Client-side script use cases

Use cases for client-side scripts include displaying field messages, changing form colors, adding fields, and creating UI routing actions.

Add a field to the service catalog checkout

This is an example of adding a Company field to the checkout below the Requested for field using non-cart layout macros, that is, glide.sc.use_cart_layouts is false.

시작하기 전에

Role required: Admin

이 태스크 정보

그림 1. Requested for field

This field passes a provided value to the Company field of the Service Catalog Request.

This example makes the following assumptions:

• The instance using two-step checkout. If two-step checkout is not enabled, enable it before beginning. For more information, see Service Catalog checkout models.
• This example populates the Company field on the Service Catalog Request form. If the field does not appear on the form, configure the form before beginning. For instructions, see Personalize a form.

프로시저

1. Go to System UI > UI Macros and select servicecatalog_cart_template.
2. Find where there are hidden variables declared and add the following line:

   <input type="HIDDEN" name="cart_id" id="cart_id" value="$[sc_cart.sys_id]" />

3. Find the following code, which generates the Requested For code:

   <tr class="header">
   <td width = "30%">
     ${gs.getMessage('Requested for')}:
     </td>
     <td width="70%">
       <label for="requestor_location">${gs.getMessage('Deliver to')}:</label>
     </td>
   </tr>
   <tr><td>$[SP]</td> 
   </tr>
     <tr><td valign="top">
       <j2:if test="$[jvar_can_delta_rf == false]">
         $[sc_cart.requested_for.getDisplayValue()]
       </j2:if>
       <j2:if test="$[jvar_can_delta_rf != false]">
         <g2:catalog_requested_for />
       </j2:if>
     </td>
     <td>
       <textarea id="requestor_location" style="width:100%" rows="4"
         name="requestor_location" wrap="soft" onChange="catDeliveryAddress('$[sc_cart.sys_id]', 'requestor_location');"> 
         $[sc_cart.delivery_address]
       </textarea>
     </td>
   </tr>
   <tr>
     <td>$[SP]</td>
   </tr>

4. Add the following code afterward:

   <tr class="header">
     <td colspan="2">Company</td>
   </tr>
   <tr>
     <td>$[SP]</td>
   </tr>
   <tr>
     <td colspan="2">
       <g2:ui_reference name="core_company" table="core_company" onchange="setCartValue()"/>
     </td>
   </tr>
   <tr>
     <td>$[SP]</td>
   </tr>

   주:

   The 'ui_reference' macro defines a reference field. There are several macros for different field types. You can see examples of these field types under System UI -> UI Macros. These macros start with 'ui_'. For this example, the reference field created is named core_company. For more information, see UI macros.
5. Now navigate to System UI > UI Pages and select the servicecatalog_checkout_one UI Page.
6. Add the followings script to the Client script field.

   function setCartValue() { 
     var newField = gel('core_company'); 
     var myCart = gel('cart_id'); 
     var cart_item = new GlideRecord('sc_cart_item');
     cart_item.addQuery('cart', myCart.value);
     cart_item.query(); 
     if(cart_item.next()) {
       cart_item.hints = "<hints><entry key='sysparm_processing_hint' value='setfield:request.company=" + newField.value + "'/></hints>";
       cart_item.update(); 
     } 
   }

   For this example, the reference field was called core_company, and the field being populated on the request is company. If different fields are used:

   • Find this line: var company = gel('core_company'); and replace core_company with the name of the field in the checkout.
   • In the line that starts with 'cart_item.hints' replace 'request.company' with the name of the field to be populated on the request ticket where 'request' is the request being generated and 'company' is the name of the field.

결과

When an item is ordered, the company field appears on the Catalog form:

Add autofill functionality

Add autofill functionality is also called incident template, auto assignments, quick calls, call script, or auto populate.

