Module: Buckaruby::FieldMapper

Defined in:
lib/buckaruby/field_mapper.rb

Overview

Map NVP fields to hashes and multiple values (with index) to arrays.

Class Method Summary collapse

Class Method Details

.map_fields(params, prefix) ⇒ Object 



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
 
# File 'lib/buckaruby/field_mapper.rb', line 10

def map_fields(params, prefix)
  results = []
  index = 1

  loop do
    index_key = "#{prefix}_#{index}_" # brq_services_1_
    index_length = index_key.split(/_[0-9]*_/).length # 1

    # Get all fields starting with prefix and index.
    fields = params.select { |key| key.to_s.start_with?(index_key) }

    break if fields.empty?

    result = Support::CaseInsensitiveHash.new

    fields.each do |key, value|
      splitted_key = key.to_s.split(/_[0-9]*_/) # ["brq_services", "name"]
      key_length = splitted_key.length # 2
      new_key = splitted_key[index_length] # name

      if key_length == index_length + 1
        # Add normal fields to the result.
        result[new_key] = value
      else
        # Recursively map indexed fields.
        result[new_key] ||= begin
          new_prefix = [index_key, new_key].join
          map_fields(fields, new_prefix)
        end
      end
    end

    break if result.empty?

    results << result

    index += 1
  end

  results
end