I'm trying to add live update functionality to a statistics page using Turbo. The page has a user-set date range with a simple filter using url params. The value of each stat is determined by summing values of a collection of objects (matched by the date range).
Everytime an object updates in the db, the stats need to refresh if they relate to this object (i.e. the object has a date_created within the date range that the user has selected on the filter).
In the controller
@things = Thing.where(:created_at => params[start_date]..params[end_date])
In the view
<%= turbo_stream_from "profit" %>
<%= render 'profit_card', things:@things %>
The rendered partial (profit_card)
Total Profit: <%= things.sum(&:profit) %>
What I would like to add to the Thing model is
after_update_commit { broadcast_replace_to "profit", partial: "profit_card", locals: {things: ???} }
The problem is that there is no way of putting the right collection @things into the above line. The specific @things are filtered in the controller depending on the date range selected.
If the filter only selected a single date (and not a range), this could be done like this:
broadcast_replace_to "profit_#{thing.created_at}", partial: "profit_card", locals: {Thing.where(created_at: self.created_at)}
And then in the view
<%= turbo_stream_from "profit_#{selected_date_from_params}" %>
This however doesn't work with date ranges, as there are too many combinations.
Is there another way to achieve this functionality using turbo?
Thanks very much!