OpenProject is the leading open source project management software.
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openproject/app/models/hourly_rate.rb

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#-- copyright
# OpenProject Costs Plugin
#
# Copyright (C) 2009 - 2014 the OpenProject Foundation (OPF)
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# version 3.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#++
class HourlyRate < Rate
validates_uniqueness_of :valid_from, scope: [:user_id, :project_id]
validates_presence_of :user_id, :project_id, :valid_from
validate :change_of_user_only_on_first_creation
def previous(reference_date = valid_from)
# This might return a default rate
user.rate_at(reference_date - 1, project)
end
def next(reference_date = valid_from)
HourlyRate
.where(['user_id = ? and project_id = ? and valid_from > ?',
user_id, project_id, reference_date])
.order('valid_from ASC')
.first
end
def self.history_for_user(usr, check_permissions = true)
rates = Hash.new
Project.has_module(:costs_module).active.visible.each do |project|
next if check_permissions && !User.current.allowed_to?(:view_hourly_rates, project, for_user: usr)
rates[project] = HourlyRate
.where(user_id: usr, project_id: project)
.order("#{HourlyRate.table_name}.valid_from desc")
end
# FIXME: What permissions to apply here?
rates[nil] = DefaultHourlyRate
.where(user_id: usr)
.order("#{DefaultHourlyRate.table_name}.valid_from desc")
rates
end
def self.at_date_for_user_in_project(date, user_id, project = nil, include_default = true)
user_id = user_id.id if user_id.is_a?(User)
unless project.nil?
rate = where(['user_id = ? and project_id = ? and valid_from <= ?', user_id, project, date])
.order('valid_from DESC')
.first
if rate.nil?
project = Project.find(project) unless project.is_a?(Project)
rate = where(['user_id = ? and project_id in (?) and valid_from <= ?',
user_id,
project.ancestors.to_a,
date])
.includes(:project)
.order('projects.lft DESC, valid_from DESC')
.first
end
end
rate ||= DefaultHourlyRate.at_for_user(date, user_id) if include_default
rate
end
private
def change_of_user_only_on_first_creation
# Only allow change of project and user on first creation
return if self.new_record?
errors.add :project_id, :invalid if project_id_changed?
errors.add :user_id, :invalid if user_id_changed?
end
end