Activetuts

Its very simple to load the table value to dropdown box in ruby on rails.        Syntax :                  select(:model, :attribute, rails query) Example :       Now you need to load the countries table table to drop down mean                         select(:Country, :cname, Country.all.collect {|c| [ c.name, c.id ] })     Country => Its model name     cname  => Field name     Country.all  => Its load the all values to dropdown.     Its like "SELECT *FROM COUNTRIES"

I’m going to show you a very simple way to upload your attachments or a picture using CarrierWave gem. Steps: 1.    Open Terminal. 2.   Create a new project terminal > rails new imageupload 3.   Add this line to Gemfile     gem ‘ carrierwave ‘ 4.   terminal > bundle install 5.   terminal > rails g uploader image 6.   terminal > rails g scaffold Painting name:string image:string 7.   terminal > rake db:migrate 8.   Add this line to painting.rb (app/models/painting.rb)     class Painting < ActiveRecord::Base      mount_uploader :image, ImageUploader     end 9.   And then in your app/views/paintings/_form.html.erb edit your code, which become     <%= f.label :image %>     <%= f. text_field :image %>   ...