Conditional search in Ruby On Rails

By - 


For Conditional search in ror

I have the following model:

  create_table "users", :force => true do |t|
    t.string   "name"
    t.string   "url"
    t.integer  "clicks_given"
    t.integer  "clicks_received"
    t.datetime "created_at"
    t.datetime "updated_at"
  end

and I have defined this method for the model:

  def credits
    credits = self.clicks_given - self.clicks_received
  end

Pass the condition as an array instead of a hash:



@users = User.find(:all, :conditions => [ "clicks_given - clicks_received >= ?", -5 ])


Comments

Post a Comment

Popular posts from this blog

Rails Memcache issues

By -
Error :- down_retry_delay not reached for localhost:11211 (0.001 seconds left) down_retry_delay not reached for localhost:11211 (0.001 seconds left) down_retry_delay not reached for localhost:11211 (0.001 seconds left) down_retry_delay not reached for localhost:11211 (0.001 seconds left) [2012-03-20 15:08:28] ERROR NoMethodError: You have a nil object when you didn't expect it! You might have expected an instance of Array. The error occurred while evaluating nil.each     /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.3.6/lib/rack/handler/webrick.rb:71:in `service'     /usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service'     /usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run'     /usr/local/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread' cache: [GET /assets/kanga_custom/search_merchant.js?body=1] miss, ...
Read more

scp command usage guide

By -
Example syntax for Secure Copy ( scp ) What is Secure Copy? scp allows files to be copied to, from, or between different hosts. It uses ssh for data transfer and provides the same authentication and same level of security as ssh . Examples Copy the file "foobar.txt" from a remote host to the local host $ scp your_username@remotehost.edu:foobar.txt /some/local/directory Copy the file "foobar.txt" from the local host to a remote host $ scp foobar.txt your_username@remotehost.edu:/some/remote/directory Copy the directory "foo" from the local host to a remote host's directory "bar" $ scp -r foo your_username@remotehost.edu:/some/remote/directory/bar ...
Read more

ROR HEROKU Working with file storage like paperclip in heroku for free of cost ( paperclip and dropbox) paperclip-dropbox config | ROR, HEROKU, file storage, paperclip, in heroku, free of cost, paperclip, dropbox, paperclip-dropbox config

By -
In my project i am using paper-clip and deployed to heroku, heroku not allows the file storage but to use aws normally, i don’t want to spend money so i can use drop box storage which will gives 2gb free storage space. So i am using paper-clip with drop box with library papercklip-dropbox gem, steps to follow are given below. Include  gem “paperclip-dropbox” in your gem file Run the command  $bundel install  Create  drop box api app  in  https://www.dropbox.com/developers/apps    and give read write permissions it gives you the  App key  and  App secret   which will used in further configeration Generate the other required details using available details, run the rake task to generate other details “ $ rake dropbox:authorize APP_KEY=your_app_key APP_SECRET=your_app_secret ACCESS_TYPE=your_access_typ  “, this command will generate the  access_token, access_token_secret, user_id Create  dropbox_conf...
Read more