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  • ∞ AppConfig 
    # For a application config (config/application.yml)
# Request: AppConfig.variable_name
#
#-> config/initializers/AppConfig.rb
module ApplicationConfiguration
  require 'ostruct'
  require 'yaml'  
  if File.exists?( File.join(RAILS_ROOT, 'config', 'application.yml') )
    file = File.join(RAILS_ROOT, 'config', 'application.yml')
    users_app_config = YAML.load_file file
  end
  default_app_config = YAML.load_file(File.join(RAILS_ROOT, 'config', 'application.yml'))
  
  config_hash = (users_app_config||{}).reverse_merge!(default_app_config)

  unless defined?(AppConfig)
    ::AppConfig = OpenStruct.new config_hash
  else
    orig_hash   = AppConfig.marshal_dump
    merged_hash = config_hash.merge(orig_hash)
    
    AppConfig = OpenStruct.new merged_hash
  end
end

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    0 comments - tagged in  posted by cbeier on Mar 08, 2010 at 7:00 a.m. EST
  • ∞ Installing mysql gem on snow leopard 
    $ sudo env ARCHFLAGS="-arch x86_64" gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config
$ sudo port install mysql5-devel
$ sudo /opt/local/lib/mysql5/mysql_install_db -user=mysql
$ sudo env ARCHFLAGS="-arch x86_64" gem install mysql -- --with-mysql-config=/opt/local/bin/mysql_config5

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    0 comments - tagged in  posted by LupineDev on Mar 04, 2010 at 5:23 p.m. EST
  • ∞ To display error messages on localhost 
    # To display error messages on localhost
# -> application_controller.rb
def local_request?
  false
end

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    0 comments - tagged in  posted by cbeier on Mar 01, 2010 at 10:04 a.m. EST
  • ∞ Ruby controller to supply data to Flot JS 
     def graph
    #Get last 8 weights, but after we build the Array for the JS Graph we need to reverse
    #the array so that it ends up chronologically.
    #Also counting down from the size of the weight list, b/c the graphing tool doesn't seem to
    # be tricked so easily
    @user = params[:id].blank? ? @current_user : User.find(params[:id])

    @weight = Weight.find(:all, :conditions=>["user_id = ?", @user.id], :limit=>8 , :order=>'created_at DESC')
    @DataSet = Array.new
    @Ticks = Array.new
    counter = @weight.size
    for weight in @weight
      #counter = weight.created_at.strftime("%Y%m%d")
      counter = weight.created_at.to_i * 1000
     @DataSet.push([counter,weight.weight])
     @Ticks.push([counter,weight.created_at.strftime("%Y-%m-%d")])
    end
    @DataSet.reverse!
    @Ticks.reverse!

    #Determine BMI ranges
    @bmi_ranges = {}
    @bmi_ranges["underweight"] = "from: 0, to:#{sprintf("%.2f",(18.5 * (@user.height_in_inches **2).to_f)/703) }"
    @bmi_ranges["normal"] = "from: #{sprintf("%.2f",(18.6 * (@user.height_in_inches **2).to_f)/703)}, to:#{sprintf("%.2f",(24.9 * (@user.height_in_inches **2).to_f)/703) }"
    @bmi_ranges["overweight"] = "from: #{sprintf("%.2f",(25 * (@user.height_in_inches **2).to_f)/703)}, to:#{sprintf("%.2f",(29.9 * (@user.height_in_inches **2).to_f)/703) }"
      @bmi_ranges["obese"] = "from: #{sprintf("%.2f",(30 * (@user.height_in_inches **2).to_f)/703)}, to: 2000"


    respond_to do |format|
      format.js
    end
  end

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    0 comments - tagged in  posted by lear64 on Feb 23, 2010 at 11:07 a.m. EST
  • ∞ date datetime picker jQuery UI for Rails 
    $(document).ready(function() {
    // Define the dateFormat for the datepicker
    $.datepicker._defaults.dateFormat = 'dd M yy';

    /**
     * Sets the date for each select with the date selected with datepicker
     */
    $('input.ui-date-text').live("change", function() {
        var sels = $(this).siblings("select:lt(3)");
        var d = $.datepicker.parseDate($.datepicker._defaults.dateFormat, $(this).val() );
        
