Catalog form validation

[Prakash_S]

I have one catalog item with filed Hardware Type (dropdown: Laptop, Desktop, Monitor, etc.) and justification.

My requirement is If "Hardware Type" is "Laptop" and the "Justification" field is less than 50 characters, display an error message.

[Ankur Bawiskar · Accepted solution]

@Prakash_S 

you can use onChange catalog client script on Justification variable

function onChange(control, oldValue, newValue, isLoading) {
    if (isLoading || newValue == '') {
        return;
    }
g_form.hideFieldMsg('justification');
    // Check if the Hardware Type is 'Laptop'
    if (g_form.getValue('hardware_type') == 'Laptop') {        
        // Check if the Justification field has fewer than 50 characters
        if (newValue.length < 50) {
            g_form.showFieldMsg('justification', 'Justification must be at least 50 characters long.', 'error');
        } 
    } 
}

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[Ankur Bawiskar · Accepted solution]

@Prakash_S 

you can use onChange catalog client script on Justification variable

function onChange(control, oldValue, newValue, isLoading) {
    if (isLoading || newValue == '') {
        return;
    }
g_form.hideFieldMsg('justification');
    // Check if the Hardware Type is 'Laptop'
    if (g_form.getValue('hardware_type') == 'Laptop') {        
        // Check if the Justification field has fewer than 50 characters
        if (newValue.length < 50) {
            g_form.showFieldMsg('justification', 'Justification must be at least 50 characters long.', 'error');
        } 
    } 
}

If my response helped please mark it correct and close the thread so that it benefits future readers.

[Ankur Bawiskar]

@Prakash_S 

you will require 1 more onChange client script on Hardware type

function onChange(control, oldValue, newValue, isLoading) {
    if (isLoading || newValue == '') {
        return;
    }
g_form.hideFieldMsg('justification');
    // Check if the Hardware Type is 'Laptop'
    if (newValue == 'Laptop') {        
        // Check if the Justification field has fewer than 50 characters
        if (g_form.getValue('justification').length < 50) {
            g_form.showFieldMsg('justification', 'Justification must be at least 50 characters long.', 'error');
        } 
    } 
}

If my response helped please mark it correct and close the thread so that it benefits future readers.

[Runjay Patel · Accepted solution]

Hi @Prakash_S ,

You can write onChange clint script.

if (g_form.getValue('hardware_type') === 'Laptop') {
        g_form.setMandatory('justification', true);
        if (g_form.getValue('justification').length < 50) {
            g_form.showErrorBox('justification', 'Justification must be at least 50 characters for Laptop requests.');
        } else {
            g_form.hideErrorBox('justification');
        }
    } else {
        g_form.setMandatory('justification', false);
        g_form.hideErrorBox('justification');
    }

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Runjay Patel - ServiceNow Solution Architect
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