Class: Canvas::Utils::Csv

Inherits:
Object
  • Object
show all
Defined in:
app/models/canvas/utils/csv.rb

Class Method Summary collapse

Class Method Details

.create_csv(models, headers) ⇒ Object 



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# File 'app/models/canvas/utils/csv.rb', line 14

def self.create_csv(models, headers)
  CSV.generate do |csv|
    csv << headers.map do |header|
      header.instance_of?(Hash) ? header.values.first.to_s : header.to_s
    end
    models.each do |model|
      csv << headers.map do |header|
        const = header.instance_of?(Hash) ? header.keys.first : header
        model.respond_to?(const) ? model.send(const) : nil
      end
    end
  end
end

.hash_csv(csv_string) ⇒ Object 



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# File 'app/models/canvas/utils/csv.rb', line 6

def self.hash_csv(csv_string)
  CSV.parse(csv_string, {:headers => true, :return_headers => false, :header_converters => :symbol} )
end

.hash_csv_file(file_path) ⇒ Object 



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# File 'app/models/canvas/utils/csv.rb', line 10

def self.hash_csv_file(file_path)
  CSV.read(file_path, {:headers => true, :return_headers => false, :header_converters => :symbol} )
end

.unzip_csv(zip) ⇒ Object 



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# File 'app/models/canvas/utils/csv.rb', line 28

def self.unzip_csv(zip)
  {}.tap do |h|
    Zip::InputStream.open(StringIO.new(zip)) do |archive|
      while entry = archive.get_next_entry
        h[entry.name] = self.hash_csv(archive.read)
      end
    end
  end
end