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class Event < ApplicationRecord
include RruleHumanizer
belongs_to :node, optional: true
has_many :occurrences, dependent: :destroy
acts_as_taggable_on :tags
validates :title, presence: true, unless: -> { node_id.present? }
after_save :generate_occurrences
def occurrences_in_range start_time, end_time
self.occurrences.where(
"start_time > ? AND end_time < ?",
start_time, end_time
)
end
def display_title
title.presence || node&.head&.title || "Untitled event"
end
def save_witnessed(actor:)
saved = false
transaction do
saved = save
raise ActiveRecord::Rollback unless saved
witness_event!("event_create", actor)
end
saved
end
def update_witnessed(attributes, actor:)
updated = false
transaction do
updated = update(attributes)
raise ActiveRecord::Rollback unless updated
changes = event_changes
witness_event!("event_update", actor, changes) if changes.any?
end
updated
end
def destroy_witnessed(actor:)
destroyed = false
transaction do
witness_event!("event_destroy", actor)
destroyed = destroy
raise ActiveRecord::Rollback unless destroyed
end
destroyed
end
private
def generate_occurrences
Occurrence.generate self
end
def event_snapshot
{
:event_title => title.presence || node&.unique_name || "##{id}",
:start_time => start_time&.iso8601,
:end_time => end_time&.iso8601,
:allday => allday,
:rrule => rrule.presence,
:location => location.presence,
:url => url.presence,
:event_tags => tag_list.to_a.sort,
:path => node&.unique_name
}.compact
end
def event_changes
pairs = {}
saved_changes.except("updated_at", "created_at", "description")
.each do |attribute, (before, after)|
key, pair =
case attribute
when "node_id"
["node_path", { "from" => Node.find_by(:id => before)&.unique_name,
"to" => Node.find_by(:id => after)&.unique_name }]
when "start_time", "end_time"
[attribute, { "from" => before&.iso8601, "to" => after&.iso8601 }]
when "tag_list"
["tags", { "from" => Array(before).sort, "to" => Array(after).sort }]
else
[attribute, { "from" => before, "to" => after }]
end
pairs[key] = pair
end
extra = {}
extra[:changes] = pairs if pairs.any?
extra[:description_changed] = true if saved_changes.key?("description")
extra
end
def witness_event!(verb, actor, extra = {})
NodeAction.record!(:node => node, :participants => [node, self].compact,
:action => verb, :user => actor,
**event_snapshot, **extra)
end
end
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