There is a companion library for Fulcro called Fulcro RAD that has many such things. I think it's recommended that you get familiar with at least the first four chapters or so of Fulcro before using RAD. https://book.fulcrologic.com/RAD.html https://www.youtube.com/watch?v=P2up8qcDmJs

Welcome to Fulcro! Is creating the widget your way of learning Fulcro or are you building a F. based app and feel the need for such a widget? I think it is much easier to learn it by building actual apps, that is what is made for. I do not really understand what a reusable filter widget is. It must be aware of the data and how to filter it, no? As @UPWHQK562 said, it is better to learn raw fulcro first (I recommend including my https://github.com/fulcro-community/fulcro-exercises in that :)) but RAD has actually good answers to your question, though it also introduce a new concept, attributes, to make it smooth. RAD reports can have filters. They store the filter data together with the report's data, i.e. in the component that both has the data to filter and needs to filter them. Run https://github.com/fulcrologic/fulcro-rad-demo and see how it looks. Explore it with Fulcro Inspect.

Thank you guys. I'll take a look on RAD.

I call a widget a component with it's own state that can be accessed from the outside, in this case a filters widget might track the state of some checkbox filters and some select filters, so that you can just use it to create a new page, lets say a table, and control the data that the table shows with the state of the filter.

So a page would be a composition of this reusable widgets, in this case to control what data is shown

You can compose also a searchbar

like this for example: https://github.com/redux-mvc/core/blob/master/src/Examples/TodoMVC/TodoFilter/View.js

The TodoFilter folder is what i call a "widget" or reusable module

Ah. What do you mean by "reusable"? It can only filter todos so you can not reuse it on a CustomerList or SalesReport?

BTW have you seen https://github.com/fulcrologic/fulcro/blob/develop/src/todomvc/fulcro_todomvc/ui.cljs?

I'll take a look thanks. Yes this is somewhat mixed, sorry for the bad example. Thought It is true that the TodoFilter is coupled to the todos in this case, to make it completely reusable the todos dependency (data) can be extracted either through props or with your concept of identity. The important thing is to make it general so it can be rendered many times with its own filter state so it can be reused

I'll go into all the examples that you gave thanks