DateTime Field in Backend not clearing

[soeren-eckel-adesso]

A brief description of the issue goes here.

Date time in backend not clearing

Reproduction

Version: 10.2.3

If you're filing a bug, please describe how to reproduce it. Include as much relevant information as possible, such as:

Bug summary

If a date time in backend is set and users tries to clear it nothing is updated and the old value is still present.

Steps to reproduce

• create a form with a text and a date field
• fill out form, set text and a date
• go to entries in backend and open entry
• try to clear date
• press save

Expected result

date time is not set anymore

Actual result

former date is still set

[soeren-eckel-adesso]

A javascritp error is thrown:

See also https://github.com/umbraco/Umbraco.Forms.Issues/issues/996 for a workaround, so javascript error is not throw anymore, but backend throws a parsing error. However this can also be soved as a workaround in Editors.Form.FormController Angular controller.

   function parseEditedValues(selectedEntryDetail) {
                // If multiple values have potentially been saved, the editor supporting multi-value save operations (e.g. dropdown-multiple.html)
                // will have saved a flag on the model object.
                // If set, we need to parse out the comma separated values.
                // If not set, we have a single value.
                if (selectedEntryDetail.multipleValuesSaved) {
                    return selectedEntryDetail.value.split(", ");
                }

                if(selectedEntryDetail.viewName === 'date' && !selectedEntryDetail.value){
                    return [];
                }

                return [selectedEntryDetail.value];
            }