Srikanth Jeeva's technical Blog

Hi. calendar_date_select plugin uses the following tag, <%= calendar_date_select_tag "start_date", Time.now, :size => 15 %> The above tag gives a text box and an Image. Which i really don't need. I have called the onclick function which was written in the image onclick with text box as follows, <input type="text" name="start_date" onclick="new CalendarDateSelect( this, {year_range:10} );" /> Date Select work fine now with image.

I have got error like this in attachment fu while uploading image and creating thumbnail, NoMethodError (undefined method `output' for #<MiniMagick::CommandBuilder:0xb14dde4>): I changed my Minimagick gem version to 1.2.5 and things worked fine..

I have spent lot of time in making this. The problem was there was conflict in the prototype & Jquery. This is how i did it, Step 1: Download jquery.ui.datepicker.js from jquery UI and add it in Javascripts folder. Step 2 : Add these in Layout, <script src="/javascripts/jquery.js" type="text/javascript"></script> <script src="/javascripts/jquery.ui.datepicker.js"></script> <script> jQuery(function() { jQuery("#datepicker").datepicker(); }); </script> Note: instead of $(function) i have used jQuery(function) Step 3 : Then the View file, use, <%= text_field_tag "datepicker" %> Note : If you get this error, "jquery ui $(input).zIndex is not a function" 1. Go to the datepicker JS & comment out the line where you get the error. 2. Add .ui-datepicker {z-index: 3000;} in ur stylesheet

Jquery UI themeroller gives various themes and also we can customize and download. http://jqueryui.com/themeroller/ It also gives various options like Datepicker, Accordian, Autocomplete etc. Just select your theme, customize if you want & click Download Theme. Things will be in your hand.

I have gone through many articles on how to use Ajax pagination with will_paginate. Here is how i did & it worked for me, Step 1 : Create a helper called remote_link_renderer.rb and use the following code, class RemoteLinkRenderer < WillPaginate::LinkRenderer def prepare(collection, options, template) @remote = options.delete(:remote) || {} super end protected def page_link(page, text, attributes = {}) @template.link_to_remote(text, {:url => url_for(page), :method => :get}.merge(@remote), attributes) end end Step 2: Make the view file table in a partial(_units.html.erb), <div id="units"> <%= render :partial => "units" %> </div> Step 3 : And in the partial _units.html.erb add will paginate code, <%= will_paginate @units, :renderer => 'RemoteLinkRenderer' , :remote => { :update => 'units'} %> Step 4 : In the controller use: respond_to do |format| format.js { render :partial =...

Pagination using will paginate comes with div class "pagination" Copy & paste the below code in css file, to make the pagination look a better. .pagination { padding:0.3em; text-align:right; } .pagination a, .pagination span { padding:0.2em 0.5em; } .pagination span.disabled { color:#AAAAAA; } .pagination span.current { color:#8FBF5D; font-weight:bold; } .pagination a { border:1px solid #DDDDDD; color:#0063DC; text-decoration:none; } .pagination a:hover, .pagination a:focus { -moz-background-clip:border; -moz-background-inline-policy:continuous; -moz-background-origin:padding; background:#0063DC none repeat scroll 0 0; border-color:#003366; color:white; } .pagination .page_info { color:#AAAAAA; padding-top:0.8em; } .pagination .prev_page, .pagination .next_page { border-width:1px; }

Continuation for my previous post about Auto complete plugin I have used after_update_element to send the value that is selected in the Auto complete <%= text_field_with_auto_complete 'phonenumber', 'to',{:size=>25, :class=> "text ui-widget-content ui-corner-all", :value=>@service_order.phonenumber}, {:skip_style => false, :after_update_element=> "function(element,value){new Ajax.Request('/controller/action', {asynchronous:true, evalScripts:true, method:'get', parameters:'number=' + $('phonenumber_to').value }); return false; }"} %>

Found an Awesome plugin https://github.com/rails/auto_complete for doing this and i made it in 5-10 mins. Install plugin : ruby script/plugin install git://github.com/rails/auto_complete.git Use in HTML for Text field: <%= text_field_with_auto_complete 'phonenumber', 'to',{}, :skip_style => false %> Controller : skip_before_filter :verify_authenticity_token, :only => [:auto_complete_for_phonenumber_to] def auto_complete_for_phonenumber_to phonenumber = params[:phonenumber][:to] @phones = CustomerPhone.phonenumber_search(phonenumber) render :partial => 'phonenumbers' end Search Query in model: def self.phonenumber_search(keyword) find(:all, :conditions=>["phonenumber like ?", "%#{keyword}%"]) end View : Create Partial : "_phone_number.html.erb" <%= auto_complete_result @phones, :phonenumber %> Restart your Server & Search. It works. Note : If you get undefined method...

