Class: FlexExcel

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

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path, sheet) ⇒ FlexExcel

Returns a new instance of FlexExcel.



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# File 'lib/flex_excel.rb', line 28

def initialize (path, sheet)
  @sheet = SimpleXlsxReader.open(path).sheets[sheet]
  @rows = @sheet.rows
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args) ⇒ Object 



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# File 'lib/flex_excel.rb', line 76

def method_missing (method, *args)
  @rows.send(method, *args)
end

Class Method Details

.mass_cast(hashes, scheme) ⇒ Object 



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# File 'lib/flex_excel.rb', line 7

def mass_cast (hashes, scheme)
  keys = hashes.first.keys

  hashes.each { |hash|
    hash.values.each_with_index { |value, index|
      if scheme[index].is_a?(Array)
        new_value = value
        scheme[index].each { |meth|
          new_value = new_value.send(meth)
        }
        hash.store(keys[index], new_value)
      elsif scheme[index] != 0
        hash.store(keys[index], value.send(scheme[index]))
      end
    }
  }
  hashes
end

Instance Method Details

#add_headers!(headers) ⇒ Object 



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# File 'lib/flex_excel.rb', line 68

def add_headers! (headers)
  @rows.unshift(headers)
end

#chop!(index) ⇒ Object 



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# File 'lib/flex_excel.rb', line 72

def chop! (index)
  @rows.map { |row| row[0..index]}
end

#headers ⇒ Object 



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# File 'lib/flex_excel.rb', line 84

def headers
  @sheet.rows.first
end

#rows ⇒ Object 



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# File 'lib/flex_excel.rb', line 80

def rows
  @sheet.rows
end

#to_hash(mode = nil, labels = [], convert = {}, filter = {}) ⇒ Object 



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# File 'lib/flex_excel.rb', line 33

def to_hash (mode = nil, labels = [], convert = {}, filter = {})
  hdr = headers
  raise ArgumentError('Headers must be unique') if hdr.compact.size != hdr.compact.uniq.size
  output = []
  @rows[1..-1].each { |row|
    hash = {}
    hdr.each_with_index { |label, index|

      if filter.keys.include?(label.downcase) && filter[label.downcase] ==
          row[index]
        hash = nil
        break
      else

        if convert.empty?
          key = label
        else
          key = convert[label.downcase] unless label.nil?
        end

        if mode.nil?
          hash.store(key, row[index]) unless label.nil?
        elsif mode == 'trim'
          hash.store(key, row[index]) unless label.nil? || labels.include?(label.downcase)
        elsif mode == 'keep'
          hash.store(key, row[index]) if key != nil && labels.include?(label.downcase)
        end
      end

    }
    output << hash
  }
  output.compact!
end