Error with SORT filter on module items forloop

[danjamescrosby]

I am building a custom module that has a repeater group where each item in the group is a version of our software with relevant data about it (module fields structure below for reference).

In the module HTML/HUBL I'm trying to sort the items in the module repeater field. Every item has a value in the sort field yet I get an error saying "Error:Invalid argument in 'sort': 3rd argument with value 'minor_version' must be a valid attribute of every item in the list".

This is the relevant part of the module that causes the error:

{% set previewReleases = [] %}{% set stableReleases = [] %}
{% for item in module.releases|sort(True, False, 'minor_version') %}
  {% if item.version_name is string_containing "-preview" or item.version_name is string_containing "-rc" or item.version_name is string_containing "-alpha" %}
    {% do previewReleases.append(item) %}
  {% else %}
    {% do stableReleases.append(item) %}
  {% endif %}
{% endfor %}

Does anyone know why this would be erroring?

Module field structure

• Releases (Field group) - releases
  • Version name (Text) - version_name
  • Major version (Text) - major_version
  • Minor version (Text) - minor_version
  • LTS (Boolean) - lts
  • Date (Date) - date
  • Release notes (URL) - release_notes
  • Platforms (Field group) - platforms
    • Platform (Choice) - platform
      • Binary (Field group) - binary
        • URL (URL) - url
        • Platform name (Text) - platform_name

[danjamescrosby]

I think I've identified the issue with this, I can't see why this would be expected behaviour so may be a bug.

To recreate the issue, create a global module as per this screenshot (both the top level and nested field groups are set as repeaters):

This results in the error:

It seems that having a boolean field and a nested field group causes the issue. If I change the boolean field to a choice field the error goes away. Or if I remove the second field group the error goes away.

[stefen]

@danjamescrosby my first thought is that field is empty in HubDB in 1 or more rows. Have you checked that?

[danjamescrosby]

@stefen it's a global module with a repeater field rather than a HubDB table. And I've edited the global content for it and checked every instance in the repeater has a value for that field which it does.

What's a bit weird is I've created a test module with just a repeater group and the one field I want to sort by to test the functionality works and it works absolutely fine.

I think I'll recreate the module from scratch and see if it helps!