[Solved] (Grid) Setup of footer attributes different from column attributes?

[Francisco]

Recently moved from a 2022 release to a 2025 release. We use titles for columns and footers pretty extensively and had to change the column attributes setup away from using templates, as I saw this issue in GitHub plus a post in this forum.

https://github.com/telerik/kendo-ui-core/issues/7174

https://www.telerik.com/forums/templates-in-column-attributes-no-longer-supported

Our new setup looks something like this:

{
    field: "someField", 
    atributes: (data) => {
        return { title: `${kendo.toString(data.someField, '0.#')}` };
    }
}

However, following the same method for footerAttributes doesn't yield the same result, in fact I get no title at all. I've tried two other approaches I've tried, and which also didn't work:

{
    field: "someField", 
    aggregates: ["sum"],
    footerAttributes: ({ someField }) => {
        return { title: `${kendo.toString(someField.sum, '0.#')}` };
    }
}

{
    field: "someField", 
    aggregates: ["sum"],
    footerAttributes: attributeHandler
}

attributeHandler: function (data) {
	return { title: `${kendo.toString(data.someField.sum)}` };
}