Novu•13mo ago

If I use topic subscription, is there a group selector in the digest?

Hi I am using topic subscription, Is it possible inside the digest to get a "groupBy" topic for the email Template? Criteria should be to see only the related Message to the subscriberID

12 Replies

Pawan Jain•13mo ago

Hi @gigo1980 Digest depends on workflow + subsciberId + custom digest key (if any). Since topic is just group of subscribers. When you trigger a workflow to a topic, internally it is triggered to all subscribers of topic. groupBy helper is used to group payload events by key name

Pawan Jain•13mo ago

read more about groupBy helper https://docs.novu.co/content-creation-design/handlebars-helpers#groupby

Novu

Handlebars & Helpers - Novu

gigo1980OP•13mo ago

What will be then here the right groupBy, If I would group by "from"?

Hallo {{subscriber.firstName}}

{{#if step.digest}}
du hast {{step.total_count}} neue Nachrichten.

{{#each step.events}}
<li>{{this.from}}: {{this.message}}</li>
{{/each}}
{{/if}}

Hallo {{subscriber.firstName}}

{{#if step.digest}}
du hast {{step.total_count}} neue Nachrichten.

{{#each step.events}}
<li>{{this.from}}: {{this.message}}</li>
{{/each}}
{{/if}}

Pawan Jain•13mo ago

if your payload is like this Event 1

{
  "from": "Pawan",
  "age": "30"
}

{
  "from": "Pawan",
  "age": "30"
}

Event 2

{
  "from": "Pawan",
  "age": "32"
}

{
  "from": "Pawan",
  "age": "32"
}

Event 3

{
  "from": "Jain",
  "age": "31"
}

{
  "from": "Jain",
  "age": "31"
}

then this email template

Hallo {{subscriber.firstName}}

{{#if step.digest}}
du hast {{step.total_count}} neue Nachrichten.

{{#each (groupBy step.events "from") }}
<h3>from: {{key}}<h3>
  {{#each items}}
    <li>{{age}}</li>
  {{/each}}
{{/each}}
{{/if}}

Hallo {{subscriber.firstName}}

{{#if step.digest}}
du hast {{step.total_count}} neue Nachrichten.

{{#each (groupBy step.events "from") }}
<h3>from: {{key}}<h3>
  {{#each items}}
    <li>{{age}}</li>
  {{/each}}
{{/each}}
{{/if}}

will give you this result

Pawan Jain•13mo ago

Pawan Jain•13mo ago

in this line Hallo Pawan du hast 3 neue Nachrichten. Pawan is picked from subscriber.firstName @gigo1980 let me know if I am able to explain correctly

gigo1980OP•13mo ago

Ok great that works so far, is there also an way to aggreagate something like in linked in. So that I can see the persons on my side, people how have written something, next birthdays and so on. Can I do this in one Workflow or does I need for each "kind" and seperare workflow and nees something like an aggregation workflow?

gigo1980OP•13mo ago

Is there something like arrayLength? Or is there a way to contribute custom handlebar functions to you project? {{arrayLength yourArray}}

Handlebars.registerHelper('arrayLength', function(array) {
  return array.length;
});

Handlebars.registerHelper('arrayLength', function(array) {
  return array.length;
});

gigo1980OP•13mo ago

https://github.com/novuhq/novu/blob/next/packages/application-generic/src/usecases/compile-template/compile-template.usecase.ts <-- I think this might the right place for it

GitHub

novu/packages/application-generic/src/usecases/compile-template/com...

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Novu_Bot•13mo ago

@gigo1980, you just advanced to level 2!

Pawan Jain•13mo ago

@gigo1980 Yes this is the correct place at code, where a new handlebar helper can be added try this in our email editor

Total number of fruits is {{fruits.length}}

Total number of fruits is {{fruits.length}}

where payload is

{
  "fruits" : ["Orange", "Apple", "Pineapple" ]
}

{
  "fruits" : ["Orange", "Apple", "Pineapple" ]
}

Linear•13mo ago

Issue DVRL-97 created.

DVRL-97 - document how to use array length in email editor

Status

Triage

DevRel

Gaming

Programming

If I use topic subscription, is there a group selector in the digest?