Class: PassaporteWeb::Helpers

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

Class Method Summary collapse

Class Method Details

.convert_to_ostruct_recursive(obj, options = {}) ⇒ Object

Converts a Hash recursevely to a OpenStruct object.

Example:

hash = {a: 1, b: {c: 3, d: 4, e: {f: 6, g: 7}}}
os = PassaporteWeb::Helpers.convert_to_ostruct_recursive(hash)
os.a # => 1
os.b # => {c: 3, d: 4, e: {f: 6, g: 7}}
os.b.c # => 3
os.b.d # => 4
os.b.e # => {f: 6, g: 7}
os.b.e.f # => 6
os.b.e.g # => 7



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# File 'lib/passaporte_web/helpers.rb', line 51

def self.convert_to_ostruct_recursive(obj, options={})
  result = obj
  if result.is_a? Hash
    result = result.dup
    result.each do |key, val|
      result[key] = convert_to_ostruct_recursive(val, options) unless (!options[:exclude].nil? && options[:exclude].include?(key))
    end
    result = OpenStruct.new result
  elsif result.is_a? Array
    result = result.map { |r| convert_to_ostruct_recursive(r, options) }
  end
  return result
end

.meta_links_from_header(link_header) ⇒ Object

Converts pagination information from a Link header in a HTTP response to a Hash

Example:

link_header = "<http://sandbox.app.passaporteweb.com.br/organizations/api/accounts/?page=3&limit=3>; rel=next, <http://sandbox.app.passaporteweb.com.br/organizations/api/accounts/?page=1&limit=3>; rel=prev, <http://sandbox.app.passaporteweb.com.br/organizations/api/accounts/?page=5&limit=3>; rel=last, <http://sandbox.app.passaporteweb.com.br/organizations/api/accounts/?page=1&limit=3>; rel=first"
PassaporteWeb::Helpers.meta_links_from_header(link_header)
=> {limit: 3, next_page: 3, prev_page: 1, first_page: 1, last_page: 5}



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# File 'lib/passaporte_web/helpers.rb', line 13

def self.meta_links_from_header(link_header)
  hash = {limit: nil, next_page: nil, prev_page: nil, first_page: nil, last_page: nil}
  links = link_header.split(',').map(&:strip)

  if link_header.match(/limit\=([0-9]+)/)
    hash[:limit] = Integer($1)
  end

  links.each do |link|
    if link.match(/page\=([0-9]+).*rel\=([a-z]+)/)
      case $2
      when 'next'
        hash[:next_page] = Integer($1)
      when 'prev'
        hash[:prev_page] = Integer($1)
      when 'first'
        hash[:first_page] = Integer($1)
      when 'last'
        hash[:last_page] = Integer($1)
      end
    end
  end

  hash
end