Class: BabySqueel::JoinDependency::Builder

Inherits:
Object
  • Object
show all
Defined in:
lib/baby_squeel/join_dependency/builder.rb

Overview

Unfortunately, this is mostly all duplication of ActiveRecord::QueryMethods#build_joins

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(relation) ⇒ Builder

Returns a new instance of Builder.



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# File 'lib/baby_squeel/join_dependency/builder.rb', line 10

def initialize(relation)
  @relation = relation
  @joins_values = relation.joins_values.dup
end

Instance Attribute Details

#relation ⇒ Object (readonly)

:nodoc:



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# File 'lib/baby_squeel/join_dependency/builder.rb', line 8

def relation
  @relation
end

Instance Method Details

#ensure_associated(*values) ⇒ Object 



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# File 'lib/baby_squeel/join_dependency/builder.rb', line 15

def ensure_associated(*values)
  @joins_values += values
end

#find_alias(associations) ⇒ Object

Find the alias of a BabySqueel::Association, by passing a list (in order of chaining) of associations and finding the respective JoinAssociation at each level.



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# File 'lib/baby_squeel/join_dependency/builder.rb', line 39

def find_alias(associations)
  find_join_association(associations).table
end

#find_join_association(associations) ⇒ Object 



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# File 'lib/baby_squeel/join_dependency/builder.rb', line 28

def find_join_association(associations)
  associations.inject(join_root) do |parent, assoc|
    parent.children.find do |join_association|
      join_association.reflection == assoc._reflection
    end
  end
end

#join_dependency ⇒ Object 



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# File 'lib/baby_squeel/join_dependency/builder.rb', line 19

def join_dependency
  ::ActiveRecord::Associations::JoinDependency.new(
    relation.model,
    association_joins,
    join_list
  )
end