Module: MetaWhere::JoinDependency
- Defined in:
- lib/meta_where/join_dependency.rb
Defined Under Namespace
Classes: AssociationNotFoundError, BaseMismatchError, ConfigurationError
Class Method Summary
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Instance Method Summary
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Class Method Details
.included(base) ⇒ Object
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# File 'lib/meta_where/join_dependency.rb', line 4
def self.included(base)
base.class_eval do
alias_method_chain :build, :metawhere
alias_method_chain :find_join_association, :metawhere
end
end
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Instance Method Details
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# File 'lib/meta_where/join_dependency.rb', line 15
def build_with_metawhere(associations, parent = nil, join_type = Arel::InnerJoin)
parent ||= join_parts.last
if MetaWhere::JoinType === associations
klass = associations.klass
join_type = associations.join_type
associations = associations.name
end
case associations
when Symbol, String
reflection = parent.reflections[associations.to_s.intern] or
raise ConfigurationError, "Association named '#{ associations }' was not found; perhaps you misspelled it?"
unless (association = find_join_association(reflection, parent)) && (!klass || association.active_record == klass)
@reflections << reflection
if reflection.options[:polymorphic]
raise ArgumentError, "You can't create a polymorphic belongs_to join without specifying the polymorphic class!" unless klass
association = PolymorphicJoinAssociation.new(reflection, self, klass, parent)
else
association = build_join_association(reflection, parent)
end
association.join_type = join_type
@join_parts << association
cache_joined_association(association)
end
association
else
build_without_metawhere(associations, parent, join_type)
end
end
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# File 'lib/meta_where/join_dependency.rb', line 45
def find_join_association_with_metawhere(name_or_reflection, parent)
case name_or_reflection
when MetaWhere::JoinType
join_associations.detect do |j|
(j.reflection.name == name_or_reflection.name) &&
(j.reflection.klass == name_or_reflection.klass) &&
(j.parent == parent)
end
else
case name_or_reflection
when Symbol, String
join_associations.detect {|j| (j.reflection.name == name_or_reflection.to_s.intern) && (j.parent == parent)}
else
join_associations.detect {|j| (j.reflection == name_or_reflection) && (j.parent == parent)}
end
end
end
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