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jmorgan74
Frequent Visitor

Conditionally setting fields to mandatory

Hi,

 

I've written some javascript to conditionally show/hide a section of a form based on a yes/no radio button click.  This is working great but, I want to be able to set the fields in the hidden section to mandatory if I select "yes" and non-mandatory if I select "no".  At the moment, when I hide the fields and submit the form, I get a "field is required" so I want to disable this if the section is hidden.

 

I understand I can do this in PowerApps using an expression, is this possible in power pages?

 

Regards,

 

Jon.

1 ACCEPTED SOLUTION

Accepted Solutions
PHKPHK
Frequent Visitor

In model app you can use "

 formContext.getControl("field_name").setRequiredLevel("required");

 in Power portal, you have to use following code to remove validation 

 

 

 

//Clean up previous validator <span> if present
if ($('#ValidationSummaryEntityFormView').length) {
$('#ValidationSummaryEntityFormView').hide();
}

try {
if ($("#" + fieldName) != undefined) {
$("#" + fieldName).closest(".control").prev().removeClass("required");
$("#" + fieldName).prop('required', false);

for (i = 0; i < Page_Validators.length; i++) {
if (Page_Validators[i].id == fieldName + "Validator") {
Page_Validators.splice(i, 1);
}
}
}
} catch (error) {
errorHandler(error);
}

 

 

and to add validation use 

 

    try {
        removeValidator();
        if ($("#" + fieldName) != undefined) {
            $("#" + fieldName).prop('required', true);
            $("#" + fieldName).closest(".control").prev().addClass("required");

            // Create new validator
            var newValidator = document.createElement('span');
            newValidator.style.display = "none";
            newValidator.id = fieldName + "Validator";
            newValidator.controltovalidate = fieldName;
            newValidator.errormessage = "<a href='#" + fieldName + "_label'>" + $("#" + fieldName + "_label").html() + " is a required field.</a>";
            newValidator.initialvalue = "";
            newValidator.evaluationfunction = function () {
                var value = $("#" + fieldName).val();
                if (value == null || value == "") {
                    return false;
                } else {
                    return true;
                }
            };

            // Add the new validator to the page validators array:
            Page_Validators.push(newValidator);
        }
    } catch (error) {
        errorHandler(error);
    }

 

More info : https://learn.microsoft.com/en-us/power-pages/configure/add-custom-javascript


View solution in original post

4 REPLIES 4
SteffenHNW
Frequent Visitor

do you use jquery?

I think you have to remove the required attributes:

$("#fieldid").removeAttr("required").removeAttr("aria-required");

 

I have a question for you. If I hide fields with javascript, there is still a blank box with 41px height. Do you have a better code to hide the whole field without leaving blank spaces?

 

Greets,

Steffen

Hi,

Removing the required attribute doesn't work as the validation is done server-side.

 

I usually just hide the fields with:

 

$('#fieldId').hide();

This shouldn't leave any space.

 

Cheers,

J.

PHKPHK
Frequent Visitor

In model app you can use "

 formContext.getControl("field_name").setRequiredLevel("required");

 in Power portal, you have to use following code to remove validation 

 

 

 

//Clean up previous validator <span> if present
if ($('#ValidationSummaryEntityFormView').length) {
$('#ValidationSummaryEntityFormView').hide();
}

try {
if ($("#" + fieldName) != undefined) {
$("#" + fieldName).closest(".control").prev().removeClass("required");
$("#" + fieldName).prop('required', false);

for (i = 0; i < Page_Validators.length; i++) {
if (Page_Validators[i].id == fieldName + "Validator") {
Page_Validators.splice(i, 1);
}
}
}
} catch (error) {
errorHandler(error);
}

 

 

and to add validation use 

 

    try {
        removeValidator();
        if ($("#" + fieldName) != undefined) {
            $("#" + fieldName).prop('required', true);
            $("#" + fieldName).closest(".control").prev().addClass("required");

            // Create new validator
            var newValidator = document.createElement('span');
            newValidator.style.display = "none";
            newValidator.id = fieldName + "Validator";
            newValidator.controltovalidate = fieldName;
            newValidator.errormessage = "<a href='#" + fieldName + "_label'>" + $("#" + fieldName + "_label").html() + " is a required field.</a>";
            newValidator.initialvalue = "";
            newValidator.evaluationfunction = function () {
                var value = $("#" + fieldName).val();
                if (value == null || value == "") {
                    return false;
                } else {
                    return true;
                }
            };

            // Add the new validator to the page validators array:
            Page_Validators.push(newValidator);
        }
    } catch (error) {
        errorHandler(error);
    }

 

More info : https://learn.microsoft.com/en-us/power-pages/configure/add-custom-javascript


jmorgan74
Frequent Visitor

Thanks a lot @PHKPHK

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