Class: RelationToJSON::BelongsToReflection

Inherits:
BaseReflection show all
Defined in:
lib/relation_to_json/belongs_to_reflection.rb

Instance Attribute Summary

Attributes inherited from BaseReflection

#name, #reflection, #required_columns

Instance Method Summary collapse

Methods inherited from BaseReflection

#foreign_key, #initialize, #primary_key

Constructor Details

This class inherits a constructor from RelationToJSON::BaseReflection

Instance Method Details

#association_relation(transposed) ⇒ Object 



21
22
23
24
25
26
27
28
29
30
31
 
# File 'lib/relation_to_json/belongs_to_reflection.rb', line 21

def association_relation(transposed)
  if polymorphic?
    active_record.where(
      primary_key => transposed[foreign_key],
    )
  else
    klass.where(
      primary_key => transposed[foreign_key],
    )
  end
end

#pluck_association_columns(transposed) ⇒ Object 



5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
# File 'lib/relation_to_json/belongs_to_reflection.rb', line 5

def pluck_association_columns(transposed)
  return recurse_json_with_schema(transposed) if nested_relations?

  required_columns = Set[primary_key, *@required_columns]
  plucked_attributes = association_relation(transposed)
    .pluck(*required_columns)
    .map { |plucked| required_columns.zip(Array.wrap(plucked)).to_h }

  primary_key_indexed_plucked_values = plucked_attributes
    .to_h { |attributes| [attributes[primary_key], attributes] }

  transposed.fetch(foreign_key, []).map do |record_primary_key|
    primary_key_indexed_plucked_values[record_primary_key]
  end
end