Customs email headers and/or subjects tags

XioNoX · 25 Junio, 2014 20:24

Hi!

To be able to sort automatically notification emails sent by Discourse, it would be great if they could have customs headers (or a subject tag) based on the message’s content/content:

For example, here is a list of headers Bugzilla sends with each notification email:

X-Bugzilla-Reason: CC AssignedTo
X-Bugzilla-Type: dep_changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Classification: Other
X-Bugzilla-ID: 1014331
X-Bugzilla-Product: mozilla.org
X-Bugzilla-Component: Server Operations
X-Bugzilla-Version: other
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: foobar@email.com
X-Bugzilla-Status: RESOLVED
X-Bugzilla-Resolution: FIXED
X-Bugzilla-Priority: –
X-Bugzilla-Assigned-To: email@email.com
X-Bugzilla-Target-Milestone: —
X-Bugzilla-Flags:
X-Bugzilla-OS: Linux
X-Bugzilla-Changed-Fields: Status Resolution
X-Bugzilla-Changed-Field-Names: bug_status resolution

Thanks!

downey · 25 Junio, 2014 20:55

lib/email/sender.rb

main


      
                 SiteSetting.secure_uploads_max_email_embed_image_size_kb.kilobytes
              return
            end
            true
          end
          
          #
          # Two behaviors in the mail gem collide:
          #
          #  1. Attachments are added as extra parts at the top level,
          #  2. When there are both text and html parts, the content type is set
          #     to 'multipart/alternative'.
          #
          # Since attachments aren't alternative renderings, for emails that contain
          # attachments and both html and text parts, some coercing is necessary.
          #
          # When there are alternative rendering and attachments, this method causes
          # the top level to be 'multipart/mixed' and puts the html and text parts
          # into a nested 'multipart/alternative' part.
          #
          # Due to mail gem magic, @message.text_part and @message.html_part still

Se llama desde:

github.com/discourse/discourse

lib/email/sender.rb

main


      
            # to the array of values for the header.
            @message.header[key] = nil
            @message.header[key] = our_value
          end
          
          value = header_value(key)
          
          # Remove Auto-Submitted header for group private message emails, it does
          # not make sense there and may hurt deliverability.
          #
          # From https://www.iana.org/assignments/auto-submitted-keywords/auto-submitted-keywords.xhtml:
          #
          # > Indicates that a message was generated by an automatic process, and is not a direct response to another message.
          @message.header[key] = nil if key.downcase == "auto-submitted" && smtp_group_id
          
          # Replace reply_key in custom headers or remove
          if value&.include?("%{reply_key}")
            # Delete old header first or else the same header will be added twice
            @message.header[key] = nil
            @message.header[key] = value.gsub!("%{reply_key}", reply_key) if reply_key.present?
          end

Intentaré obtener más detalles del equipo de Discourse sobre cómo se pretende utilizar la configuración y qué valores se podrían sustituir en las cabeceras personalizadas.

mattdm · 8 Enero, 2022 16:31

@simon Compara

github.com/discourse/discourse

lib/email/message_builder.rb

c0d72ec3d


      
                # No point in adding a reply-to header if it is going to be identical
                # to the from address/alias. If the from option is not present, then
                # the default reply-to address is used.
                result['Reply-To'] = from_value if from_value != alias_email(@opts[:from])
              end
            end
          
            result.merge(MessageBuilder.custom_headers(SiteSetting.email_custom_headers))
          end
          
          def self.custom_headers(string)
            result = {}
            string.split('|').each { |item|
              header = item.split(':', 2)
              if header.length == 2
                name = header[0].strip
                value = header[1].strip
                result[name] = value if name.length > 0 && value.length > 0
              end
            } unless string.nil?
            result

con

github.com/discourse/discourse

lib/email/message_builder.rb

c0d72ec3d


      
                elsif SiteSetting.unsubscribe_via_email_footer
                  "unsubscribe_link_and_mail"
                else
                  "unsubscribe_link"
                end
                @template_args[:unsubscribe_instructions] = I18n.t(unsubscribe_string, @template_args)
              end
            end
          end
          
          def subject
            if @opts[:template] &&
                TranslationOverride.exists?(locale: I18n.locale, translation_key: "#{@opts[:template]}.subject_template")
              augmented_template_args = @template_args.merge({
                site_name: @template_args[:email_prefix],
                optional_re: @opts[:add_re_to_subject] ? I18n.t('subject_re') : '',
                optional_pm: @opts[:private_reply] ? @template_args[:subject_pm] : '',
                optional_cat: @template_args[:show_category_in_subject] ? "[#{@template_args[:show_category_in_subject]}] " : '',
                optional_tags: @template_args[:show_tags_in_subject] ? "#{@template_args[:show_tags_in_subject]} " : '',
                topic_title: @template_args[:topic_title] ? @template_args[:topic_title] : '',
              })

Hay cierta complejidad con las plantillas frente a la configuración email_subject que no entiendo completamente; parece que esta última no se usa si hay una plantilla, ¡pero no estoy seguro de cuándo no hay una plantilla! Pero aparte de eso, lo básico es que si la función que construyó las cabeceras personalizadas usara el mismo sistema de plantillas, esto funcionaría y las cabeceras personalizadas podrían tener información dinámica útil.

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Customs email headers and/or subjects tags

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