        $(sels[0]).val(d.getFullYear());
        $(sels[1]).val(d.getMonth() + 1);
        $(sels[2]).val(d.getDate());
    });
    
    /**
     * Replaces the date or datetime field with jquey-ui datepicker
     */
    $('.date, .datetime').each(function(i, el) {
        var input = document.createElement('input');
        $(input).attr({'type': 'text', 'class': 'ui-date-text'});
        // Insert the input:text before the first select
        $(el).find("select:first").before(input);
        $(el).find("select:lt(3)").hide();
        // Set the input with the value of the selects
        var values = [];
        $(input).siblings("select:lt(3)").each(function(i, el) {
            var val = $(el).val();
            if(val != '')
                values.push(val);
        });
        if( values.length > 1) {
            d = new Date(values[0], parseInt(values[1]) - 1, values[2]);
            $(input).val( $.datepicker.formatDate($.datepicker._defaults.dateFormat, d) );
        }

        $(input).datepicker();
    });
});

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    0 comments - tagged in  posted by boriscy on Nov 30, 2009 at 2:09 p.m. EST
  • ∞ Formtastic datetime 
    class MyCustomFormBuilder < ::Formtastic::SemanticFormBuilder
  def date_or_datetime_input(method, options)
     position = { :year => 1, :month => 2, :day => 3, :hour => 4, :minute => 5, :second => 6 }
     i18n_date_order = ::I18n.t(:order, :scope => [:date])
     i18n_date_order = nil unless i18n_date_order.is_a?(Array)
     inputs = options.delete(:order) || i18n_date_order || [:year, :month, :day]
 
     time_inputs = [:hour, :minute]
     time_inputs << [:second] if options[:include_seconds]
 
     list_items_capture = ""
     hidden_fields_capture = ""
 
     # Gets the datetime object. It can be a Fixnum, Date or Time, or nil.
     datetime = @object ? @object.send(method) : nil
     html_options = options.delete(:input_html) || {}
     input_ids = []
 
      (inputs + time_inputs).each do |input|
        input_ids << input_id = generate_html_id(method, "#{position[input]}i")
        
        field_name = "#{method}(#{position[input]}i)"
        if options[:"discard_#{input}"]
          break if time_inputs.include?(input)
          
          hidden_value = datetime.respond_to?(input) ? datetime.send(input.to_sym) : datetime
          hidden_fields_capture << template.hidden_field_tag("#{@object_name}[#{field_name}]", (hidden_value || 1), :id => input_id)
        else
          begin
            # version 0.9.7 and up
            opts = strip_formtastic_options(options).merge(:prefix => @object_name, :field_name => field_name, :default => datetime)
          rescue
            # version 0.9.1
            opts = set_options(options).merge(:prefix => @object_name, :field_name => field_name)
          end
          item_label_text = ::I18n.t(input.to_s, :default => input.to_s.humanize, :scope => [:datetime, :prompts])
 
          list_items_capture << template.send(:"select_#{input}", datetime, opts, html_options.merge(:id => input_id))
        end
      end
 
      hidden_fields_capture << self.label(method, options_for_label(options)) << list_items_capture
    end
end

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    0 comments - tagged in  posted by boriscy on Nov 30, 2009 at 12:07 p.m. EST
  • ∞ Rails 3 app from edge 
    # From pastie http://pastie.org/684600 by José Valim

# First, clone Rails master
git clone git://github.com/rails/rails
cd rails

# Bundle Rails master dependencies
gem install bundler
gem bundle

# Generate a fresh developer app in a folder named rails inside your rails checkout:
cd railties
rake dev

# Configure the new fresh repo to use rails edge by changing config/boot.rb to:
environment = File.expand_path('../../../vendor/gems/environment', __FILE__)
require environment
require 'rails'

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    0 comments - tagged in  posted by kevinvaldek on Nov 05, 2009 at 10:35 a.m. EST
  • ∞ Rails: Helper method for adding word breaks to pesky long URLs 
    module ApplicationHelper
  # Word Break Helper: great for things like those pesky long URLs
  def wbr(str)
    str.split('').join('&#8203;')
  end  
end

# Use:
<%= wbr 'http://AReallyLongAndPeskyUrlThatGoesOnAndOn.com/how-about-some-more-url/yes-please/thank-you' %>

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    0 comments - tagged in  posted by chrisyour on Sep 29, 2009 at 10:10 p.m. EDT
  • ∞ Rails: Use default_scope to set up default find conditions such as order 
    class MyModel < ActiveRecord::Base
  default_scope :order => 'created_at desc'
end

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    0 comments - tagged in  posted by chrisyour on Sep 29, 2009 at 10:01 p.m. EDT
  • ∞ in console displays activerecord's sql operations 
    ActiveRecord::Base.logger = Logger.new(STDOUT)

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    0 comments - tagged in  posted by xasedy on Aug 18, 2009 at 8:38 a.m. EDT
  • ∞ Hash to Class (javascript-like!) 
    # Converts a hash to an instance of a class
# From http://pullmonkey.com/2008/1/6/convert-a-ruby-hash-into-a-class-object
class Hashit
  def initialize(hash)
    hash.each do |k,v|
      self.instance_variable_set("@#{k}", v)  ## create and initialize an instance variable for this key/value pair
      self.class.send(:define_method, k, proc{self.instance_variable_get("@#{k}")})  ## create the getter that returns the instance variable
      self.class.send(:define_method, "#{k}=", proc{|v| self.instance_variable_set("@#{k}", v)})  ## create the setter that sets the instance variable
    end
  end
end

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    0 comments - tagged in  posted by njoubert on Aug 16, 2009 at 10:39 p.m. EDT
  • ∞ raise error for debugging 
    raise params.inspect

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    0 comments - tagged in  posted by silentwarrior on Aug 12, 2009 at 8:59 p.m. EDT
  • ∞ Run DB Migrate on production 
    rake db:migrate RAILS_ENV=production

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    0 comments - tagged in  posted by ludicco on Jul 15, 2009 at 6:23 a.m. EDT
  • ∞ Rails SVN:Ignore DB setup (destructive to the DB!) 
    svn remove db/*.sqlite3
svn commit -m 'removing all tmp artifacts from subversion'
svn propset svn:ignore "*.sqlite3" db/
svn update db/
svn commit -m "ignore db/*.sqlite3 content from now on"

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    0 comments - tagged in  posted by njoubert on Jul 02, 2009 at 9:54 p.m. EDT
  • ∞ Rails SVN:Ignore setup (nondestructive) 
    svn remove log/*
svn commit -m 'removing all log files from subversion'
svn propset svn:ignore "*.log" log/
svn update log/
svn commit -m 'Ignoring all files in /log/ ending in .log'

svn remove tmp/*
svn commit -m 'removing all tmp artifacts from subversion'
svn propset svn:ignore "*" tmp/
svn update tmp/
svn commit -m "ignore tmp/ content from now on"

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    0 comments - tagged in  posted by njoubert on Jul 02, 2009 at 9:33 p.m. EDT
  • ∞ call protected with_exclusive_scope 
    Category.send(:with_exclusive_scope) { Category.find(:all) }

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    0 comments - tagged in  posted by b1uepill on Jun 29, 2009 at 1:03 a.m. EDT
  • ∞ install rails on ubuntu 
    #!/bin/bash

# Install Ruby packages
sudo aptitude install ruby rdoc irb ri rubygems libopenssl-ruby ruby-dev build-essential

# Add gem binaries to the bash PATH
echo "export PATH=/var/lib/gems/1.8/bin:\$PATH" | sudo tee -a /etc/bash.bashrc

# Install Rails
sudo gem install rails

# Install SQLite3 support (optional)
sudo aptitude install libsqlite3-0 libsqlite3-dev
sudo gem install sqlite3-ruby

# Install MySQL support (optional)
sudo aptitude install libmysql-ruby mysql-server mysql-client \
  mysql-client-dev mysql-query-browser
sudo gem install mysql

