How to Filter a Dropdown Menu with Another Dropdown Menu?

[Waleed]

I have a question about DASH;
How can I filter a dropdown menu by another one?

For example, if I have a revenue breakdown dashboard in the which there are dropdown menu for product categories and another dropdown menu for products…how can I show only the relevant products in the products dropdown menu when selecting a given product categories from the other dropdown menu.

Not knowing this is the main reason I prefer to use other tools!

Thanks

[Wabiloo]

Seems fairly simple. Two dcc.Dropdown, with a callback reacting to the value change of the first one to populate the options of the second.

There are examples close to it in:

• Dropdown | Dash for Python Documentation | Plotly
• Part 3. Basic Callbacks | Dash for Python Documentation | Plotly (with radio buttons instead of dropdowns, but that’s the same principle)

[Waleed]

Thanks very much