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Magnolia 5.7 reached extended end of life on May 31, 2022. Support for this branch is limited, see End-of-life policy. Please note that to cover the extra maintenance effort, this EEoL period is a paid extension in the life of the branch. Customers who opt for the extended maintenance will need a new license key to run future versions of Magnolia 5.7. If you have any questions or to subscribe to the extended maintenance, please get in touch with your local contact at Magnolia.

This page describes how to configure a content app to be privacy-aware, for example in the context of GDPR regulations. The Contacts app, a Magnolia demo content app, is an example of an app adapted to comply with privacy regulations. An existing content app can be made privacy-aware almost on-the-fly. You just need to configure the app in accordance with the following guidelines.

Add mgnl:visitorReference to content node type

Define a privacy-related node type the app is expected to handle. In the case of the Contacts app it is the mgnl:visitorReference (mixin):

/mgnl-nodetypes/magnolia-privacy-contact-nodetype.xml
<nodeTypes
    xmlns:rep="internal"
    xmlns:nt="http://www.jcp.org/jcr/nt/1.0"
    xmlns:mix="http://www.jcp.org/jcr/mix/1.0"
    xmlns:mgnl="http://www.magnolia.info/jcr/mgnl"
    xmlns:jcr="http://www.jcp.org/jcr/1.0">

  <nodeType name="mgnl:privacyContact" isMixin="false" hasOrderableChildNodes="true" primaryItemName="">
    <supertypes>
      <supertype>mgnl:contact</supertype>
      <supertype>mgnl:visitorReference</supertype>
    </supertypes>
  </nodeType>

</nodeTypes>

(warning) Please be aware that the mgnl:visitorReference node type has a mandatory property called visitorId.  Without it you cannot save a  mgnl:visitorReference node. See below its definition in the Visitor manager submodule:

/mgnl-nodetypes/magnolia-privacy-nodetypes.xml
  <nodeType name="mgnl:visitorReference" isMixin="true" hasOrderableChildNodes="true" primaryItemName="">
    <propertyDefinition name="visitorId" requiredType="String" autoCreated="false" mandatory="true" onParentVersion="COPY" protected="false" multiple="false"/>
  </nodeType>

The Visitor manager submodule is where most of the configuration of the Privacy module is done.

Use a dedicated subapp class and field

In your app use a dedicated privacy-enabling subapp class and field(s). In the Contacts app this is done with the info.magnolia.privacy.sample.contentapp.PrivacyAwareContactDetailSubapp class (line 1), the visitorId field (from line 9). The field is linked to the visitors repository (line 11), a dedicated repository which stores visitor consent information:

privacy-sample/decorations/contacts/apps/contacts.subApps.detail.yaml
subAppClass: info.magnolia.privacy.sample.contentapp.PrivacyAwareContactDetailSubapp
editor:
  nodeType:
    name: mgnl:privacyContact
  form:
    tabs:
      personal:
        fields:
          'visitorId':
            class: info.magnolia.ui.form.field.definition.SelectFieldDefinition
            repository: visitors
            path: /
            textInputAllowed: true
            filteringMode: CONTAINS
            pageLength: 100
            valueProperty: visitorId
            labelProperty: visitorId

(info) Lines 3 and 4 make sure the app (subapp) uses the newly defined node type. Because of MGNLPRIV-35 we actually don't set the mgnl:privacyContact node type in the Detail subapp's definition decoration.

The field label "Visitor" is defined in the message bundle of the privacy-ui module:

privacy-ui/i18n/visitors_backend_en.properties
fields.visitorId.label=Visitor