To access a value in a model before it is type cast, append _before_type_cast.
self.phone_number_before_type_cast
A possible use of this is to remove characters from a string before it is cast to an integer (in a before_save method, for example):
def before_save
self['phone_number'] = phone_number_before_type_cast.gsub(/[^0-9]/,'')
end
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
If you’ve included fixtures in your unit test:
class UserTest
... the data will be available using:
users(:johnny)
A fixtures object behaves like a hash but is actually a method. It is a “hash with special powers”. To get Johnny’s surname you would do:
users(:johnny).surname
The YAML fixture might look something like this:
johnny:
id: 2
first_name: Johnny
surname: Smith
email_address: jsmith@jsmith.cc
Rails migrations do not seem to support decimal or float columns with a set precision and scale at the moment, e.g. float(8,2).
The accepted solution seems to be to store prices in pence (or cents) and then convert to a decimal price in pounds (or dollars) in the model. See How To Use Integer Fields As Money on the Rails wiki.
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
See who has been trying to login using SSH:
cat /var/log/secure*|grep smtp|awk -F: '{print $5}'|sed 's/^.*from=//; s/\.[0-9]\{1,3\}$//;'|sort|uniq -c|sed 's/^ *//;'|sort -gnr|more
This will not work:
{$smarty.server.script_name}
But this will:
{$smarty.server.SCRIPT_NAME}
Make sure you use upper case for the name of the server variable.
The SQL parser in PHPMyAdmin 2.6.x (the version used in Plesk 7.5) falls over when confronted with an ISNULL query, for example:
SELECT ISNULL(id) FROM user
The bug is fixed in recent versions of PMA (2.9.x works fine).
