Redmine

  RECORD_LINK = {

    'CustomValue'  => -> (custom_value) { link_to_record(custom_value.customized) },

    'Document'     => -> (document)     { link_to(document.title, document_path(document)) },

    'Group'        => -> (group)        { link_to(group.name, group_path(group)) },

    'Issue'        => -> (issue)        { link_to_issue(issue, :subject => false) },

    'Message'      => -> (message)      { link_to_message(message) },

    'News'         => -> (news)         { link_to(news.title, news_path(news)) },

    'Project'      => -> (project)      { link_to_project(project) },

    'User'         => -> (user)         { link_to_user(user) },

    'Version'      => -> (version)      { link_to_version(version) },

    'WikiPage'     => -> (wiki_page)    { link_to(wiki_page.pretty_title, project_wiki_page_path(wiki_page.project, wiki_page.title)) }

  }

  def link_to_record(record)

    if link = RECORD_LINK[record.class.name]

      self.instance_exec(record, &link)

    end

  end

  ATTACHMENT_CONTAINER_LINK = {

    # Custom list, since project/version attachments are listed in the files

    # view and not in the project/milestone view

    'Project'      => -> (project)      { link_to(l(:project_module_files), project_files_path(project)) },

    'Version'      => -> (version)      { link_to(l(:project_module_files), project_files_path(version.project)) },

  }

  def link_to_attachment_container(attachment_container)

    if link = ATTACHMENT_CONTAINER_LINK[attachment_container.class.name] ||

              RECORD_LINK[attachment_container.class.name]

      self.instance_exec(attachment_container, &link)

    end

  end

<h2>

  <%= safe_join([link_to_attachment_container(@attachment.container), @attachment.filename].compact, ' » ') %>

</h2>

           :attachments, :enumerations,

           :custom_values, :custom_fields, :custom_fields_projects

  def test_link_to_record

    [

      [custom_values(:custom_values_007), '<a href="/projects/ecookbook">eCookbook</a>'],

      [documents(:documents_001),         '<a href="/documents/1">Test document</a>'],

      [Group.find(10),                    '<a href="/groups/10">A Team</a>'],

      [issues(:issues_001),               link_to_issue(issues(:issues_001), :subject => false)],

      [messages(:messages_001),           '<a href="/boards/1/topics/1">First post</a>'],

      [news(:news_001),                   '<a href="/news/1">eCookbook first release !</a>'],

      [projects(:projects_001),           '<a href="/projects/ecookbook">eCookbook</a>'],

      [users(:users_001),                 '<a class="user active" href="/users/1">Redmine Admin</a>'],

      [versions(:versions_001),           '<a title="07/01/2006" href="/versions/1">eCookbook - 0.1</a>'],

      [wiki_pages(:wiki_pages_001),       '<a href="/projects/ecookbook/wiki/CookBook_documentation">CookBook documentation</a>']

    ].each do |record, link|

      assert_equal link, link_to_record(record)

    end

  end

  def test_link_to_attachment_container

    field = ProjectCustomField.generate!(:name => "File", :field_format => 'attachment')

    project = projects(:projects_001)

    project_custom_value_attachment = new_record(Attachment) do

      project.custom_field_values = {field.id => {:file => mock_file}}

      project.save

    end

    news_attachment = attachments(:attachments_004)

    news_attachment.container = news(:news_001)

    news_attachment.save!

    [

      [project_custom_value_attachment, '<a href="/projects/ecookbook">eCookbook</a>'],

      [attachments(:attachments_002),   '<a href="/documents/1">Test document</a>'],

      [attachments(:attachments_001),   link_to_issue(issues(:issues_003), :subject => false)],

      [attachments(:attachments_013),   '<a href="/boards/1/topics/1">First post</a>'],

      [news_attachment,                 '<a href="/news/1">eCookbook first release !</a>'],

      [attachments(:attachments_008),   '<a href="/projects/ecookbook/files">Files</a>'],

      [attachments(:attachments_009),   '<a href="/projects/ecookbook/files">Files</a>'],

      [attachments(:attachments_003),   '<a href="/projects/ecookbook/wiki/Page_with_an_inline_image">Page with an inline image</a>'],

    ].each do |attachment, link|

      assert_equal link, link_to_attachment_container(attachment.container)

    end

  end

    assert_select 'h2', :text => "#{issue.tracker} ##{issue.id} » testfile.txt"