Class: ActiveRecord::Relation::HashMerger
- Defined in:
- activerecord/lib/active_record/relation/merger.rb
Overview
:nodoc:
Instance Attribute Summary collapse
-
#hash ⇒ Object
readonly
Returns the value of attribute hash.
-
#relation ⇒ Object
readonly
Returns the value of attribute relation.
Instance Method Summary collapse
-
#initialize(relation, hash) ⇒ HashMerger
constructor
A new instance of HashMerger.
-
#merge ⇒ Object
:nodoc:.
-
#other ⇒ Object
Applying values to a relation has some side effects.
Constructor Details
#initialize(relation, hash) ⇒ HashMerger
Returns a new instance of HashMerger.
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# 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 ⇒ Object (readonly)
Returns the value of attribute hash
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# File 'activerecord/lib/active_record/relation/merger.rb', line 8 def hash @hash end |
#relation ⇒ Object (readonly)
Returns the value of attribute relation
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# File 'activerecord/lib/active_record/relation/merger.rb', line 8 def relation @relation end |
Instance Method Details
#merge ⇒ Object
:nodoc:
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# File 'activerecord/lib/active_record/relation/merger.rb', line 17 def merge #:nodoc: Merger.new(relation, other).merge end |
#other ⇒ Object
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.
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# File 'activerecord/lib/active_record/relation/merger.rb', line 25 def other other = Relation.create( relation.klass, table: relation.table, predicate_builder: relation.predicate_builder ) hash.each { |k, v| if k == :joins if Hash === v other.joins!(v) else other.joins!(*v) end elsif k == :select other._select!(v) else other.send("#{k}!", v) end } other end |