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# frozen_string_literal: true
require "digest"
module PgSearch
class Configuration
class Association
attr_reader :columns
def initialize(model, name, column_names)
@model = model
@name = name
@columns = Array(column_names).map do |column_name, weight|
ForeignColumn.new(column_name, weight, @model, self)
end
end
def table_name
@model.reflect_on_association(@name).table_name
end
def join(primary_key)
"LEFT OUTER JOIN (#{relation(primary_key).to_sql}) #{subselect_alias} ON #{subselect_alias}.id = #{primary_key}"
end
def subselect_alias
Configuration.alias(table_name, @name, "subselect")
end
private
def selects
if singular_association?
selects_for_singular_association
else
selects_for_multiple_association
end
end
def selects_for_singular_association
columns.map do |column|
"#{column.full_name}::text AS #{column.alias}"
end.join(", ")
end
def selects_for_multiple_association
columns.map do |column|
"string_agg(#{column.full_name}::text, ' ') AS #{column.alias}"
end.join(", ")
end
def relation(primary_key)
result = @model.unscoped.joins(@name).select("#{primary_key} AS id, #{selects}")
result = result.group(primary_key) unless singular_association?
result
end
def singular_association?
%i[has_one belongs_to].include?(@model.reflect_on_association(@name).macro)
end
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems