![]() ![]() When using setValue() on a reference field, include the displayValue parameter to avoid additional server calls. Whether or not the current record has attachmentsĪ display business rule sends this information to the client using the following script:ĬiCheck.prototype = Object.extendsObject(AbstractAjaxProcessor, ) Use the setValue() displayValue parameter for reference fields.In those cases, use an asynchronous GlideAjax call.įor example, assume you open an incident and need to pass this information to the client: The business rule cannot be triggered dynamically. However, you can only load data this way when the form is loaded. This is a very efficient means of sending information from the server to the client. Theg_scratchpad is sent to the client when the form is requested, making it available to all client-side scripting methods. If you know what information the client needs from the server before the form is loaded, a display business rule can create g_scratchpad properties to hold this information. While this solution may be faster to configure, it is slower to execute. A typical solution to this situation is to place the field on the form and then always hide it with a client script or UI policy. The g_scratchpad object passes information from the server to the client, such as when the client requires information not available on the form.įor example, if you have a client script that needs to access the field u_retrieve, and the field is not on the form, the data is not available to the client script. Both methods retrieve all fields in the requested GlideRecord when most cases only require one field.Įxample: Retrieve server data using g_scratchpad However, these methods are no longer recommended due to their performance impact. GlideRecord and g_form.getReference() are also available for retrieving server information. The primary difference between these methods is that g_scratchpad is sent once when a form is loaded (information is pushed from the server to the client), whereas GlideAjax is dynamically triggered when the client requests information from the server. The top ways to get information from the server are g_scratchpad and asynchronous GlideAjax lookup. Use client data as much as possible to eliminate the need for time-consuming server lookups.Ĭlient scripting uses either data available on the client or data retrieved from the server. Use the following methods to restrict list editing when using client scripts: With the exception of onCellEdit client scripts, UI policies and client scripts apply to forms only. If you create UI policies or client scripts for fields on a form, you must use another method to ensure that data in those fields is similarly controlled in a list. Create a separate onCellEdit client script.Create appropriate business rules or access controls for list editing.If you create client scripts to control field values on a form, you must use another method to control these field values in a list. Making record updates prior to form load can produce unexpected results that bypass client-side processing. Proper client-side processing depends on the form loading first. Well-designed client scripts can reduce the amount of time it takes users to complete a form. See the original article on the ServiceNow doc site: ServiceNow: Client-side scripting design and processing. Here is the client script that I am trying to get working in the new Service Portal.This article is based on the ServiceNow documentation article. How can we stop the submission of a form based on the value returned by an asynchronous callback? We can't use GlideAjax for the same reason, getXMLWait() is no longer supported. That's because the script proceeds along to submit the form before the callback has a chance to retrieve the value. ![]() The issue is that since the callback is asynchronous, it does not actually stop the form from being submitted! So I can't use gr.query() I need to use a callback such as gr.query(callback). However, the new Service Portal does not support synchronous GlideRecord query. We have this working fine on the CMS portal. If a matching record is found, we need to STOP the form from being submitted. I have a Client Script that performs a GlideRecord query to check if a record already exists with the same name.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |