July 25, 2010
Posted by roadburn
Here’s a useful tip I found from http://ariejan.net/2007/03/27/rails-tip-snippet-create-a-comma-seperate-list/
To get ‘Tom, Dick, Harry’
1 | @users.collect{|u| u.name}.join(', ') |
To get ‘Tom, Dick and Harry’
1 | @users.collect(&:name).to_sentence |
July 23, 2010
Posted by roadburn
Another reason to love rails, it’s so easy!
Just install the acts_as_tree plugin
1 | $ script/plugin install git://github.com/rails/acts_as_tree.git |
and in your model, eg. app/models/category.rb, just add
1 | acts_as_tree :order => 'name' |
And here’s the plugin’s readme on how to use it
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | acts_as_tree ============ Specify this +acts_as+ extension if you want to model a tree structure by providing a parent association and a children association. This requires that you have a foreign key column, which by default is called +parent_id+. class Category < ActiveRecord::Base acts_as_tree :order => "name" end Example: root \_ child1 \_ subchild1 \_ subchild2 root = Category.create("name" => "root") child1 = root.children.create("name" => "child1") subchild1 = child1.children.create("name" => "subchild1") root.parent # => nil child1.parent # => root root.children # => [child1] root.children.first.children.first # => subchild1 |
Resources
Dan Weinand and Luke Francl have written a nice plugin which simplifies the task of retrieving emails. Kudos to them!
So basically what you need to do is install the plugin, create the Action Mailer receiver, and then use cron to schedule the script to run
Here are the steps:
First install the fetcher plugin from http://github.com/look/fetcher/ and SystemTimer gem it requires
$ script/plugin install git://github.com/look/fetcher.git $ sudo gem install SystemTimer
Create your ruby script eg. script/mail_fetcher
#!/usr/bin/env ruby require File.dirname(__FILE__) + '/../config/environment.rb' require 'system_timer' require 'yaml' require 'fetcher' begin puts "Start checking email" Lockfile.new('cron_mail_fetcher.lock', :retries => 0) do config = YAML.load_file("#{RAILS_ROOT}/config/mail.yml") config = config[RAILS_ENV].to_options fetcher = Fetcher.create({:receiver => EnquiryMailer}.merge(config)) fetcher.fetch end rescue Lockfile::MaxTriesLockError => e puts "Another fetcher is already running. Exiting." end
Create the config/mail.yml file
defaults: &defaults # Settings for gmail type: imap # pop OR imap server: imap.gmail.com # server hostname port: 993 # 993 for IMAPs ssl: true # Remove if not using SSL username: user@gmail.com # Username password: xxx # Password use_login: true # Required for GMAIL processed_folder: processed error_folder: error # settings for bluehost type: imap # pop OR imap server: boxXXX.bluehost.com # server hostname port: 993 # 993 for IMAPs ssl: true # Remove if not using SSL username: user@domain.com # Username password: xxx # Password use_login: true processed_folder: INBOX.processed error_folder: INBOX.error development: <<: *defaults # Override other values here test: <<: *defaults # Override other values here production: <<: *defaults # Override other values here
Create your Action Mailer
$ script/generate mailer EnquiryMailerAdd the receiver in app/models/enquiry_mailer.rb
class UserMailer < ActionMailer::Base def receive(email) # do whatever you want with the email here # you can use: # email.subject, email.from, email.body end end
Run the script
$ script/runner script/mail_fetcher
Then follow Ryan Bate’s screencast on how to use Cron in Ruby
Resources
July 22, 2010
Posted by roadburn
Was inspired to cook today :)
Found out how to make the sweet japanese style omelette, it was surprisingly easy!
Ingredients:
Steps:
July 21, 2010
Posted by roadburn
Just recently launched a WordPress website for a very talented Singaporean bassist and composer, Wendy Phua.
Check out her site at www.wendyphua.com!
I was getting this error when trying to create a mailbox using create(mailbox) from Net::IMAP
1 | /opt/local/lib/ruby/1.8/net/imap.rb:981:in `pick_up_tagged_response': Unknown namespace. (Net::IMAP::NoResponseError) |
Realised that the processed and error mailboxes names had to be appended to “INBOX.”
1 2 3 4 5 6 7 8 9 | type: imap server: boxXXX.bluehost.com port: 993 ssl: true username: username@domain.com password: xxx use_login: true processed_folder: INBOX.processed error_folder: INBOX.error |