Re: Warning a user based on input on action invocation

[Andi Huber]

You can solve this by adding a boolean parameter to the action, not as pretty 
as a yellobackground advise, but at least works with what we already have:

import org.apache.isis.applib.annotation.Action;
import org.apache.isis.applib.annotation.Mixin;
import org.apache.isis.applib.annotation.ParameterLayout;

import lombok.RequiredArgsConstructor;

@Mixin @RequiredArgsConstructor
public class SimpleObject_advice {

    private final SimpleObject holder;
    
    @Action
    public SimpleObject $$(
            @ParameterLayout(named="input") String input, 
            @ParameterLayout(named="do it anyway") boolean doItAnyway) {

        // some action here
        return holder;
    }
    
    public String validate$$(String input, boolean doItAnyway) {
        if(doItAnyway) {
            return null;
        }
        return "not good, here's my advice to you ...";
    }
}

Cheers, Andi

On 2018/11/23 15:46:26, Sander Ginn <san...@ginn.it> wrote: 
> Hi,
> 
> We’ve had a number of support requests relating to new users of our 
> application that are not yet fully familiar with their business process. 
> We do not wish to invalidate input as many business rules are not clearly 
> defined in a ‘correct/incorrect’ fashion, with many exceptions and special 
> cases.
> 
> As a middle ground, I would like to propose an extension of the metamodel 
> with a support method similar to validateXxx(), which renders the familiar 
> dialog and warning message underneath the input field with another colour 
> (yellow, probably) but does not block the user from completing the action.
> 
> Does anyone else consider this to be a useful addition, and if so, what would 
> be a good method prefix? My first thought was warnXxx(), but that does not 
> make a lot of sense syntactically; after all, we aren’t warning the action in 
> question (as opposed to validate/hide/disableXxx()) but the user instead.
> 
> Best
> Sander Ginn