Module: HashQuery::Extension

Included in:
Hash
Defined in:
lib/hash_query.rb

Instance Method Summary collapse

Instance Method Details

#query_value(selectors) ⇒ Object 



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# File 'lib/hash_query.rb', line 47

def query_value(selectors)
  values = query_values(selectors)
  values && values.first
end

#query_values(selectors) ⇒ Object

Public: Scans the hash data strucure looking for keys that match the psuedo css selector.

selectors - String of pseudo css selectors to navigate hash structure

Examples

entity = { 
  :a => 1, 
  :b => { 
    :c => {
      :d => { 
        :e => 2, 
        :f => 3 
      }
    },
    :cc => [
      3,
      {
        :g => 6,
        :h => 7,
        :i => [ 8, 9, 10, 11 ]
      },
      4,
      5
    ]
  }
}.to_entity
entity.query('a')         # => 1
entity.query('a b c d e') # => 2
entity.query('c d e')     # => 2
entity.query('a>string')
entity.query('a:string')

Returns a value or collection of values that are found.



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# File 'lib/hash_query.rb', line 42

def query_values(selectors)
  @_query ||= HashQuery::Query.new(self)
  @_query.query(selectors)
end