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Contents
# frozen_string_literal: true
class Serega
module SeregaPlugins
module Preloads
#
# Class that constructs main preloads path.
#
# When we have nested preloads we will use this path to dig to `main` element and
# assign nested preloads to it.
#
# By default its a path to latest provided preload
#
# @example
# MainPreloadPath.(a: { b: { c: {} }, d: {} }) # => [:a, :d]
#
class MainPreloadPath
class << self
# Finds default preload path
#
# @param preloads [Hash] Formatted user provided preloads hash
#
# @return [Array<Symbol>] Preloads path to `main` element
def call(preloads)
return FROZEN_EMPTY_ARRAY if preloads.empty?
main_path(preloads)
end
private
# Generates path (Array) to the last included resource.
# We need to know this path to include nested associations.
#
# main_path(a: { b: { c: {} }, d: {} }) # => [:a, :d]
#
def main_path(hash, path = [])
current_level = path.size
hash.each do |key, data|
path.pop(path.size - current_level)
path << key
main_path(data, path)
end
path
end
end
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems