Redmine > Internal error > Template::Error from ASCII\-8BIT to UTF\-8\ の対処

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Redmine でバージョンアップ後、カスタムクエリの画面を表示するとInternal error と無慈悲に表示された。

Internal error

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ログを見ろって事なので、redmine\htdocs\log\production.log　を確認
内容は以下

Started GET "/redmine/projects/aaa/issues?query_id=93" for 127.0.0.1 at 2017-11-22 15:41:40 +0900
Processing by IssuesController#index as HTML
  Parameters: {"query_id"=>"93", "project_id"=>"aaa"}
  Current user: user (id=1)
  Rendered queries/_filters.html.erb (70.0ms)
  Rendered queries/_query_form.html.erb (71.0ms)
  Rendered issues/index.html.erb within layouts/base (78.0ms)
Completed 500 Internal Server Error in 289ms (ActiveRecord: 109.0ms)

ActionView::Template::Error ("\xE7" from ASCII-8BIT to UTF-8):
     9: $(document).ready(function(){
    10:   initFilters();
    11:   <% query.filters.each do |field, options| %>
    12:   addFilter("<%= field %>", <%= raw_json query.operator_for(field) %>, <%= raw_json query.values_for(field) %>);
    13:   <% end %>
    14: });
    15: <% end %>
  app/helpers/application_helper.rb:1244:in `raw_json'
  app/views/queries/_filters.html.erb:12:in `block (2 levels) in _app_views_queries__filters_html_erb__591453197_90781044'
  app/views/queries/_filters.html.erb:11:in `each'
  app/views/queries/_filters.html.erb:11:in `block in _app_views_queries__filters_html_erb__591453197_90781044'
  app/views/queries/_filters.html.erb:1:in `_app_views_queries__filters_html_erb__591453197_90781044'
  app/views/queries/_query_form.html.erb:10:in `_app_views_queries__query_form_html_erb__74269014_90713952'
  app/views/issues/index.html.erb:11:in `block in _app_views_issues_index_html_erb___412293273_90609240'
  app/views/issues/index.html.erb:10:in `_app_views_issues_index_html_erb___412293273_90609240'
  app/controllers/issues_controller.rb:51:in `block (2 levels) in index'
  app/controllers/issues_controller.rb:46:in `index'
  lib/redmine/sudo_mode.rb:63:in `sudo_mode'

"\xE7" from ASCII-8BIT to UTF-8　でエラーになっている模様。

以下に同じ現象の方がいましたので参考にさせていただきました。
Redmine カスタムクエリが500 ActionView::Template::Error ("XXX" from ASCII-8BIT to UTF-8) になるときの対処方法 - Qiita

対応

application_helper.rb

htdocs\app\helpers\application_helper.rb

  # Helper to render JSON in views
  def raw_json(arg)
    arg.to_json.to_s.gsub('/', '\/').html_safe
  end

を以下に変更（１行追加）

  # Helper to render JSON in views
  def raw_json(arg)
    arg = force_utf8_strings(arg)      # add
    arg.to_json.to_s.gsub('/', '\/').html_safe
  end

同ファイル htdocs\app\helpers\application_helper.rb の末尾、privateエリアに以下のようにforce_utf8_stringsを追加。
force_utf8_stringsは\htdocs\app\models\setting.rbに存在する関数をコピー

private
  def wiki_helper
  end
.
.
  def remove_double_quotes(identifier)
  end
.

  def force_utf8_strings(arg)
    if arg.is_a?(String)
      arg.dup.force_encoding('UTF-8')
    elsif arg.is_a?(Array)
      arg.map do |a|
        force_utf8_strings(a)
      end
    elsif arg.is_a?(Hash)
      arg = arg.dup
      arg.each do |k,v|
        arg[k] = force_utf8_strings(v)
      end
      arg
    else
      arg
    end
  end

queries_helper.rb

上記までで一度実行します。
今度は違うエラーが出ました。

ActionView::Template::Error (incompatible character encodings: ASCII-8BIT and UTF-8):
    31:   <%= form_tag(_project_issues_path(@project, :format => 'csv'), :method => :get, :id => 'csv-export-form') do %>
    32:   <%= query_as_hidden_field_tags(@query) %>
    33:   <p>
    34:     <label><%= radio_button_tag 'c[]', '', true %> <%= l(:description_selected_columns) %></label><br />
    35:     <label><%= radio_button_tag 'c[]', 'all_inline' %> <%= l(:description_all_columns) %></label>
    36:   </p>
    37:   <p>
  app/views/issues/index.html.erb:34:in `block in _app_views_issues_index_html_erb___619688709_82056480'
  app/views/issues/index.html.erb:31:in `_app_views_issues_index_html_erb___619688709_82056480'
  app/controllers/issues_controller.rb:51:in `block (2 levels) in index'
  app/controllers/issues_controller.rb:46:in `index'
  lib/redmine/sudo_mode.rb:63:in `sudo_mode'

\htdocs\app\helpers\queries_helper.rb

  # Returns the query definition as hidden field tags
  def query_as_hidden_field_tags(query)
    tags = hidden_field_tag("set_filter", "1", :id => nil)

    if query.filters.present?
      query.filters.each do |field, filter|
        tags << hidden_field_tag("f[]", field, :id => nil)
        tags << hidden_field_tag("op[#{field}]", filter[:operator], :id => nil)
        filter[:values].each do |value|
          tags << hidden_field_tag("v[#{field}][]", value, :id => nil)
        end
      end
    else
      tags << hidden_field_tag("f[]", "", :id => nil)
    end
    query.columns.each do |column|
      tags << hidden_field_tag("c[]", column.name, :id => nil)
    end
    if query.totalable_names.present?
      query.totalable_names.each do |name|
        tags << hidden_field_tag("t[]", name, :id => nil)
      end
    end
    if query.group_by.present?
      tags << hidden_field_tag("group_by", query.group_by, :id => nil)
    end
    if query.sort_criteria.present?
      tags << hidden_field_tag("sort", query.sort_criteria.to_param, :id => nil)
    end

    tags = force_utf8_strings(tags)      # add 2017/11/22 sugasaki

    tags
  end

application_helper.rbと同様にqueries_helper.rbの末尾に以下を追加します。

  private

  def force_utf8_strings(arg)
    if arg.is_a?(String)
      arg.dup.force_encoding('UTF-8')
    elsif arg.is_a?(Array)
      arg.map do |a|
        force_utf8_strings(a)
      end
    elsif arg.is_a?(Hash)
      arg = arg.dup
      arg.each do |k,v|
        arg[k] = force_utf8_strings(v)
      end
      arg
    else
      arg
    end
  end

まとめ

変更したファイルは以下です。

• \htdocs\app\helpers\application_helper.rb
• \htdocs\app\helpers\queries_helper.rb

上記のファイル＋\htdocs\app\models\setting.rbに
force_utf8_strings関数が存在する状態になりましたが、
これが問題となるのは次のバージョンUP時でしょうか。

それまで覚えておきましょう。