Catalog client script is not making variable read only on catalog form.

[Obito]

Catalog client script is not making variable read only on catalog form. The variable name is 'Tier Confirmation' 

Here I am checking if catalog task state is closed complete and task name is 'xyz Tier Confirmation'

function onLoad() {
    //Type appropriate comment here, and begin script below
    if (g_form.getValue('state').toString() == '3' && g_form.getValue('u_task_name') == 'xyz Tier Confirmation') {
        g_form.setReadOnly('tier_confirmation', true);
    }
}

[ashishdevsingh]

Make sure you are not making that field as mandatory before making read only. 
rest as suggested: use Alert to find it out if it is going inside the condition or not.  

[Juhi Poddar]

Hello @Obito 

I think the reason why you are not getting the expected result is:

• Catalog task "state" is on catalog task table whereas variable "Tier Confirmation" is on catalog item or request item.
• These two are at different table & position. 
• The above client script will work when both the fields are at same form.

To achieve the desired result:

• Write an onload client script on sc_req_item table and an script include to check the sc_task state.

Client script:

function onLoad() {
    // Get the sys_id of the current request item
    var reqItemSysId = g_form.getUniqueValue();

    // Call the Script Include asynchronously
    var ga = new GlideAjax('CheckTaskStatus');
    ga.addParam('sysparm_name', 'isTaskClosedComplete');
    ga.addParam('sysparm_req_item_id', reqItemSysId);
    ga.getXMLAnswer(function (response) {
        var isClosedComplete = response;

        // If the related task is in "Closed Complete" state, make the variable read-only
        if (isClosedComplete === 'true') {
            g_form.setReadOnly('variables.tier_confirmation', true); // Use variables.<variable_name> for catalog variables
        }
    });
}

script include:

    isTaskClosedComplete: function (reqItemSysId) {
        var task = new GlideRecord('sc_task');
        task.addQuery('parent', reqItemSysId);
        task.addQuery('state', 3); // Assuming "Closed Complete" has the value '3'
        task.query();
        return task.hasNext().toString(); // Returns true if a task in "Closed Complete" state exists
    },

Note: Script include should be client callable

Hope this helps!

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Thank You
Juhi Poddar