Module: Utils::Hash

Defined in:
lib/utils/hash.rb

Instance Method Summary collapse

Instance Method Details

#content_if(key, string = default_value_for_key(key)) ⇒ Object 



20
21
22
 
# File 'lib/utils/hash.rb', line 20

def content_if(key, string = default_value_for_key(key))
  "#{string} #{value_for(key)}" if exists?(key)
end

#exists?(key) ⇒ Boolean

Returns:

  • (Boolean) 


28
29
30
31
32
33
34
 
# File 'lib/utils/hash.rb', line 28

def exists?(key)
  case value_for(key)
  when nil, '' then false
  else
    true     
  end
end

#included(parent) ⇒ Object 



4
5
6
 
# File 'lib/utils/hash.rb', line 4

def included(parent)
  parent.extend(self)
end

#key_if(key, string = default_value_for_key(key)) ⇒ Object 



24
25
26
 
# File 'lib/utils/hash.rb', line 24

def key_if(key, string = default_value_for_key(key))
  "#{string}" if exists?(key)
end

#use_hash(content) ⇒ Object 



16
17
18
 
# File 'lib/utils/hash.rb', line 16

def use_hash(content)
  @__content = content  # use a double underscore to make sure it doesn't interfere 
end

#value_for(key) ⇒ Object 



36
37
38
39
40
41
 
# File 'lib/utils/hash.rb', line 36

def value_for(key)
  keys = key.split('.')
  keys.inject(@__content) do |location, key|
    location && location[key] ? location[key] : nil
  end
end

#with_hash(content) {|proc| ... } ⇒ Object

Yields:

  • (proc) 


9
10
11
12
13
14
 
# File 'lib/utils/hash.rb', line 9

def with_hash(content, &proc)
  old_content = @__content
  @__content = content      # use a double underscore to make sure it doesn't interfere 
  yield proc
  @__content = old_content
end