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Contents
require_relative "../exceptions"
module Statesman
module Adapters
class Mongoid
attr_reader :transition_class
attr_reader :parent_model
def initialize(transition_class, parent_model, observer, _ = {})
@transition_class = transition_class
@parent_model = parent_model
@observer = observer
unless transition_class_hash_fields.include?('statesman_metadata')
raise UnserializedMetadataError, metadata_field_error_message
end
end
def create(from, to, metadata = {})
from = from.to_s
to = to.to_s
transition = transitions_for_parent.build(to_state: to,
sort_key: next_sort_key,
statesman_metadata: metadata)
@observer.execute(:before, from, to, transition)
transition.save!
@last_transition = transition
@observer.execute(:after, from, to, transition)
@observer.execute(:after_commit, from, to, transition)
transition
ensure
@last_transition = nil
end
def history
transitions_for_parent.asc(:sort_key)
end
def last
@last_transition ||= history.last
end
private
def transition_class_hash_fields
transition_class.fields.select { |_, v| v.type == Hash }.keys
end
def metadata_field_error_message
"#{transition_class.name}#statesman_metadata is not of type 'Hash'"
end
def transitions_for_parent
@parent_model.send(@transition_class.collection_name)
end
def next_sort_key
(last && last.sort_key + 10) || 0
end
end
end
end
Version data entries
7 entries across 7 versions & 2 rubygems