Module: Mongoid::Extensions::Hash::CriteriaHelpers

Included in:
Hash
Defined in:
lib/mongoid/extensions/hash/criteria_helpers.rb

Overview

Expands complex criterion into mongodb selectors.

Instance Method Summary collapse

Instance Method Details

#expand_complex_criteria ⇒ Hash

Expand the complex criteria into a MongoDB compliant selector hash.

Examples:

Convert the criterion.

{}.expand_complex_criteria

Returns:

  • (Hash) —

    The mongo selector.

Since:

  • 1.0.0



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# File 'lib/mongoid/extensions/hash/criteria_helpers.rb', line 17

def expand_complex_criteria
  {}.tap do |hsh|
    each_pair do |k, v|
      if k.respond_to?(:key) && k.respond_to?(:to_mongo_query)
        hsh[k.key] ||= {}
        v = v.expand_complex_criteria if v.is_a?(::Hash)
        hsh[k.key].merge!(k.to_mongo_query(v))
      else
        v.map!{|e| e.is_a?(::Hash) ? e.expand_complex_criteria : e } if v.is_a?(::Array)
        hsh[k] = v
      end
    end
  end
end

#extract_id ⇒ Object

Get the id attribute from this hash, whether it’s prefixed with an underscore or is a symbol.

Examples:

Extract the id.

{ :_id => 1 }.extract_id

Returns:

  • (Object) —

    The value of the id.

Since:

  • 2.3.2



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# File 'lib/mongoid/extensions/hash/criteria_helpers.rb', line 41

def extract_id
  self["id"] || self["_id"] || self[:id] || self[:_id]
end