expressionProperties - Required Expression

[Wiljanneman]

Hi

Is there a way one can create an expression property for toggling required fields?

{ key: 'hideExpression', type: 'input', templateOptions: { label: 'Hide Expression' } },
Maybe something similar to what I used for the hide expression.

[franzeal]

I think the impediment to doing that with simple fieldGroup (expressionProperties) + input (templateOptions.required) is the latter's path. ngx-formly will break templateOptions.required into an object with a property when in this case you'd need the key preserved as is.

An approach that should work is to create a custom type that would interact with that part of the model:

{
    type: 'expressionProperty',
    templateOptions: {
        property: 'templateOptions.required'
    }
}
`