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Notifications

Depending on your instance needs regarding notifications, you might want to customize the configuration values provided by the invenio-notifications module.

Specifically, we are going to have a look at templates and the following variables:

Templates

In order to provide your own customized templates or override parts of existing ones, templates can be placed in the my_site/templates/semantic-ui/invenio_notifications folder. The file name then has to match the base template name (e.g. community-submission.submitted.jinja).

Let's have a look at a base template and then customize parts of it for our own needs.

Assume a notification context like this:

{
    "request": {
        "links": {
            "self_html": "<link to the request>",
        },
        "created_by": {
            "id": 3,
            "username": "Chris the Creator",
        },
        "receiver": {
            "id":  "3fc4fcaa-ce2c-4ec7-97cd-4b29ca204035",
            "metadata": {
                "title": "Notification Community",
            },
            "links": {
                "self_html": "<link to the community>",
            }
        },
        "topic": {
            "id": "49e72dea-f14a-4774-a52d-a3d581fed86e",
            "metadata": {
                "title": "My Submitted Record",
            },
        }
    }
}

{# notifications/community-submission.submitted.jinja #}

{%- block subject -%}
New record submission for your community {{ notification.context.get("request").get("receiver").get("metadata").get("title") }} submitted by {{ notification.context.get("request").get("created_by").get("username") }}
{%- endblock subject -%}

{%- block html_body -%}
<p>The record "{{ notification.context.get("request").get("topic").get("metadata").get("title") }}" was submitted to your community {{ notification.context.get("request").get("receiver").get("metadata").get("title") }} by {{ notification.context.get("request").get("created_by").get("username") }}.</p>

<a href="{{ notification.context.get("request").get("links").get("self_html") }}" class="button">Review the request</a>
{%- endblock html_body -%}

{%- block plain_body -%}
The record "{{ notification.context.get("request").get("topic").get("metadata").get("title") }}" was submitted to your community {{ notification.context.get("request").get("receiver").get("metadata").get("title") }} by {{ notification.context.get("request").get("created_by").get("username") }}.

Review the request: {{ notification.context.get("request").get("links").get("self_html") }}
{%- endblock plain_body -%}

We are pretty happy with most of the content, but want to override the html_body to include a link to the community and all requests. To do this, we will create a file with the same name and extend the base template.

{% extends "invenio_notifications/community-submission.submitted.html" %}

{% block html_body %}

<p>The record "{{ notification.context.get("request").get("topic").get("metadata").get("title") }}" was submitted to your community {{ notification.context.get("request").get("receiver").get("metadata").get("title") }} by {{ notification.context.get("request").get("created_by").get("username") }}.</p>

<a href="{{ notification.context.get("request").get("receiver").get("links").get("self_html") }}" class="button">Check out the community"</a>

<a href="{{ notification.context.get("request").get("links").get("self_html") }}" class="button">Review the request</a>

<a href="{{ notification.context.get("request").get("receiver").get("links").get("self_html") + "/requests" }}" class="button">Check out all community requests</a>


{% endblock %}

NOTIFICATIONS_BACKENDS

This config variable allows to specify the available backends. For instance, you can provide an implementation of your institute specific tool of communication and send notifications via this backend. For this, simply extend the NotificationBackend class and implement the send method.

from invenio_notifications.backends import JinjaTemplateLoaderMixin, NotificationBackend,

class InstitutationalBackend(NotificationBackend, JinjaTemplateLoaderMixin):
    """Base class for notification backends."""

    id = "institutional-backend"
    """Unique id of the backend."""

    def send(self, notification, recipient):
        """Send the notification message as markdown to a user."""
        template = self.render_template(notification=notification, recipient=recipient)
        institutation_communication_tool.send_message(user_id=recipient.data["id"], template["md_body"])

This backend can now be specified (e.g. in invenio.cfg):

NOTIFICATION_BACKENDS = {
    EmailNotificationBackend.id: EmailNotificationBackend,
    InstitutationalBackend.id: InstitutationalBackend,
}

NOTIFICATIONS_BUILDERS

This config variable defines which builder class should be used for a specific notification type. Let us assume that you want to override who will get notified in the event of a community record submission (community curator and owner) and add the previously defined backend (so recipients will get notified via whatever the base class has defined and via the InstitutationalBackend). To do this, we will create a custom builder, which will inherit most of the properties from the existing base class.

from institutational_package.notifications import InstitutationalBackend
from invenio_communities.notifications.generators import CommunityMembersRecipient
from invenio_rdm_records.notifications.builders import CommunityInclusionSubmittedNotificationBuilder

class CustomSubmissionBuilder(CommunityInclusionSubmittedNotificationBuilder):

    # properties not overwritten will keep their base value
    recipients = [
        CommunityMembersRecipient(key="request.receiver", roles=["curator", "owner"]),
    ]

    recipient_backends = CommunityInclusionSubmittedNotificationBuilder.recipient_backends + [
        InstitutationalBackend(),
    ]

This builder can now be specified (e.g. in invenio.cfg):

NOTIFICATIONS_BUILDERS = {
    CustomSubmissionBuilder.type: CustomSubmissionBuilder,
}