To auto-fill a Short Description field based on the Subcategory selected:

1. Create a lookup table.
2. Populate the key field, Subcategory.
3. Populate the auto-filled field, Short Description.

function onChange(control, oldValue, newValue, isLoading) { 
  if (isLoading) { return; } 
  var newrec = gel('sys_row');
  //Check if new record
  if (newrec.value == -1) { 
    var lookup = new GlideRecord('u_short_desc_lookup'); 
    lookup.addQuery('u_subcategory', g_form.getValue('subcategory'));
    lookup.query();
    var temp; //temp var - reusable
    if (lookup.next()) {
      temp = lookup.u_short_description;
        if (null != temp) { //Set the form value from lookup if there is a lookup value
          g_form.setValue('short_description', temp); } 
        else {
          g_form.setValue('short_description', "" ); } } 
   else { 
     //If a lookup record does not exist based on lookup.addQuery 
     //Then set to UNDEFINED or NULL depending on type
      g_form.setValue('short_description', ""); } } 
}

You can populate many fields or pull in call script questions into the Comments field so call center personnel gather good information to pass on to a technician.

Setting a field to password reset

Lookup table has a record with the following key and auto-fill settings:

• Subcategory = Password
• Short Description = Password Reset

Client script settings:

• Type = onChange
• Table name = incident
• Field name = Subcategory

When the user selects the subcategory of Password on the Incident form, a client script looks up the matching record and sets the short description equal to Password Reset.

Change form color on state change

Changes color of a form field of the form on state change. The script can easily be changed to adjust any property of any object on the page accessible via the HTML DOM.

경고:

The customization described here was developed for use in specific instances, and is not supported by Now Support. This method is provided as-is and should be tested thoroughly before implementation. Post all questions and comments regarding this customization to our community forum.

Name: Change Form Color on State Change

Type: Client script

Description: Changes color of a form field of the form on state change. The script can easily be changed to adjust any property of any object on the page accessible via the HTML DOM.

Script:

function onChange(control, oldValue, newValue, isLoading) { 
  var elementID = gel("incident.priority");
    switch(newValue) { 
      case "1": elementID.style.backgroundColor = "red"; break; 
      case "2": elementID.style.backgroundColor = "tomato"; break;
      case "3": elementID.style.backgroundColor = "orange"; break;
      case "4": elementID.style.backgroundColor = "yellow"; break;
      case "5": elementID.style.backgroundColor = "green"; break; 
      default: elementID.style.backgroundColor = "white"; break; } }

Create a UI routing action

This solution enables you to create a record with the service desk without knowing whether it is an incident or request item; the service desk can then route the record to the appropriate table.

시작하기 전에

Role required: Admin

프로시저

1. Create a new table that extends the task table (for example, New Call).
2. Create a module to create a new New Call record.
3. Create any fields that you want on the New Call table.

   The only fields you need are those fields necessary to determine whether the new call should route to an Incident or a Request Item. Ensure that the form contains any fields that you want to pass to the Incident or Request Item. In this example, the following are created on the form:

   • Requested for (reference)
   • Location (reference)
   • Call type (choice with two values--Incident and Request)
   • Request Item (reference to the sc_cat_item Item table)
4. Add some UI policies to set a couple of fields to mandatory and hide the Request item field based on the Call type selection.
5. Remove unnecessary buttons and functionality from the form.
6. Create a new UI Action button.
   This button redirects the user to either an incident or a request. It also creates the incident record and copies values to the incident and the Request Item form.

   var reqItem = current.u_item;
   var requestedFor = current.u_requested_for;
   var location = current.location;
   
   if(current.u_incident_request == 'Incident'){
     //Create a new incident record and redirect to the new incident
     var rec = new GlideRecord('incident');
     rec.initialize();
     rec.caller_id = requestedFor;
     rec.location = location;
     rec.insert();
     action.setRedirectURL(rec);
   }
   
   if(current.u_incident_request == 'Request'){
     //Build the url and route the user to the request item
     var url = '';
     if(current.u_item.sys_class_name == 'sc_cat_item_guide'){
       url = 'com.glideapp.servicecatalog_cat_item_guide_view.do?sysparm_initial=true&sysparm_guide=' + 
         reqItem + '&sysparm_user=' + requestedFor + '&sysparm_location=' + location;
     }
     else{
       url = 'com.glideapp.servicecatalog_cat_item_view.do?sysparm_id=' + reqItem + '&sysparm_user=' +  
         requestedFor + '&sysparm_location=' + location;
     }
     action.setRedirectURL(url);
   }

7. The Route button in the preceding example passes the Requested for and Location values in the URL to the Request Item form.
   Ensure that you have variables called requested_for and location on your item, record producer, or order guide that map these values using the following client script. There is a limit as to how much information you can pass, as the URL has a restricted length. Avoid sending information from long text fields using this method.

