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198 lines
6.3 KiB
198 lines
6.3 KiB
#-- encoding: UTF-8
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#-- copyright
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# ChiliProject is a project management system.
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#
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# Copyright (C) 2010-2011 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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# See doc/COPYRIGHT.rdoc for more details.
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#++
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#
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class CustomField < ActiveRecord::Base
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has_many :custom_values, :dependent => :delete_all
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acts_as_list :scope => 'type = \'#{self.class}\''
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translates :name,
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:default_value,
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:possible_values
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accepts_nested_attributes_for :translations,
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:allow_destroy => true,
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:reject_if => proc { |attributes| attributes['locale'].blank? ||
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(attributes.size == 1 && attributes.has_key?('locale')) }
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def translations_attributes_with_globalized=(attr)
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ret = self.translations_attributes_without_globalized=(attr)
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# enable globalize to access newly set attributes
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translations.loaded
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# remove previously set translated attributes so that they do not override
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# the ones set here
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globalize.reset
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globalize.stash.clear
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ret
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end
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alias_method_chain :translations_attributes=, :globalized
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validates_presence_of :name, :field_format
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validates_uniqueness_of :name, :scope => [:type, :locale]
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validates_length_of :name, :maximum => 30
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validates_inclusion_of :field_format, :in => Redmine::CustomFieldFormat.available_formats
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def initialize(attributes = nil)
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super
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self.possible_values ||= []
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end
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def before_validation
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# make sure these fields are not searchable
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self.searchable = false if %w(int float date bool).include?(field_format)
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true
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end
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def validate
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if self.field_format == "list"
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errors.add(:possible_values, :blank) if self.possible_values.nil? || self.possible_values.empty?
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errors.add(:possible_values, :invalid) unless self.possible_values.is_a? Array
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end
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# validate default value in every translation available
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required_field = is_required
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is_required = false
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self.translated_locales.each do |locale|
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I18n.with_locale(locale) do
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v = CustomValue.new(:custom_field => self, :value => I18n.without_fallbacks{default_value}, :customized => nil)
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errors.add(:default_value, :invalid) unless v.valid?
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end
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end
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is_required = required_field
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end
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def possible_values_options(obj=nil)
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case field_format
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when 'user', 'version'
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if obj.respond_to?(:project) && obj.project
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case field_format
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when 'user'
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obj.project.users.sort.collect {|u| [u.to_s, u.id.to_s]}
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when 'version'
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obj.project.versions.sort.collect {|u| [u.to_s, u.id.to_s]}
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end
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else
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[]
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end
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else
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locale = obj if obj.is_a?(String) || obj.is_a?(Symbol)
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attribute = globalize.fetch(locale || self.class.locale || I18n.locale, :possible_values)
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attribute
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end
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end
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def possible_values(obj=nil)
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case field_format
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when 'user'
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possible_values_options(obj).collect(&:last)
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else
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globalize.fetch(obj || self.class.locale || I18n.locale, :possible_values)
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end
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end
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# Makes possible_values accept a multiline string
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def possible_values=(arg)
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if arg.is_a?(Array)
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value = arg.compact.collect(&:strip).select {|v| !v.blank?}
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globalize.write(self.class.locale || I18n.locale, :possible_values, value)
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self[:possible_values] = value
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else
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self.possible_values = arg.to_s.split(/[\n\r]+/)
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end
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end
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def cast_value(value)
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casted = nil
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unless value.blank?
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case field_format
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when 'string', 'text', 'list'
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casted = value
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when 'date'
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casted = begin; value.to_date; rescue; nil end
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when 'bool'
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casted = (value == '1' ? true : false)
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when 'int'
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casted = value.to_i
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when 'float'
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casted = value.to_f
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when 'user', 'version'
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casted = (value.blank? ? nil : field_format.classify.constantize.find_by_id(value.to_i))
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end
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end
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casted
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end
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# Returns a ORDER BY clause that can used to sort customized
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# objects by their value of the custom field.
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# Returns false, if the custom field can not be used for sorting.
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def order_statement
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case field_format
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when 'string', 'text', 'list', 'date', 'bool'
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# COALESCE is here to make sure that blank and NULL values are sorted equally
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"COALESCE((SELECT cv_sort.value FROM #{CustomValue.table_name} cv_sort" +
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" WHERE cv_sort.customized_type='#{self.class.customized_class.name}'" +
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" AND cv_sort.customized_id=#{self.class.customized_class.table_name}.id" +
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" AND cv_sort.custom_field_id=#{id} LIMIT 1), '')"
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when 'int', 'float'
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# Make the database cast values into numeric
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# Postgresql will raise an error if a value can not be casted!
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# CustomValue validations should ensure that it doesn't occur
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"(SELECT CAST(cv_sort.value AS decimal(60,3)) FROM #{CustomValue.table_name} cv_sort" +
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" WHERE cv_sort.customized_type='#{self.class.customized_class.name}'" +
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" AND cv_sort.customized_id=#{self.class.customized_class.table_name}.id" +
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" AND cv_sort.custom_field_id=#{id} AND cv_sort.value <> '' AND cv_sort.value IS NOT NULL LIMIT 1)"
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else
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nil
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end
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end
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def <=>(field)
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position <=> field.position
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end
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def self.customized_class
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self.name =~ /^(.+)CustomField$/
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begin; $1.constantize; rescue nil; end
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end
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# to move in project_custom_field
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def self.for_all
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find(:all, :conditions => ["is_for_all=?", true], :order => 'position')
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end
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def type_name
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nil
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end
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end
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# for the sake of nested attributes it is necessary to redefine possible_values
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# the values get set directly on the translations association
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class CustomField::Translation < ActiveRecord::Base
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serialize :possible_values
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def possible_values=(arg)
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if arg.is_a?(Array)
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value = arg.compact.collect(&:strip).select {|v| !v.blank?}
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write_attribute(:possible_values, value)
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else
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self.possible_values = arg.to_s.split(/[\n\r]+/)
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end
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end
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end
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