# Install Mongrel server (optional)
sudo gem install mongrel

# Enable IRB autocompletion
echo 'require "irb/completion"' >> $HOME/.irbrc

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    0 comments - tagged in  posted by danielrmt on May 30, 2009 at 5:19 p.m. EDT
  • ∞ create rails application with git repository 
    #!/bin/sh

# Create Rails application
rails $*
# Goto the application
cd $1

# Initialize git repository
git init
# Create ignore list
touch log/.gitignore
touch tmp/.gitignore
tee .gitignore <<END
log/*.log
tmp/**/*
db/*.sqlite3
doc/api
doc/app
END
# Create pre-commit hook
tee .git/hooks/pre-commit <<END
rm .git/hooks/*.sample
#!/bin/sh
rake test
END
chmod a+x .git/hooks/pre-commit
# Create empty database files
rake db:migrate
# Add dir to repository
git add .
# Commit it
git commit -m "Created empty Rails application"

# Install jRails plugin (replace Prototype for jQuery)
script/plugin install http://ennerchi.googlecode.com/svn/trunk/plugins/jrails
git add vendor public/javascripts/*.js
git rm public/javascripts/controls.js public/javascripts/dragdrop.js \
  public/javascripts/effects.js public/javascripts/prototype.js
git commit -a -m "Installed jRails plugin (replaced Prototype for jQuery)"

# Download Blueprint CSS framework
mkdir -p public/stylesheets/blueprint
for f in ie print screen; do
  wget http://github.com/joshuaclayton/blueprint-css.git/blueprint/$f.css \
    -O public/stylesheets/blueprint/$f.css
done
touch public/stylesheets/main.css
git add public/stylesheets
git commit -m "Installed blueprint CSS framework"

# Basic Blueprint layout
mkdir -p app/views/layouts
wget http://dl.getdropbox.com/u/550278/application.html.erb \
  -O app/views/layouts/application.html.erb
echo "<h3>Sidebar</h3>" | tee app/views/layouts/_sidebar.html.erb
git add app/views/layouts
git commit -m "Created basic layout"

# Create home controller
script/generate controller home index
git add app/controllers/home_controller.rb app/helpers/home_helper.rb \
  app/views/home test/functional/home_controller_test.rb test/unit/helpers
git rm public/index.html
tee config/routes.rb <<END
ActionController::Routing::Routes.draw do |map|
  map.root :controller => "home"
  map.connect ':controller/:action/:id'
  map.connect ':controller/:action/:id.:format'
end
END
git add config/routes.rb
git commit -m "Created Home controller"

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    1 comment - tagged in  posted by danielrmt on May 30, 2009 at 5:05 p.m. EDT
  • ∞ restart a Rails Web Application on DreamHost. 
    # restart a Rails Web Application on DreamHost. this requires that you've 
# enabled mod_rails (Passenger) support for the app in the DreamHost panel

$ touch /your_web_app_directory/tmp/restart.txt

# Passenger looks for a file tmp/restart.txt and if it exists, it reloads 
# your app, and refreshes all your files then deletes the tmp/restart.txt file

# The other way to force a restart is through the dreamhost panel:
# Domains > Manage Domains > Edit your-app.domain.com 
#  >> submit the form through the "fully host this application" button.

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    0 comments - tagged in  posted by jrguitar21 on May 15, 2009 at 11:20 a.m. EDT
  • ∞ Suppress missing images in development mode, place in .rb file in your initializers folder 
    # originally found at http://www.williambharding.com/blog/rails/rails-fix-slow-loads-in-development-when-images-missing/
if RAILS_ENV == 'development'
  module ActionView 
    module Helpers #:nodoc: 
      module AssetTagHelper
        def path_to_image(source)
          original_tag = ImageTag.new(self, @controller, source).public_path
          # Create the file below or simply point it to your own placeholder
          image_location = "/images/trash_can.gif"
          if(image_location && (image_location.index("http") || File.exists?(RAILS_ROOT +  "/public" + image_location.gsub(/\?.*/, ''))))
            image_location
          else
            default_image
          end
        end
      end
    end
  end
end

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    0 comments - tagged in  posted by benr75 on Apr 29, 2009 at 4:57 p.m. EDT
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