   function onLoad() {
     var url = document.location.toString();
     var userKey = 'sysparm_user=';
     var locKey = 'sysparm_location=';
     var userPosition = url.indexOf(userKey);
     var locPosition = url.indexOf(locKey)
     if (userPosition != -1) {
       var user = url.substr(userPosition+userKey.length, 32);
       g_form.setValue('requested_for', user);
     }
     if (locPosition != -1) {
       var loc = url.substr(locPosition+locKey.length, 32);
       g_form.setValue('location', loc);
     }
   }

Display field messages

Rather than use JavaScript alert(), for a cleaner look, you can display an error on the form itself. The methods showFieldMsg() and hideFieldMsg() can be used to display a message just below the field itself.

showFieldMsg and hideFieldMsg are methods that can be used with the g_form object.

These methods are used to change the form view of records (Incident, Problem, and Change forms). These methods may also be available in other client scripts, but must be tested to determine whether they work as expected.

When a field message is displayed on a form on load, the form scrolls to ensure that the field message is visible. Ensuring that users do not miss a field message because it was off the screen.

The global property glide.ui.scroll_to_message_field controls automatic message scrolling when the form field is offscreen (scrolls the form to the control or field).

표 1. Method Detail

Method Detail	Parameters	Example
showFieldMsg(input, message, type, [scrollform])	input — name of the field or control message — message you would like to appear type — 'info', 'error', or 'warning'; defaults to info if not supplied scroll form — (optional) Set scrollForm to false to prevent scrolling to the field message offscreen	Error Message g_form.showFieldMsg('impact','Low impact not allowed with High priority','error'); Informational Message g_form.showFieldMsg('impact', 'Low impact response time can be one week','info'); //or this defaults to info type //g_form.showFieldMsg('impact', 'Low impact response time can be one week');
hideFieldMsg(input)	input — name of the field or control clearAll — (optional) boolean parameter indicating whether to clear all messages. If true, all messages for the field are cleared. If false or empty, only the first message is removed	Removing a Message //this will clear the first message printed to the field g_form.hideFieldMsg('impact');

Legacy support

The showErrorBox() and hideErrorBox() methods are not recommended.

Using client and server code in a UI action

You can use a script to validate input upon a UI Action click on the client side before updating the record on the server side. The user will not have to click the button twice to validate the required fields and update the record.

The script calls the client function for client-side validation, and the UI action completes the task if it passes. The code that runs without onclick statement ensures that the server-side function does not run until the client function is no longer running. If successful, the server-side function runs and updates the record.

// Client-side onclick function
function resolveIncident() {
  // Set the 'Incident state' and 'State' values to 'Resolved', and display mandatory fields
  g_form.setValue('incident_state', 6);
  g_form.setValue('state', 6);
  g_form.setValue('resolved_by', g_user.userID);

  // Call the UI action and skip the 'onclick' function
  gsftSubmit(null, g_form.getFormElement(), 'resolve_incident'); //MUST call the 'Action name' set in this UI Action
}

// Code that runs without 'onclick'
// Ensure call to server-side function with no browser errors
if (typeof window == 'undefined')
  serverResolve();

// Server-side function
function serverResolve() {
  current.incident_state = IncidentState.RESOLVED;
  current.state = IncidentState.RESOLVED;
  current.resolved_by = gs.getUserID();
  current.update();
}

gsftSubmit(String control, Object form, String action_name)

Submits a form as if the user had clicked a UI Action after checking for required fields and executing onSubmit() client scripts. Enables calling client-side code and server-side code and in a single UI action.

표 2. Parameters

Name	Type	Description
control	String	Name of a form button on which you want to simulate a user click. Use null otherwise.
form	Object	Optional. The form element that contains the submitted input. You can retrieve this value by calling the g_form.getFormElement() method.
action_name	String	Action name. This value is provided in the record listed in the UI Actions [sys_ui_action] table. For example, 'resolve_incident' is the action name of the Resolve button in the Incident [incident] table.

관련 개념

• GlideUser - Client

관련 참조

• GlideForm - getFormElement()
• Scoped GlideSystem - eventQueue(String name, Object instance, String parm1, String parm2, String queue)

관련 정보

• Defining UI actions