For Truncating String I have used 'truncate' rails helper method. limiting to 10 characters truncate("im srikanth glad to meet you", 10) >> "im srik..." For HTML stripping, I have used gsub.. str.gsub(/ ]*>/, "")

You can Use this , def weekday? (1..5).include?(wday) end check .. d = Date.today => Mon, 04 Oct 2010 d.weekday? => true d = Date.today - 1 => Sun, 03 Oct 2010 d.weekday? => false

you can use this, ActiveRecord::Base.connection.select_value("sql query")

Hi when i tried to install pauldix-feedzirra, i got the below error. sudo gem install pauldix-feedzirra Building native extensions. This could take a while... ERROR: Error installing pauldix-feedzirra: ERROR: Failed to build gem native extension. /usr/local/bin/ruby extconf.rb checking for libxml/parser.h... yes checking for libxslt/xslt.h... no ----- libxslt is missing. please visit http://nokogiri.org/tutorials/installing_nokogiri.html for help with installing dependencies. ----- *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. Provided configuration options: --with-opt-dir --without-opt-dir --with-opt-include --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=/usr/local/bin/ruby --with-zlib-dir --without-zlib-dir...

Just install the below lib files, sudo apt-get install libcurl3 libcurl3-gnutls libcurl4-openssl-dev & then, sudo gem install curb It works! -- source - http://axonflux.com/curb-install-problems-on-ubunt

Hi pals, If all the mails that you send are in HTML format. its simple. Specify this line in environment.rb ActionMailer::Base.default_content_type = "text/html" If only one action has to be in HTML mail, specify 'content_type' in that action. content_type "text/html" example, def signup_notification(recipient) recipients recipient.email_address_with_name subject "New account information" from "system@example.com" content_type "text/html" end cheers, Sri

Hi, used this to send the ID in params & display name in the select box. select_tag "user", options_from_collection_for_select(User.all, :id, :name) For adding option & showing selected params, select_tag "user_id", "<option>select one</option>" + options_from_collection_for_select(User.all, :id, :name, params[:user_id].to_i) -- sri.

Hi, I used image_submit_tag to submit my form. worked fine.. but the image is displayed with border. I used border => 0 but no use. This is was code. <%= image_submit_tag "../images/upload.png", :border => 0 %> & This worked <%= image_submit_tag "../images/upload.png", :style => "border: none;" %> - Sri

Hi, I have got this page "You are being redirected", whenever i used redirect. I found out that I have written methods such as redirect_XXX, redirect_yyy. I have changed the method names & it works !! Not using the rails keywords as method names, stops this bug.. Thanks, Srikanth

1. Remember me When the user login and checks the “Remember me” checkbox, the :save_login parameter is set, the User instance remember_me method invoked and the :auth_token cookie set... class AccountController def login case @request.method when :post if @session[:user] = User.authenticate(@params[:user_login], @params[:user_password]) flash['notice'] = "Login successful" if @params[:save_login] == "1" @session[:user].remember_me cookies[:auth_token] = { :value => @session[:user].remember_token , :expires => @session[:user].remember_token_expires } end redirect_back_or_default :controller => "time" else flash.now['notice'] = "Login unsuccessful" @login = @params[:user_login] end end end def logout @session[:user].forget_me if @session[:user] @session[:user] = nil cookies.delete :auth_token end end 2. ...

<h1>Defaults</h1> <fb:like></fb:like> <h1>Explicit href</h1> <fb:like href="http://fbrell.com"></fb:like> <h1>Custom Font</h1> <fb:like font="trebuchet ms" href="http://fbrell.com"></fb:like> <h1>Disable Faces</h1> <fb:like show_faces="no" href="http://fbrell.com"></fb:like> <h1>Button Count</h1> <fb:like layout="button_count" href="http://fbrell.com"></fb:like> <h1>Narrow</h1> <fb:like width="200" href="http://fbrell.com"></fb:like> <h1>Narrow no faces</h1> <fb:like width="200" show_faces="no" href="http://fbrell.com"></fb:like> <h1>Recommend</h1> <fb:like href="http://fbrell.com"></fb:like> <h1>Dark</h1> <div style="background-color: black; padding...

Wanna Use 1 image with 2 links?? <img src="/images/submit.png" width="219" height="59" border="0" usemap="#Map" /> <map name="Map" id="Map"> <area shape="rect" coords="17,15,218,44" href="http://www.google.com" /> <area shape="rect" coords="8,46,219,59" href="http://yahoo.com /> </map>

Spent an hour to find out how to send a https post request and this is how .. require 'rubygems' require 'net/http' require 'net/https' require 'uri' http = Net::HTTP.new('facebook.com', 443) http.use_ssl = true path = "/oauth/access_token" data = 'id=123456' resp, data = http.post(path, data) puts resp.inspect puts data.inspect

Hi, Today I ve learnt how to make ll working in linux from my friend swanand. do the following, gedit ~/.bashrc alias ll='ls -l' save the file & close it. This makes ll working in all new tabs in console. Cheers,

