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fab-manager/app/models/availability.rb

93 lines
3.0 KiB
Ruby

class Availability < ActiveRecord::Base
has_many :machines_availabilities, dependent: :destroy
has_many :machines, through: :machines_availabilities
accepts_nested_attributes_for :machines, allow_destroy: true
has_many :trainings_availabilities, dependent: :destroy
has_many :trainings, through: :trainings_availabilities
has_many :slots
has_many :reservations, through: :slots
has_one :event
has_many :availability_tags, dependent: :destroy
has_many :tags, through: :availability_tags
accepts_nested_attributes_for :tags, allow_destroy: true
scope :machines, -> { where(available_type: 'machines') }
scope :trainings, -> { includes(:trainings).where(available_type: 'training') }
attr_accessor :is_reserved, :slot_id, :can_modify
validates :start_at, :end_at, presence: true
validate :length_must_be_1h_minimum, unless: proc { end_at.blank? or start_at.blank? }
validate :should_be_associated
def safe_destroy
if available_type == 'machines'
reservations = Reservation.where(reservable_type: 'Machine', reservable_id: machine_ids).joins(:slots).where('slots.availability_id = ?', id)
else
reservations = Reservation.where(reservable_type: 'Training', reservable_id: training_ids).joins(:slots).where('slots.availability_id = ?', id)
end
if reservations.size == 0
# this update may not call any rails callbacks, that's why we use direct SQL update
update_column(:destroying, true)
destroy
else
false
end
end
def title(filter = {})
if available_type == 'machines'
if filter[:machine_ids]
return machines.to_ary.delete_if {|m| !filter[:machine_ids].include?(m.id)}.map(&:name).join(' - ')
end
return machines.map(&:name).join(' - ')
elsif available_type == 'event'
event.name
else
trainings.map(&:name).join(' - ')
end
end
# return training reservations is complete?
# if haven't defined a nb_total_places, places are unlimited
def is_completed
return false if nb_total_places.blank?
if available_type == 'training'
nb_total_places <= slots.to_a.select {|s| s.canceled_at == nil }.size
elsif available_type == 'event'
event.nb_free_places == 0
end
end
# TODO: refactoring this function for avoid N+1 query
def nb_total_places
if available_type == 'training'
if read_attribute(:nb_total_places).present?
read_attribute(:nb_total_places)
else
trainings.first.nb_total_places unless trainings.empty?
end
elsif available_type == 'event'
event.nb_total_places
end
end
private
def length_must_be_1h_minimum
if end_at < (start_at + 1.hour)
errors.add(:end_at, I18n.t('availabilities.must_be_at_least_1_hour_after_the_start_date'))
end
end
def should_be_associated
if available_type == 'machines' and machine_ids.count == 0
errors.add(:machine_ids, I18n.t('availabilities.must_be_associated_with_at_least_1_machine'))
end
end
end