DZone Snippets: form code

A simple XHTML submit form for ProjectX

jrobertson (James Robertson) — Sun, 13 Apr 2008 22:32:48 GMT

Preparing ProjectX API requests through the browser's address bar can get quite messy, however inputting the request through a simple form makes it much easier to read.



  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">



  

    ProjectX API

    

  

  

    ProjectX API form

    Enter the Project API XML to send a request to the server.

    

    xml_project

    

    

  

            src="http://www.w3.org/Icons/valid-xhtml10"

        alt="Valid XHTML 1.0 Strict" height="31" width="88" style="float:right;  border:0 "/>

  

  last updated: 13th April 2008

The web page can be seen at http://rorbuilder.info/r/projectx-api/index.html
The following XML request value when submitted should return an XML result containing the results and the method executed.

eg.

Upload a file using Ajax

jrobertson (James Robertson) — Sat, 23 Feb 2008 14:33:52 GMT

This code is categorised as Ajax because it "fits within my definition of Ajax" as explained from the Ajax File Upload [openjs.com] article.



  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">



  

    File upload

Upload a file using Ruby

jrobertson (James Robertson) — Sat, 23 Feb 2008 13:26:00 GMT

The following code was used to upload an image file to the web server. Source code origin: Ruby Language Stuff | mod_ruby File upload scripts [zytrax.com]

file: file_upload.cgi



#!/usr/bin/ruby



# ruby script fragment

require 'cgi'

require 'stringio'



cgi = CGI.new()  # New CGI object

puts "Content-Type: text/plain"

puts

print ''



# get uri of tx'd file (in tmp normally)

tmpfile = cgi.params['myfile'].first.path



# OR (functionally the same)

tmpfile = cgi.params['myfile'][0].path



# create a Tempfile reference

fromfile = cgi.params['myfile'].first



#displays the original file name as supplied in the form

puts fromfile.original_filename



# displays the content (mime) type e.g. text/html

puts fromfile.content_type



# create output file reference as original filename in our chosen directory

tofile = '/var/www/yourdomain.com/htdocs/r/'+fromfile.original_filename



# copy the file

# note the untaint prevents a security error

# cgi sets up an StringIO object if file < 10240

# or a Tempfile object following works for both

File.open(tofile.untaint, 'w') { |file| file << fromfile.read}

# when the page finishes the Tempfile/StringIO!) thing is deleted automatically



print ''

file: file_upload.html



  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">



  

    File upload

    

  

  

        action='/p/file_upload.cgi' method='post'>

Submit Form programmatically from PHP using JavaScript

dneuma (Daniel Neumann) — Tue, 19 Feb 2008 20:23:28 GMT

It´s something quite easy but may help a newby (as I´m now) in the future.
This is a simple function in PHP to insert a JavaScript sentence which will do the same action as if the user would be pressing the Submit Button.
It can be used to use any control as a Submit Button or in case you make a form you need to send without interaction from the user.
the $FormName must be the name specified in the Form tag (i.e.:

), if you didn´t specified any, you must now :)
Lastly, just a tip regarding a trouble I had and may be you case too... if you have a form with all hidden fields, it won´t work, you have to have at least something echoed inside the form, just a letter can help, anyway, as it will redirect to the action URL, it should not be a problem as the form will disappear.



function SubmitForm($FormName)

//JavaScript function to submit a form programmatically

//$FormName must be form´s name (as specified in the opening form tag)

{

	echo '';

}

'Delete a Twitter entry' dissected

jrobertson (James Robertson) — Sat, 16 Feb 2008 13:17:07 GMT

The following code was copied from my Twitter home page, it shows how to delete a twitter entry on the server.

raw HTML code with embedded JavaScript code.





title="Delete this update?">

same code as above but with comments.

 request. 

                 // However if JavaScript had been disabled for some reason the 

                 //  would have acted normally, meaning the record 

                 // would have been deleted from following the URL request directly.

 "

Note: Twitter needs JavaScript for the web page to work properly, I've tried and it is not possible to delete a record without JavaScript. The authenticity_token has been altered by me to prevent any malicious activity on my Twitter account.

