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130 lines
3.0 KiB
130 lines
3.0 KiB
#-- copyright
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# OpenProject is a project management system.
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# Copyright (C) 2012-2017 the OpenProject Foundation (OPF)
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License version 3.
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#
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# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
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# Copyright (C) 2006-2017 Jean-Philippe Lang
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# Copyright (C) 2010-2013 the ChiliProject Team
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# See doc/COPYRIGHT.rdoc for more details.
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#++
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class Queries::BaseQuery
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class << self
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attr_accessor :model
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end
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include Queries::AvailableFilters
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include Queries::AvailableOrders
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include ActiveModel::Validations
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validate :filters_valid,
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:sortation_valid
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def initialize(user: nil)
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@filters = []
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@orders = []
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@user = user
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end
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def results
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scope = default_scope
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if valid?
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filters.each do |filter|
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scope = scope.merge(filter.scope)
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end
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orders.each do |order|
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scope = scope.merge(order.scope)
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end
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else
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scope = empty_scope
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end
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scope
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end
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def where(attribute, operator, values)
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filter = filter_for(attribute)
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filter.operator = operator
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filter.values = values
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filter.context = context
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filters << filter
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self
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end
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def order(hash)
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hash.each do |attribute, direction|
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order = order_for(attribute)
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order.direction = direction
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orders << order
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end
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self
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end
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def default_scope
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self.class.model.all
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end
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protected
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attr_accessor :filters,
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:orders,
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:user
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def filters_valid
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filters.each do |filter|
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next if filter.valid?
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add_error(:filters, filter.human_name, filter)
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end
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end
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def sortation_valid
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orders.each do |order|
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next if order.valid?
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add_error(:orders, order.class.key, order)
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end
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end
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def add_error(local_attribute, attribute_name, object)
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messages = object
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.errors
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.messages
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.values
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.flatten
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.join(" #{I18n.t('support.array.sentence_connector')} ")
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errors.add local_attribute, errors.full_message(attribute_name, messages)
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end
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def empty_scope
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self.class.model.where(Arel::Nodes::Equality.new(1, 0))
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end
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def context
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nil
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end
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end
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