Module: Truncates

Defined in:
lib/truncates.rb,
lib/truncates/version.rb

Constant Summary collapse

DEFAULT_MAX_LENGTH = 
255
DEFAULT_CHARACTER_TRAIL = 
""
DEFAULT_STAGE = 
:before_validation
VERSION = 
"0.0.2"

Instance Method Summary collapse

Instance Method Details

#truncates(field_name, options = {}) ⇒ Object 



8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
# File 'lib/truncates.rb', line 8

def truncates(field_name, options = {})
  raise("Hash expected, got #{options.class.name}") if !options.is_a?(Hash) && !options.empty?
  max_length = options[:max_length] || DEFAULT_MAX_LENGTH
  character_trail = options[:character_trail] || DEFAULT_CHARACTER_TRAIL    
  
  before_validation do       
    value = eval("self.#{field_name}")      
    
    if(value.present? && value.length > max_length)
      new_value = value.slice(0, max_length - character_trail.length) + character_trail        
      eval("self.#{field_name}=\"#{new_value}\"")
    end
  end
end