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Class: ActiveRecord::Relation::HashMerger

Do not use. This class is for internal use only.
Relationships & Source Files
Inherits: Object
Defined in: activerecord/lib/active_record/relation/merger.rb

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new(relation, hash) ⇒ HashMerger

[ GitHub ] 

  


# File 'activerecord/lib/active_record/relation/merger.rb', line 10



def initialize(relation, hash)
  hash.assert_valid_keys(*Relation::VALUE_METHODS)

  @relation = relation
  @hash     = hash
end


  







Instance Attribute Details



  

    #hash   (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/merger.rb', line 8



attr_reader :relation, :hash


  








  

    #relation   (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/merger.rb', line 8



attr_reader :relation, :hash


  







Instance Method Details



  

    #merge  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/merger.rb', line 17



def merge
  Merger.new(relation, other).merge
end


  








  

    #other  
  



  

    

Applying values to a relation has some side effects. E.g. interpolation might take place for where values. So we should build a relation to merge in rather than directly merging the values.


  



  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/relation/merger.rb', line 25



def other
  other = Relation.create(
    relation.model,
    table: relation.table,
    predicate_builder: relation.predicate_builder
  )
  hash.each do |k, v|
    k = :_select if k == :select
    if Array === v
      other.public_send("#{k}!", *v)
    else
      other.public_send("#{k}!", v)
    end
  end
  other
end