Posts tagged as:

number helper

Format phone number in Rails

February 22, 2008

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Recently, I have needed to take a number string and format it to a phone number. This was a PITA in PHP, fortunately, Rails includes some methods that will make the formatting of phone numbers much easier.

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# number_to_phone(number, options = {})
# Formats a number into a US phone number (e.g., (555) 123-9876). 
# You can customize the format in the options hash.
# 
# Options
#
# :area_code - Adds parentheses around the area code.
# :delimiter - Specifies the delimiter to use (defaults to "-").
# :extension - Specifies an extension to add to the end of the generated number.
# :country_code - Sets the country code for the phone number.
 
# returns => 123-555-1234
number_to_phone(1235551234)
 
# returns => (123) 555-1234
number_to_phone(1235551234, :area_code => true) 
 
# returns => 123 555 1234
number_to_phone(1235551234, :delimiter => " ")
 
# returns => (123) 555-1234 x 555
number_to_phone(1235551234, :area_code => true, :extension => 555) 
 
# returns => +1-123-555-1234
number_to_phone(1235551234, :country_code => 1)     
 
# returns => +1.123.555.1234 x 1343
number_to_phone(1235551234, :country_code => 1, :extension => 1343, :delimiter => ".")

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Rails number to percentage helper

February 21, 2008

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In the next few days I’m going to quickly touch on a few of Rail’s number helper methods. Lately I’ve been doing a lot of mathematical calculations that require percentages, the number_to_percentage method is quite handy.

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# number_to_percentage(number, options = {})
#  Formats a number as a percentage string (e.g., 65%). You can customize the format in the options hash.
# Options
#  :precision - Sets the level of precision (defaults to 3).
#  :separator - Sets the separator between the units (defaults to ".").
# Examples
 
# returns 100.000%
number_to_percentage(100)                         
 
# returns 100%
number_to_percentage(100, :precision => 0)        
 
# returns 302.24399%
number_to_percentage(302.24398923423, :precision => 5)

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