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- # Redmine - project management software
- # Copyright (C) 2006-2011 Jean-Philippe Lang
- #
- # This program is free software; you can redistribute it and/or
- # modify it under the terms of the GNU General Public License
- # as published by the Free Software Foundation; either version 2
- # of the License, or (at your option) any later version.
- #
- # 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 IssueRelation < ActiveRecord::Base
- belongs_to :issue_from, :class_name => 'Issue', :foreign_key => 'issue_from_id'
- belongs_to :issue_to, :class_name => 'Issue', :foreign_key => 'issue_to_id'
-
- TYPE_RELATES = "relates"
- TYPE_DUPLICATES = "duplicates"
- TYPE_DUPLICATED = "duplicated"
- TYPE_BLOCKS = "blocks"
- TYPE_BLOCKED = "blocked"
- TYPE_PRECEDES = "precedes"
- TYPE_FOLLOWS = "follows"
-
- TYPES = { TYPE_RELATES => { :name => :label_relates_to, :sym_name => :label_relates_to, :order => 1, :sym => TYPE_RELATES },
- TYPE_DUPLICATES => { :name => :label_duplicates, :sym_name => :label_duplicated_by, :order => 2, :sym => TYPE_DUPLICATED },
- TYPE_DUPLICATED => { :name => :label_duplicated_by, :sym_name => :label_duplicates, :order => 3, :sym => TYPE_DUPLICATES, :reverse => TYPE_DUPLICATES },
- TYPE_BLOCKS => { :name => :label_blocks, :sym_name => :label_blocked_by, :order => 4, :sym => TYPE_BLOCKED },
- TYPE_BLOCKED => { :name => :label_blocked_by, :sym_name => :label_blocks, :order => 5, :sym => TYPE_BLOCKS, :reverse => TYPE_BLOCKS },
- TYPE_PRECEDES => { :name => :label_precedes, :sym_name => :label_follows, :order => 6, :sym => TYPE_FOLLOWS },
- TYPE_FOLLOWS => { :name => :label_follows, :sym_name => :label_precedes, :order => 7, :sym => TYPE_PRECEDES, :reverse => TYPE_PRECEDES }
- }.freeze
-
- validates_presence_of :issue_from, :issue_to, :relation_type
- validates_inclusion_of :relation_type, :in => TYPES.keys
- validates_numericality_of :delay, :allow_nil => true
- validates_uniqueness_of :issue_to_id, :scope => :issue_from_id
-
- validate :validate_issue_relation
-
- attr_protected :issue_from_id, :issue_to_id
-
- before_save :handle_issue_order
-
- def visible?(user=User.current)
- (issue_from.nil? || issue_from.visible?(user)) && (issue_to.nil? || issue_to.visible?(user))
- end
-
- def deletable?(user=User.current)
- visible?(user) &&
- ((issue_from.nil? || user.allowed_to?(:manage_issue_relations, issue_from.project)) ||
- (issue_to.nil? || user.allowed_to?(:manage_issue_relations, issue_to.project)))
- end
-
- def initialize(attributes=nil, *args)
- super
- if new_record?
- if relation_type.blank?
- self.relation_type = IssueRelation::TYPE_RELATES
- end
- end
- end
-
- def validate_issue_relation
- if issue_from && issue_to
- errors.add :issue_to_id, :invalid if issue_from_id == issue_to_id
- errors.add :issue_to_id, :not_same_project unless issue_from.project_id == issue_to.project_id || Setting.cross_project_issue_relations?
- #detect circular dependencies depending wether the relation should be reversed
- if TYPES.has_key?(relation_type) && TYPES[relation_type][:reverse]
- errors.add :base, :circular_dependency if issue_from.all_dependent_issues.include? issue_to
- else
- errors.add :base, :circular_dependency if issue_to.all_dependent_issues.include? issue_from
- end
- errors.add :base, :cant_link_an_issue_with_a_descendant if issue_from.is_descendant_of?(issue_to) || issue_from.is_ancestor_of?(issue_to)
- end
- end
-
- def other_issue(issue)
- (self.issue_from_id == issue.id) ? issue_to : issue_from
- end
-
- # Returns the relation type for +issue+
- def relation_type_for(issue)
- if TYPES[relation_type]
- if self.issue_from_id == issue.id
- relation_type
- else
- TYPES[relation_type][:sym]
- end
- end
- end
-
- def label_for(issue)
- TYPES[relation_type] ? TYPES[relation_type][(self.issue_from_id == issue.id) ? :name : :sym_name] : :unknow
- end
-
- def handle_issue_order
- reverse_if_needed
-
- if TYPE_PRECEDES == relation_type
- self.delay ||= 0
- else
- self.delay = nil
- end
- set_issue_to_dates
- end
-
- def set_issue_to_dates
- soonest_start = self.successor_soonest_start
- if soonest_start && issue_to
- issue_to.reschedule_after(soonest_start)
- end
- end
-
- def successor_soonest_start
- if (TYPE_PRECEDES == self.relation_type) && delay && issue_from && (issue_from.start_date || issue_from.due_date)
- (issue_from.due_date || issue_from.start_date) + 1 + delay
- end
- end
-
- def <=>(relation)
- TYPES[self.relation_type][:order] <=> TYPES[relation.relation_type][:order]
- end
-
- private
-
- # Reverses the relation if needed so that it gets stored in the proper way
- # Should not be reversed before validation so that it can be displayed back
- # as entered on new relation form
- def reverse_if_needed
- if TYPES.has_key?(relation_type) && TYPES[relation_type][:reverse]
- issue_tmp = issue_to
- self.issue_to = issue_from
- self.issue_from = issue_tmp
- self.relation_type = TYPES[relation_type][:reverse]
- end
- end
- end
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