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Contents
module LHS::Errors
class Nested < Base
def initialize(errors, scope)
@raw = errors
@messages = nest(errors.messages, scope)
@message = errors.message
@scope = scope
end
private
# Filters base errors by scope
# and reduces key by given scope name;
# returns plain array if end of tree is reached
def nest(messages, scope = nil)
scope = translate_rails_to_api_scope(scope)
return messages unless scope
messages = messages.select do |key, _|
key.match(/^#{scope}/)
end
# if only one key and this key has no dots, exit with plain
if reached_leaf?(messages)
messages.first[1]
else
remove_scope(messages, scope)
end
end
# Identifies if the end of nested errors tree is reached
def reached_leaf?(messages)
messages.keys.length == 1 &&
!messages.first[0].match(/\./)
end
# Removes scope from given messages' key
def remove_scope(messages, scope)
messages.each_with_object({}) do |element, hash|
key = element[0].to_s.gsub(/^#{scope}\./, '')
hash[key.to_sym] = element[1]
end
end
# Translates rails like accessors for collections
# like first, second, last to api error paths
def translate_rails_to_api_scope(scope)
case scope
when :first
0
when :second
1
when :last
return values.length - 1 if messages.present?
0
else
scope
end
end
end
end
Version data entries
29 entries across 29 versions & 1 rubygems