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Anonymous
Not applicable

Cascading Dropdown in Model-driven App Form

With all the customization options in powerapps, it seems as though a cascading dropdown in a model-driven app form should be easy. 

 

Looking for a way to filter regions - the user selects a country, and then the regions dropdown only shows regions in that country (If the user selects USA, regions dropdown shows US states, if the user selects Canada, regions dropdown shows Canadian provinces)

 

Thanks!

2 ACCEPTED SOLUTIONS

Accepted Solutions
EricRegnier
Most Valuable Professional
Most Valuable Professional

Hi @Tiamo_Liu,

There are several tricks to get that work as per below, but unfortunately cascading optionsets are not supported out-of-the-box.

  1. Use entities instead. This is always my preference as entities give more flexibility, especially if eventually you need more properties/fields to the drop down items (e.g. Display Order). Using entities, you can filter out-of-the-box the related drop down/lookup/list on the form.
  2. Define the values of your optionset items with a prefix, then with JavaScript, filter the child dropdown based on the selected parent. For example:
    1. Parent optionset:
      • item 1: 11001
      • item 2 11002
    2. Child optionset:
      1. item 1: 11001001
      2. item 2: 11001002
      3. item 3: 11002001
      4. item 4: 11002002

Hope this helps

View solution in original post

EricRegnier
Most Valuable Professional
Most Valuable Professional

Thanks @PowerBi-Rick for this 🙂 Yup this was always possible since CRM 2011 I believe, but it's with lookups not choices (previously called option sets). We'll need JS for choices. Also, referring to your example, need additional logic to prevent contact from getting selected first and/or clear the contact if the company is changed.

 

For choices, up to now you'll need JavaScript code to achieve this. A tip is to define the values of your choice items with a prefix, then with JavaScript, filter the child dropdown based on the selected parent. For example:

  1. Parent choice:
    • item 1: 11001
    • item 2 11002
  1. Child choice:
    • item 1: 11001001
    • item 2: 11001002
    • item 3: 11002001
    • item 4: 11002002

 

There could also be existing control from the PCG gallery that might be worth to look at: https://pcf.gallery/

Cheers!

View solution in original post

14 REPLIES 14
v-xida-msft
Community Support
Community Support

Hi @Anonymous ,

Do you want to configure a cascading dropdown in a model-driven app form?

 

If you want to configure a cascading dropdown in a model-driven app form, I afraid that there is no way to achieve your needs in PowerApps currently. Cascading Dropdown functionality is not supported within Model-Driven app form.

 

If you would like this feature to be added in PowerApps, please consider submit an idea to PowerApps Ideas Forum:

https://powerusers.microsoft.com/t5/PowerApps-Ideas/idb-p/PowerAppsIdeas

 

As an alternative solution, you could consider embed an canvas app within your Model-driven app form. Then use the embedded canvas app to add data to your CDS Entity. Within the embedded canvas app, you could configure a cascading dropdown functionality between the Region Dropdown box and the Country Dropdown box.

More details about embedding an canvas app into a Model-Driven app form, please check the following blog:

https://powerapps.microsoft.com/en-us/blog/announcing-the-general-availability-of-embedded-canvas-apps-in-model-driven-forms/

 

Please consider take a try with above alternative solution, then check if it could help in your scenario.

 

Best regards,

Community Support Team _ Kris Dai
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Tiamo_Liu
Regular Visitor

Is this feature still not supported in model-driven apps?

EricRegnier
Most Valuable Professional
Most Valuable Professional

Hi @Tiamo_Liu,

There are several tricks to get that work as per below, but unfortunately cascading optionsets are not supported out-of-the-box.

  1. Use entities instead. This is always my preference as entities give more flexibility, especially if eventually you need more properties/fields to the drop down items (e.g. Display Order). Using entities, you can filter out-of-the-box the related drop down/lookup/list on the form.
  2. Define the values of your optionset items with a prefix, then with JavaScript, filter the child dropdown based on the selected parent. For example:
    1. Parent optionset:
      • item 1: 11001
      • item 2 11002
    2. Child optionset:
      1. item 1: 11001001
      2. item 2: 11001002
      3. item 3: 11002001
      4. item 4: 11002002

Hope this helps

Hi @EricRegnier , sounds reasonable, thank you! 😉

RobSchootman
Employee
Employee

Can we do anything with Business Rules on this?

EricRegnier
Most Valuable Professional
Most Valuable Professional

Unfortunately up to now it’s now possible to filter option set with business rules... you can submit that idea though at: https://powerusers.microsoft.com/t5/Power-Apps-Ideas/idb-p/PowerAppsIdeas

@EricRegnier,  If my cascading tables are very similar in structure and I would like to generalize it with a single parent-child table, can this be supported with solution 1 you have suggested above?

 

or... if I want to generalize it more, to consolidate all my different category, sub-category tables into one entity, (adding a subject field to filter for the relevant cat, sub-cat...) can I create a filter with model driven app for the relevant one?

EricRegnier
Most Valuable Professional
Most Valuable Professional

Yup this is feasible with custom entities/tables

testasdfasfsafa
Kudo Collector
Kudo Collector

I can't believe Infopath had cascading field support in 2003.. 20 years later, its "replacement" doesn't even have an easy cascading pulldown menus....  not impressed by how slow Power Apps/Power Automate is evolving.

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