Class: GoogleVisualr::Formatter

Inherits:
Object
  • Object
show all
Includes:
ParamHelpers
Defined in:
lib/google_visualr/formatters.rb

Overview

code.google.com/apis/chart/interactive/docs/reference.html#formatters

Instance Method Summary collapse

Methods included from ParamHelpers

#js_parameters, #stringify_keys!, #typecast

Constructor Details

#initialize(options = {}) ⇒ Formatter

Returns a new instance of Formatter.



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# File 'lib/google_visualr/formatters.rb', line 7

def initialize(options={})
  @options = options
end

Instance Method Details

#columns(*columns) ⇒ Object 



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# File 'lib/google_visualr/formatters.rb', line 12

def columns(*columns)
  @columns = columns.flatten
end

#options(*options) ⇒ Object 



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# File 'lib/google_visualr/formatters.rb', line 16

def options(*options)
  @options = stringify_keys!(options.pop)
end

#to_js {|js| ... } ⇒ Object

Yields:

  • (js) 


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# File 'lib/google_visualr/formatters.rb', line 20

def to_js(&block)
  js   = "\nvar formatter = new google.visualization.#{self.class.to_s.split('::').last}("
  js  <<  js_parameters(@options)
  js  << ");"

  yield js if block_given?

  @columns.each do |column|
   js << "\nformatter.format(data_table, #{column});"
  end

  js
end