Class: ArelExtensions::Nodes::Json

Inherits:
JsonNode show all
Defined in:
lib/arel_extensions/nodes/json.rb

Constant Summary

Constants inherited from JsonNode

ArelExtensions::Nodes::JsonNode::RETURN_TYPE

Constants inherited from Function

Function::RETURN_TYPE

Instance Attribute Summary

Attributes inherited from JsonNode

#dict

Instance Method Summary collapse

Methods inherited from JsonNode

#get, #group, #hash, #merge, #set

Methods inherited from Function

#!=, #==, #as, #convert_to_date_node, #convert_to_datetime_node, #convert_to_node, #convert_to_number, #convert_to_string_node, #expr, #left, #return_type, #right, #type_of_attribute

Methods included from Predications

#cast, #convert_to_node, #imatches, #in, #matches, #not_in, #when

Constructor Details

#initialize(*expr) ⇒ Json

Returns a new instance of Json.



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# File 'lib/arel_extensions/nodes/json.rb', line 33

def initialize *expr
  if expr.length == 1
    case expr.first
    when JsonNode
      @dict = expr.first.dict
    when Array
      @dict = expr.first.map{|e|
        (e.is_a?(Array) || e.is_a?(Hash)) ? Json.new(e) : convert_to_node(e)
      }
    when Hash
      @dict = expr.first.inject({}){|acc,v|
        acc[convert_to_node(v[0])] =  (v[1].is_a?(Array) || v[1].is_a?(Hash)) ? Json.new(v[1]) :  convert_to_node(v[1])
        acc
      }
    when String, Numeric, TrueClass, FalseClass
      @dict = convert_to_node(expr.first)
    when NilClass
      @dict = Arel.sql('null')
    else
      if expr.first.is_a?(String) || (expr.first.is_a?(Arel::Attributes::Attribute) && type_of_attribute(expr.first) == :string) || (expr.first.return_type == :string)
        @dict = convert_to_node(expr.first)
      else
        @dict = [convert_to_node(expr.first)]
      end
    end
  else
    @dict = expr.map{|e| (e.is_a?(Array) || e.is_a?(Hash)) ? Json.new(e) : convert_to_node(e) }
  end
  super
end