give some understanding to what might be causing it. Zach
Zach Dennis wrote:> I know this doesn''t solve your issue, but I hope it helps give some > understanding to what might be causing it. > > ZachYes, that helps my understanding. Thanks. I''m not quite up to mucking about in Rails internals yet. Yes, this was under Webrick. I''ll get it installed in Apache and see what happens. Kirk -- Posted via http://www.ruby-forum.com/.
Kirk Bocek wrote:> I''ll get it > installed in Apache and see what happens.Yep, that did it. The CGI::HtmlExtension methods work as expected under Apache. I haven''t installed FastCGI, but this is for testing anyways. So is webrick broken then? Kirk -- Posted via http://www.ruby-forum.com/.
Kirk Bocek wrote:> I''m trying to use the CGI module to generate the html in a view but am > having trouble. My controller looks like: > > class MyTestController < ApplicationController > def cgitest > require ''cgi'' > @cgi=CGI.new("html3") > end > end > > My cgitest.rhtml view document simply has: > > <%= @cgi.out{@cgi.html{@cgi.head{}}} %>I don''t know why this fails, but:> This is not how we do things in RoR.Most people write HTML code directly and/or with helper methods like text_field. If you prefer to build (X)HTML cgi.rb-style, you might be interested in "Builder" templates: http://wiki.rubyonrails.com/rails/pages/HowtoGenerateXml -- Posted via http://www.ruby-forum.com/.
Andreas S. wrote:> Most people write HTML code directly and/or with helper methods like > text_field. If you prefer to build (X)HTML cgi.rb-style, you might be > interested in "Builder" templates: > http://wiki.rubyonrails.com/rails/pages/HowtoGenerateXmlWell, Andreas, I read this page and have *no* idea what it is saying. I''ve been writing web widgets forever using Perl and the Perl CGI module. Hence my questions here about the Ruby CGI module. Guess I''ll start at the builder.rubyforge.org link and see if I can figure things out. Are people using any html editors such as Dreamweaver to create views? Thanks for the pointer. Kirk -- Posted via http://www.ruby-forum.com/.
Kirk Bocek wrote:> Andreas S. wrote: >> Most people write HTML code directly and/or with helper methods like >> text_field. If you prefer to build (X)HTML cgi.rb-style, you might be >> interested in "Builder" templates: >> http://wiki.rubyonrails.com/rails/pages/HowtoGenerateXml > > Well, Andreas, I read this page and have *no* idea what it is saying. > I''ve been writing web widgets forever using Perl and the Perl CGI > module. Hence my questions here about the Ruby CGI module. Guess I''ll > start at the builder.rubyforge.org link and see if I can figure things > out. > > Are people using any html editors such as Dreamweaver to create views? > > Thanks for the pointer.Well, a simple example for your MyTestController is to create a file named app/views/layouts/my_test.rxml. The code should look something like: xml = Builder.new xml.instruct! # <?xml ..> xml.declare! ''DOCTYPE'', :html, # <!DOCTYPE ...> :PUBLIC, ''-//W3C//... '', ''...'' xml.html { # <html> xml.head { # <head> xml.title ''My test page'' # <title>My test page</title> } # </head> xml.body { # <body> xml.comment ''Test comment'' # <!-- Test comment --> xml.em ''TEST!'' # <em>TEST!</em> } # </body> } # </html> So xml is the builder object, any method you call on it (except a few special ones appended with a !) just translates to an XML tag by the same name (xml.head becomes <head>). If you supply parameters to the method, they define the content of the tag. If you give a block to a method, anything inside the block becomes nested within that tag (as you see with the xml.html above).> KirkE -- Posted via http://www.ruby-forum.com/.
Eero Saynatkari wrote:> Well, a simple example for your MyTestController is to > create a file named app/views/layouts/my_test.rxml. The > code should look something like:Okay, so with builder we''re back to straight Ruby code without the <% %> tags. Makes sense. Functionally, it looks pretty similar to CGI. I will take a look at Builder in more depth. Thanks. Kirk -- Posted via http://www.ruby-forum.com/.
Eero Saynatkari wrote:> The code should look something like:Eero, from my ''Rails Beginner'' viewpoint, there were a few things I needed to do to get your example to work. 1. Install Builder using Gem: ''gem install builder'' 2. Load builder in my controller: require ''rubygems'' require_gem ''builder'' 3. Change the first line of your example to ''xml = Builder::XmlMarkup.new'' Now it''s time to figure out the ''no styles'' message my browser generates... Thanks again. Kirk -- Posted via http://www.ruby-forum.com/.