class CSVHasher

Public Class Methods

hashify(path_to_csv, options = { original_col_as_keys: false }) click to toggle source

get arrays of hashes from a CSV file instead of arrays of arrays

Example:

>> CSVHasher.hashify('path/to/csv/file')
=> [{:col_1=> '..', :col_2=> '..'},...]

Arguments:

path_to_csv: (String)
options: (Hash)
         original_col_as_keys: (Boolean)
                                if original_col_as_keys is true then keys are exactly the col headers
                                if original_col_as_keys is false then keys are spidercase symbols from col headers
         keys: (Array) Custom keys for the returned hashes

# File lib/csv_hasher.rb, line 21
def self.hashify(path_to_csv, options = { original_col_as_keys: false })
  csv_arrs = CSV.read(path_to_csv)
  keys = csv_keys options, csv_arrs
  start_index = options[:keys].nil? || options[:include_headers] ? 1 : 0
  csv_arrs[start_index..-1].map {|a| Hash[keys.zip(a)] }
end

Private Class Methods

col_keys(keys) click to toggle source

this method converts the header of the CSV into an array of sym keys

# File lib/csv_hasher.rb, line 42
def self.col_keys(keys)
  keys.map{ |k| k.gsub('  ',' ').gsub(' ','_').downcase.to_sym }
end

csv_keys(options, csv_arrs) click to toggle source

This method gets the csv_keys based on the options and csv_arrs

# File lib/csv_hasher.rb, line 31
def self.csv_keys(options, csv_arrs)
  if options[:keys]
    options[:keys]
  elsif options[:original_col_as_keys]
    csv_arrs[0]
  else
    col_keys(csv_arrs[0])
  end
end