Class: Json2::Header

Inherits:
Object
  • Object
show all
Defined in:
lib/json2/header.rb

Overview

Build a csv header.

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(keys) ⇒ Header

Creates a new Header instance.

keys - A Hash of String names of variable/column.



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# File 'lib/json2/header.rb', line 19

def initialize(keys)
  @header = []
  @keys = keys
end

Class Method Details

.get(keys) ⇒ Object

Get the header of a Csv file.

For a description of the parameter(s) see Header#initialize.

Returns the String header, that is a single line with comma separated column’s name.



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# File 'lib/json2/header.rb', line 12

def self.get(keys)
  new(keys).get
end

Instance Method Details

#get ⇒ Object

Get the header of a Csv file. See also Header.get.

Returns the String header.



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# File 'lib/json2/header.rb', line 27

def get
  @keys.each do |key|
    short_name = key.split('.').last
    @header << (@header.include?(short_name) ? key : short_name)
  end
  @header.join(',') + "\n"
end