Blueprint CSS forms extension

sporkyy (Todd Sayre) — Sat, 19 Jan 2008 17:00:14 GMT

Changes the widths of form elements so they fit into smaller columns created using the Blueprint CSS framework.

div.span-1 input.text, div.span-1 input.title { width:  30px; }

div.span-2 input.text, div.span-2 input.title { width:  50px; }

div.span-3 input.text, div.span-3 input.title { width:  90px; }

div.span-4 input.text, div.span-4 input.title { width: 130px; }

div.span-5 input.text, div.span-5 input.title { width: 170px; }

div.span-6 input.text, div.span-6 input.title { width: 210px; }

div.span-7 input.text, div.span-7 input.title { width: 250px; }

div.span-8 input.text, div.span-8 input.title { width: 290px; }



div.span-1 select { width:  30px; }

div.span-2 select { width:  50px; }

div.span-3 select { width:  90px; }

div.span-4 select { width: 130px; }

div.span-5 select { width: 170px; }



div.span-1  textarea { width:  30px; height:  25px; }

div.span-2  textarea { width:  50px; height:  50px; }

div.span-3  textarea { width:  90px; height:  75px; }

div.span-4  textarea { width: 130px; height: 100px; }

div.span-5  textarea { width: 170px; height: 125px; }

div.span-6  textarea { width: 210px; height: 150px; }

div.span-7  textarea { width: 250px; height: 175px; }

div.span-8  textarea { width: 290px; height: 200px; }

div.span-9  textarea { width: 330px; height: 225px; }

div.span-10 textarea { width: 370px; height: 250px; }

Use rails date_select without activerecord model

davenolan (davenolan) — Wed, 10 Oct 2007 12:42:58 GMT

// In your view:



<%= date_select('range', 'start_date', :order => [:month, :day, :year])%>

// In your controller:



@start_date = Date.civil(params[:range][:"start_date(1i)"].to_i,params[:range][:"start_date(2i)"].to_i,params[:range][:"start_date(3i)"].to_i)

Credit: http://www.jonsthoughtsoneverything.com/2006/05/21/how-to-access-date_select-without-an-active-record-model/

text input /w background image

thescriptkeeper (mona) — Wed, 22 Aug 2007 14:43:56 GMT

// self-explanatory. see title.

Using a mutiple collection select form helper with habtm or has many associations in Rails

davenolan (davenolan) — Mon, 30 Jul 2007 08:58:54 GMT

// where user has and belongs to many roles



# in your view

<%= collection_select :user, :role_ids, Role.find(:all, :order => 'name ASC'), :id, :name, { :selected => @user.role_ids }, { :multiple => true, :name => 'user[role_ids][]' } -%>

Fix for camping multipart parsing issue.

NetherBen (Ben) — Thu, 26 Jul 2007 01:53:58 GMT

// description of your code here
I wrote a nice description of this issue, but snippets ate it.

In short, this parses complicated form names into nice hashes, i.e. name[asd][asd] for multipart forms.



module Camping

module Base

 def initialize(r, e, m) #:nodoc:

      e = H[e.to_hash]

      @status, @method, @env, @headers, @root = 200, m.downcase, e,

          {'Content-Type'=>'text/html'}, e.SCRIPT_NAME.sub(/\/$/,'')

      @k = C.kp(e.HTTP_COOKIE)

      qs = C.qs_parse(e.QUERY_STRING)

      @in = r

      todo = []

      if %r|\Amultipart/form-data.*boundary=\"?([^\";,]+)|n.match(e.CONTENT_TYPE)

        b = /(?:\r?\n|\A)#{Regexp::quote("--#$1")}(?:--)?\r$/

        until @in.eof?

          fh=H[]

          for l in @in

            case l

            when Z: break

            when /^Content-Disposition: form-data;/

              fh.u H[*$'.scan(/(?:\s(\w+)="([^"]+)")/).flatten]

            when /^Content-Type: (.+?)(\r$|\Z)/m

              puts "=> fh[type] = #$1"

              fh[:type] = $1

            end

          end

          fn=fh[:name]

          o=if fh[:filename]

            o=fh[:tempfile]=Tempfile.new(:C)

            o.binmode

          else

            fh=""

          end

          while l=@in.read(16384)

            if l=~b

              o<<$`.chomp

              @in.seek(-$'.size,IO::SEEK_CUR)

              break

            end

            o<< l

          end

          if(fn)

            qs.merge!(C.qs_parse(fn + "=1"))

            parts = fn.split(/\[/)

            line = ""

            parts.each do |pp|

              pp = pp.gsub(/\]/,"")

              line += "['#{pp}']"

            end

            #p "line is:"

            #p line

            #p fh

            todo << ["qs#{line}", fh]

            #eval("qs#{line} = fh")

            #p qs

          end

          fh[:tempfile].rewind if fh.is_a?H

        end

      elsif @method == "post"

        qs.merge!(C.qs_parse(@in.read))

      end

      #post process vars

      todo.each do |n|

        eval("#{n.first} = n.last")

      end

      #p "END QUERY"

      #p qs

      #exit

      @cookies, @input = @k.dup, qs.dup

    end





end 

end

// insert code here..