class BetterValidations::ValidatorsList
Provides a way to merge multiple validators in order to get merged errors from all of them. Usage:
validator = validator_one.merge(validator_two, validator_three) validator.valid? validator.errors.detailed_messages
Public Class Methods
new(*validators)
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# File lib/better_validations/validators_list.rb, line 9 def initialize(*validators) @validators = validators end
Public Instance Methods
deep_merge(hash_one, hash_two)
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# File lib/better_validations/validators_list.rb, line 39 def deep_merge(hash_one, hash_two) # Use a standard method to do a deep merge by specify # a values concatination logic hash_one.deep_merge(hash_two) do |_key, this_value, other_value| # Arrays has a complex logic - they must be merged if this_value.is_a?(Array) || other_value.is_a?(Array) merge_arrays(this_value, other_value) else this_value.nil? ? other_value : this_value end end end
detailed_messages(wrap_attributes_to: nil)
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# File lib/better_validations/validators_list.rb, line 29 def detailed_messages(wrap_attributes_to: nil) (@invalid_validators || []).reduce({}) do |all_messages, validator| messages = validator.errors.detailed_messages( wrap_attributes_to: wrap_attributes_to ) deep_merge(all_messages, messages) end end
errors()
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# File lib/better_validations/validators_list.rb, line 13 def errors self end
invalid?()
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# File lib/better_validations/validators_list.rb, line 25 def invalid? !valid? end
merge_arrays(one, two)
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# File lib/better_validations/validators_list.rb, line 52 def merge_arrays(one, two) # If we have arrays of strings it means that we have arrays of errors: # ['Error 1', 'Error 2'] and ['Error 3', 'Error 4']. In this case we # just concat arrays and get unique values. if one.first.is_a?(String) || two.first.is_a?(String) return (one + two).uniq end # Other type of arrays is an array of hashes. Each hash is # an object with attributes: # [{ id: 1, client_id: 2, key: "String", another_key: {} }] merge_arrays_with_errors(one, two) end
merge_arrays_with_errors(one, two)
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Merges arrays of hashes to a single array by deep merging items with the same “:id” and “:client_id”.
# File lib/better_validations/validators_list.rb, line 68 def merge_arrays_with_errors(one, two) all = one + two all = merge_hashes_by_key(all, :id) merge_hashes_by_key(all, :client_id) end
merge_hashes_by_key(hashes, key)
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# File lib/better_validations/validators_list.rb, line 74 def merge_hashes_by_key(hashes, key) hashes_by_id = hashes.group_by { |hash| hash[key] } hashes_by_id.map do |id, hashes_with_id| next hashes_with_id if id.nil? # Merge all hashes with the same id to the single hash. # Wrap to array in order to save a format (hashes_with_id is a array) [hashes_with_id.reduce({}) { |result, hash| deep_merge(result, hash) }] end.flatten(1) end
valid?()
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# File lib/better_validations/validators_list.rb, line 17 def valid? if @invalid_validators.nil? @invalid_validators = @validators.select(&:invalid?) end @invalid_validators.blank? end