Here by i have checked routes for domain_name with alpha-numeric. map.home '/homes/:domain_name/:id',:controller=>'home', :action=>'new', :requirements => { :domain_name => /[A-Za-z0-9.]+/}

Hi Just for syntax, used this for sending ajax request.. new Ajax.Request('/controller/action', {asynchronous:true, evalScripts:true, method:'get', parameters:'params1=' + param + '&param2=' + param + '&param3=' + param }); return false; Thanks, Sri

Hi Just for syntax, used this for sending ajax request.. new Ajax.Request('/controller/action', {asynchronous:true, evalScripts:true, method:'get', parameters:'params1=' + param + '&param2=' + param + '&param3=' + param }); return false; Thanks, Sri

To Find Number of mp3 files in a directory, I got this, ls | grep .*.mp3 | wc -l Thanks, Srikanth

Hi, This is a Great plugin in Rails for the search options. This comes with many inbuilt functionalities. There are many tutorials & Videos on how to work this. But I struggled a lot in Installation. 1. I have installed the Thinking sphinx Plugin, But there was error srikanth@client30:~/project$ rake thinking_sphinx:index Sphinx cannot be found on your system. You may need to configure the following settings in your config/sphinx.yml file: * bin_path * searchd_binary_name * indexer_binary_name For more information, read the documentation: http://freelancing-god.github. com/ts/en/advanced_config.html Generating Configuration to /home/srikanth/projects/ thisproject/config/ development.sphinx.conf Solution : You will have to download and install the sphinx software. Thinking sphinx is only a wrapper around sphinx. You can get sphinx at http://sphinxsearch.com/ 2) After I Install sphinx, when I start it srikanth@client30:~/projects/ my project$ rake thinking_sphinx:start (in /home/srik...

My Friend Ukesh gave me this code, thanks to him for saving my time. <input name="q" id="search_text" type="text" value="- Search -" onfocus="clearDefaultText(this)" onblur="clearDefaultText(this)" style="background:none"/> <script> function clearDefaultText(field){ if (field.defaultValue == field.value) field.value = ''; else if (field.value == '') field.value = field.defaultValue; } </script>

<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0" width="100" height="90"> <param name="movie" value="/videos/TGP.swf" /> <param name="quality" value="high" /> <embed src="/videos/TGP1.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="293" height="275"></embed> </object>

Me @ Ruby conf, Bangalore. - 20-3-2010 Seasons Hall, Royal orchid. The great man sitting is ola bini priya, me, veera, shiv, uthiravel 21-3-2010 updating blog & twitting my Boss Senthil, Uthiravel, me Very Excited meeting Obie Fernandez. wht a man!!! wht a programmer!!

Hi, Wanna get file extension filename.scan(/\.\w+$/)

Hi, previously my code was like this, I tried much using, html_options, options, but class is not applied for select. <%= f.select 'difficulty', options_for_select({ "Easy" => "1", "Medium" => "3", "Hard" => "5"}, get_difficulty(@tour).to_s), :class =>'input_text' %> Right way to do: <%= select :tour, :difficulty, { "Easy" => "1", "Medium" => "3", "Hard" => "5"}, {:selected=>get_difficulty(@tour).to_s}, :class=>"input_text" %> Now class is applied!!! Any other better way pls tel me,,.</span>

Getting a DB dump in local machine from server.. Step1: Login into the server where mysql is hosted - ssh username@server Step 2: Take MySQL Dump mysqldump dbname -u dbusername -p > filename.sql Step 3: Logout Logout of server Step 4: from Local machine scp username@server:server_path/filename.sql dumpfile.sql The above steps can be done in 1 step. mysqldump -h hostname -u dbusername -p dbname > filename.sql

Problem Trying to update (pull) in git causes the error ‘you’re in the middle of a conflicted merge’. How to resolve a Git Conflict?  Solution NOTE: Take a backup of your code before you do this. This will remove all your changes and revert to master branch!! To be able to get out of this error try the followng: git reset --hard HEAD git fetch origin git reset --hard origin to reset the state, and then you should be able to use git pull as normal. This site helped me when i faced this problem - http://www.42.mach7x.com/2009/11/24/youre-in-the-middle-of-a-conflicted-merge-git/

Hi, I have used this method to generate random texts .... def rendom_password chars = ("a".."z").to_a + ("A".."Z").to_a + ("0".."9").to_a newpass = "" 1.upto(7) { |i| newpass end Thanks, sri

Hi, Whenever i use a select Box in Rails, i have used this link.. This s really useful.. http://shiningthrough.co.uk/Select-helper-methods-in-Ruby-on-Rails Thanks, Srikanth Tutorials: Ruby on Rails 3 Tutorial: Learn Rails by Example | Ajax on Rails | Rails 3 Way, The (2nd Edition) (Addison-Wesley Professional Ruby Series)