1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
# frozen_string_literal: true
module ActiveRecord
class TableMetadata # :nodoc:
delegate :foreign_type, :foreign_key, :join_primary_key, :join_foreign_key, to: :association, prefix: true
def initialize(klass, arel_table, association = nil)
@klass = klass
@arel_table = arel_table
@association = association
end
def resolve_column_aliases(hash)
new_hash = hash.dup
hash.each do |key, _|
if (key.is_a?(Symbol)) && klass.attribute_alias?(key)
new_hash[klass.attribute_alias(key)] = new_hash.delete(key)
end
end
new_hash
end
def arel_attribute(column_name)
if klass
klass.arel_attribute(column_name, arel_table)
else
arel_table[column_name]
end
end
def type(column_name)
if klass
klass.type_for_attribute(column_name)
else
Type.default_value
end
end
def has_column?(column_name)
klass && klass.columns_hash.key?(column_name.to_s)
end
def associated_with?(association_name)
klass && klass._reflect_on_association(association_name)
end
def associated_table(table_name)
association = klass._reflect_on_association(table_name) || klass._reflect_on_association(table_name.to_s.singularize)
if !association && table_name == arel_table.name
return self
elsif association && !association.polymorphic?
association_klass = association.klass
arel_table = association_klass.arel_table.alias(table_name)
else
type_caster = TypeCaster::Connection.new(klass, table_name)
association_klass = nil
arel_table = Arel::Table.new(table_name, type_caster: type_caster)
end
TableMetadata.new(association_klass, arel_table, association)
end
def polymorphic_association?
association && association.polymorphic?
end
def aggregated_with?(aggregation_name)
klass && reflect_on_aggregation(aggregation_name)
end
def reflect_on_aggregation(aggregation_name)
klass.reflect_on_aggregation(aggregation_name)
end
# TODO Change this to private once we've dropped Ruby 2.2 support.
# Workaround for Ruby 2.2 "private attribute?" warning.
protected
attr_reader :klass, :arel_table, :association
end
end
|
