Meteor Spacebars - {{#each}} params

Question

This is my code:

HTML

Card 1:

<!-- Shopping list -->
<div id='shopping' class='card'>
  {{#each task}}
  <ul class="card__task">
    <li>{{taskText}}</li>
    <i class="fa fa-minus delete-task"></i>
  </ul>
  {{/each}}
</div>

Card 2:

<!-- Medicine list -->
<div id='medicine' class='card'>
  {{#each task}}
  <ul class="card__task">
    <li>{{taskText}}</li>
    <i class="fa fa-minus delete-task"></i>
  </ul>
  {{/each}}
</div>

template.helper

  task: function() {
    return Tasks.find({}, {
      sort: {
        createdAt: -1
      }
    });
  }

tasks collection example

Ex.1:

   ...
  "taskGroup": "medicine",
  "taskText": "medicine task 1",
   ...

Ex.2:

   ...
  "taskGroup": "shopping",
  "taskText": "shopping task 1",
   ...

So, I got a collection where I store tasks with the taskGroup corresponding to the textarea input id. For now each iterates over every task that I have in my tasks collection and those 2 cards show all tasks.

Question:

How can tell each block to only iterate over tasks that have taskGroup equal to this cards id?

Something like:

  task: function() {
    return Tasks.find({
    taskGroup: *the card where each block is located*.getAttribute("id");
    }, {
      sort: {
        createdAt: -1
      }
    });
  }

Answer 1

You can create a blaze helper that does the filter by the taskGroup

tasks: function(taskGroup) {
return Tasks.find({
taskGroup: taskGroup;
}, {
  sort: {
    createdAt: -1
  }
});

}

That way you can call it on the template like this

{{#each tasks 'medicine'}}
...
{{/each}}