Rails integration test: setting the host
def test_something_else
sess = open_session
sess.host = "foo.bar.com"
end
def test_something_else
sess = open_session
sess.host = "foo.bar.com"
end
First make sure you have the MySQL client libraries installed, then:
sudo env ARCHFLAGS="-arch i386" gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config
Source: http://weblog.rubyonrails.com/2007/10/26/today-is-leopard-day
t = Time.at(1215163257)
puts t.to_date
>> 2008-07-04
numbers = %{
one
two
three
}
#!/usr/bin/env ruby
app_dir = '/srv/www'
apps = {
'ladybird' => 8001
}
if ['stop', 'restart'].include? ARGV.first
apps.each do |path, port|
path = File.join app_dir, path
puts "Stopping #{path}..."
`mongrel_rails stop -c #{path}/current -P log/mongrel.pid`
end
end
if ['start', 'restart'].include? ARGV.first
apps.each do |path, port|
path = File.join app_dir, path
puts "Starting #{path} on #{port}..."
`mongrel_rails start -d -p #{port} -e production -c #{path}/current -P log/mongrel.pid`
end
end
unless ['start', 'stop', 'restart'].include? ARGV.first
puts "Usage: mongrel {start|stop|restart}"
exit
end
Cleaner than checking if the value of fruit.id is nil:
fruit.new_record?
Use gsub.
>> str = "222, 000*"
=> "222, 000*"
>> str.gsub!(/[^0-9]/,'')
=> "222000"
Known as switch statements in PHP.
case @user.age
when 0 .. 2
"baby"
when 3 .. 6
"little child"
when 7 .. 12
"child"
when 12 .. 18
# Note: 12 already matched by "child"
"youth"
else
"adult"
end
The when and else keywords are not indented - they line up with the opening case.
Docs: http://www.ruby-doc.org/docs/ruby-doc-bundle/Manual/man-1.4/syntax.html#case
def random_password(size=8)
chars = (('a'..'z').to_a + ('0'..'9').to_a) - %w(i o 0 1 l 0)
(1..size).collect{|a| chars[rand(chars.size)] }.join
end
To get the substring of a string, you can use the array index operator:
@controller_name[0,5]
…or slice:
@controller_name.slice(0,5)
…where 0 is the index to start at, and 5 is the length of the substring to be extracted.
More info: http://www.rubycentral.com/ref/ref_c_string.html#_ob_cb
