Redmine

        extend_object(row, item, object) if object.persisted?

  def build_object(row, item)

  end

  # Extends object with properties, that may only be handled after it's been

  # persisted.

  def extend_object(row, item, object)

  def extend_object(row, item, issue)

    build_relations(row, item, issue)

  end

  def build_relations(row, item, issue)

    IssueRelation::TYPES.keys.each do |type|

      has_delay = type == IssueRelation::TYPE_PRECEDES || type == IssueRelation::TYPE_FOLLOWS

      if decls = relation_values(row, "relation_#{type}")

        decls.each do |decl|

          unless decl[:matches]

            # Invalid relation syntax - doesn't match regexp

            next

          end

          if decl[:delay] && !has_delay

            # Invalid relation syntax - delay for relation that doesn't support delays

            next

          end

          relation = IssueRelation.new(

            "relation_type" => type,

            "issue_from_id" => issue.id

          )

          if decl[:other_id]

            relation.issue_to_id = decl[:other_id]

          elsif decl[:other_pos]

            if decl[:other_pos] > item.position

              add_callback(decl[:other_pos], 'set_relation', item.position, type, decl[:delay])

              next

            elsif issue_id = items.where(:position => decl[:other_pos]).first.try(:obj_id)

              relation.issue_to_id = issue_id

            end

          end

          relation.delay = decl[:delay] if decl[:delay]

          relation.save!

        end

      end

    end

    issue

  end

  def relation_values(row, name)

    content = row_value(row, name)

    return if content.blank?

    content.split(",").map do |declaration|

      declaration = declaration.strip

      # Valid expression:

      #

      # 123  => row 123 within the CSV

      # #123 => issue with ID 123

      #

      # For precedes and follows

      #

      # 123 7d    => row 123 within CSV with 7 day delay

      # #123  7d  => issue with ID 123 with 7 day delay

      # 123 -3d   => negative delay allowed

      #

      #

      # Invalid expression:

      #

      # No. 123 => Invalid leading letters

      # # 123   => Invalid space between # and issue number

      # 123 8h  => No other time units allowed (just days)

      #

      # See examples at Rubular http://rubular.com/r/mgXM5Rp6zK

      #

      match = declaration.match(/\A(?<is_id>#)?(?<id>\d+)(?:\s+(?<delay>-?\d+)d)?\z/)

      result = {

        :matches     => false,

        :declaration => declaration

      }

      if match

        result[:matches] = true

        result[:delay]   = match[:delay]

        if match[:is_id] and match[:id]

          result[:other_id] = match[:id]

        elsif match[:id]

          result[:other_pos] = match[:id].to_i

        else

          result[:matches] = false

        end

      end

      result

    end

  end

  def set_relation_callback(to_issue, from_position, type, delay)

    return if to_issue.new_record?

    from_id = items.where(:position => from_position).first.try(:obj_id)

    return unless from_id

    IssueRelation.create!(

      'relation_type' => type,

      'issue_from_id' => from_id,

      'issue_to_id'   => to_issue.id,

      'delay'         => delay

    )

    to_issue.reload

  end

<% @custom_fields.each do |field| %>

  <p>

    <label for="import_mapping_cf_<%= field.id %>"><%= field.name %></label>

    <%= mapping_select_tag @import, "cf_#{field.id}" %>

  </p>

<% end %>

<div class="splitcontent">

  <div class="splitcontentleft">

    <p>

      <label for="import_settings_mapping_parent_issue_id"><%= l(:field_parent_issue) %></label>

      <%= mapping_select_tag @import, 'parent_issue_id' %>

    </p>

    <p>

      <label for="import_settings_mapping_relation_duplicates"><%= l(:label_duplicates) %></label>

      <%= mapping_select_tag @import, 'relation_duplicates' %>

    </p>

    <p>

      <label for="import_settings_mapping_relation_duplicated"><%= l(:label_duplicated_by) %></label>

      <%= mapping_select_tag @import, 'relation_duplicated' %>

    </p>

    <p>

      <label for="import_settings_mapping_relation_blocks"><%= l(:label_blocks) %></label>

      <%= mapping_select_tag @import, 'relation_blocks' %>

    </p>

    <p>

      <label for="import_settings_mapping_relation_blocked"><%= l(:label_blocked_by) %></label>

      <%= mapping_select_tag @import, 'relation_blocked' %>

    </p>

  </div>

  <div class="splitcontentright">

    <p>

      <label for="import_settings_mapping_relation_relates"><%= l(:label_relates_to) %></label>

      <%= mapping_select_tag @import, 'relation_relates' %>

    </p>

    <p>

      <label for="import_settings_mapping_relation_precedes"><%= l(:label_precedes) %></label>

      <%= mapping_select_tag @import, 'relation_precedes' %>

    </p>

    <p>

      <label for="import_settings_mapping_relation_follows"><%= l(:label_follows) %></label>

      <%= mapping_select_tag @import, 'relation_follows' %>

    </p>

    <p>

      <label for="import_settings_mapping_relation_copied_to"><%= l(:label_copied_to) %></label>

      <%= mapping_select_tag @import, 'relation_copied_to' %>

    </p>

    <p>

      <label for="import_settings_mapping_relation_copied_from"><%= l(:label_copied_from) %></label>

      <%= mapping_select_tag @import, 'relation_copied_from' %>

    </p>

  </div>

</div>

  <fieldset class="box tabular collapsible collapsed">

    <legend onclick="toggleFieldset(this);"><%= l(:label_relations_mapping) %></legend>

    <div id="relations-mapping" style="display: none;">

      <%= render :partial => 'relations_mapping' %>

    </div>

  </fieldset>

  label_relations_mapping: Zuordnung von Beziehungen

  label_relations_mapping: Relations mapping

row;tracker;subject;parent;simple relation;delayed relation

1;bug;Root;;;

2;bug;Child 1;1;1,4;1 2d

3;bug;Grand-child;4;4;4 -1d

4;bug;Child 2;1;1;1 1d

row;tracker;subject;start;due;parent;follows

1;bug;2nd Child;2020-01-12;2020-01-20;3;2 1d

2;bug;1st Child;2020-01-01;2020-01-10;3;

3;bug;Parent;2020-01-01;2020-01-31;;

1;bug;3rd Child;2020-01-22;2020-01-31;3;1 1d

  def test_follow_relation

    import = generate_import_with_mapping('import_subtasks.csv')

    import.settings['mapping'] = {'project_id' => '1', 'tracker' => '1', 'subject' => '2', 'relation_relates' => '4'}

    import.save!

    one, one_one, one_two_one, one_two = new_records(Issue, 4) { import.run }

    assert_equal 2, one.relations.count

    assert one.relations.all? { |r| r.relation_type == 'relates' }

    assert one.relations.any? { |r| r.other_issue(one) == one_one }

    assert one.relations.any? { |r| r.other_issue(one) == one_two }

    assert_equal 2, one_one.relations.count

    assert one_one.relations.all? { |r| r.relation_type == 'relates' }

    assert one_one.relations.any? { |r| r.other_issue(one_one) == one }

    assert one_one.relations.any? { |r| r.other_issue(one_one) == one_two }

    assert_equal 3, one_two.relations.count

    assert one_two.relations.all? { |r| r.relation_type == 'relates' }

    assert one_two.relations.any? { |r| r.other_issue(one_two) == one }

    assert one_two.relations.any? { |r| r.other_issue(one_two) == one_one }

    assert one_two.relations.any? { |r| r.other_issue(one_two) == one_two_one }

    assert_equal 1, one_two_one.relations.count

    assert one_two_one.relations.all? { |r| r.relation_type == 'relates' }

    assert one_two_one.relations.any? { |r| r.other_issue(one_two_one) == one_two }

  end

  def test_delayed_relation

    import = generate_import_with_mapping('import_subtasks.csv')

    import.settings['mapping'] = {'project_id' => '1', 'tracker' => '1', 'subject' => '2', 'relation_precedes' => '5'}

    import.save!

    one, one_one, one_two_one, one_two = new_records(Issue, 4) { import.run }

    assert_equal 2, one.relations_to.count

    assert one.relations_to.all? { |r| r.relation_type == 'precedes' }

    assert one.relations_to.any? { |r| r.issue_from == one_one && r.delay == 2 }

    assert one.relations_to.any? { |r| r.issue_from == one_two && r.delay == 1 }

    assert_equal 1, one_one.relations_from.count

    assert one_one.relations_from.all? { |r| r.relation_type == 'precedes' }

    assert one_one.relations_from.any? { |r| r.issue_to == one && r.delay == 2 }

    assert_equal 1, one_two.relations_to.count

    assert one_two.relations_to.all? { |r| r.relation_type == 'precedes' }

    assert one_two.relations_to.any? { |r| r.issue_from == one_two_one && r.delay == -1 }

    assert_equal 1, one_two.relations_from.count

    assert one_two.relations_from.all? { |r| r.relation_type == 'precedes' }

    assert one_two.relations_from.any? { |r| r.issue_to == one && r.delay == 1 }

    assert_equal 1, one_two_one.relations_from.count

    assert one_two_one.relations_from.all? { |r| r.relation_type == 'precedes' }

    assert one_two_one.relations_from.any? { |r| r.issue_to == one_two && r.delay == -1 }

  end

  def test_parent_and_follows_relation

    import = generate_import_with_mapping('import_subtasks_with_relations.csv')

    import.settings['mapping'] = {

      'project_id'       => '1',

      'tracker'          => '1',

      'subject'          => '2',

      'start_date'       => '3',

      'due_date'         => '4',

      'parent_issue_id'  => '5',

      'relation_follows' => '6'

    }

    import.save!

    second, first, parent, third = assert_difference('IssueRelation.count', 2) { new_records(Issue, 4) { import.run } }

    # Parent relations

    assert_equal parent, first.parent

    assert_equal parent, second.parent

    assert_equal parent, third.parent

    # Issue relations

    assert IssueRelation.where(

      :issue_from_id => first.id,

      :issue_to_id   => second.id,

      :relation_type => 'precedes',

      :delay         => 1).present?

    assert IssueRelation.where(

      :issue_from_id => second.id,

      :issue_to_id   => third.id,

      :relation_type => 'precedes',

      :delay         => 1).present?

    # Checking dates, because they might act weird, when relations are added

    assert_equal Date.new(2020, 1,  1), parent.start_date

    assert_equal Date.new(2020, 1, 31), parent.due_date

    assert_equal Date.new(2020, 1,  1), first.start_date

    assert_equal Date.new(2020, 1, 10), first.due_date

    assert_equal Date.new(2020, 1, 12), second.start_date

    assert_equal Date.new(2020, 1, 20), second.due_date

    assert_equal Date.new(2020, 1, 22), third.start_date

    assert_equal Date.new(2020, 1, 31), third.due_date

  end