Class: ActiveReport::Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/active_report/hash.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(datum, only: nil, except: nil, headers: nil, options: {}) ⇒ Hash

Returns a new instance of Hash.



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# File 'lib/active_report/hash.rb', line 5

def initialize(datum, only: nil, except: nil, headers: nil, options: {})
  @datum   = datum
  @only    = only
  @except  = except
  @headers = headers
  @options = options
end

Instance Attribute Details

#datum ⇒ Object

Returns the value of attribute datum.



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# File 'lib/active_report/hash.rb', line 3

def datum
  @datum
end

#except ⇒ Object

Returns the value of attribute except.



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# File 'lib/active_report/hash.rb', line 3

def except
  @except
end

#headers ⇒ Object

Returns the value of attribute headers.



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# File 'lib/active_report/hash.rb', line 3

def headers
  @headers
end

#only ⇒ Object

Returns the value of attribute only.



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# File 'lib/active_report/hash.rb', line 3

def only
  @only
end

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/active_report/hash.rb', line 3

def options
  @options
end

Class Method Details

.export(datum, only: nil, except: nil, headers: nil, options: {}) ⇒ Object 



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# File 'lib/active_report/hash.rb', line 13

def self.export(datum, only: nil, except: nil, headers: nil, options: {})
  new(datum, only: only, except: except, headers: headers, options: options).export
end

.import(datum, only: nil, except: nil, headers: nil, options: {}) ⇒ Object 



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# File 'lib/active_report/hash.rb', line 17

def self.import(datum, only: nil, except: nil, headers: nil, options: {})
  new(datum, only: only, except: except, headers: headers, options: options).import
end

Instance Method Details

#export ⇒ Object 



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# File 'lib/active_report/hash.rb', line 21

def export
  @datum  = [].push(@datum).compact  unless @datum.is_a?(Array)
  @only   = [].push(@only).compact   unless @only.is_a?(Array)
  @except = [].push(@except).compact unless @except.is_a?(Array)

  CSV.generate(@options) do |csv|
    header = @datum.first.dup.keep_if   { |k,v| @only.include?(k) }   unless @only.empty?
    header = @datum.first.dup.delete_if { |k,v| @except.include?(k) } unless @except.empty?
    csv << (@headers || (header || @datum.first).keys.map { |k| k.to_s.gsub("_", " ").capitalize})

    @datum.each do |data|
      cell = data.dup.keep_if   { |k,v| @only.include?(k) }   unless @only.empty?
      cell = data.dup.delete_if { |k,v| @except.include?(k) } unless @except.empty?
      csv << (cell || data).values
    end
  end
end

#import ⇒ Object 



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# File 'lib/active_report/hash.rb', line 39

def import
  @only   = [].push(@only).compact   unless @only.is_a?(Array)
  @except = [].push(@except).compact unless @except.is_a?(Array)

  processed_datum = []
  CSV.foreach(@datum, @options).each_with_index do |data, line|
    if @headers.nil? && line.zero?
      @headers = data
    else
      processed_data = {}
      @headers.each_with_index do |v,i|
        processed_data.store(v.to_s, data.fetch(i, nil) )
      end

      processed_data.keep_if   { |k,v| @only.include?(k) }   unless @only.empty?
      processed_data.delete_if { |k,v| @except.include?(k) } unless @except.empty?

      processed_datum.push(processed_data)
    end
  end
  return(processed_datum)
end