Get field values ajax (ServiceNowDevProgram#871)

* Create MRVSUtils.js

UI Script holding observer class

* Create readme.md

* Create GetFieldValuesAjax.js

* Create readme.md

* Delete UI Scripts/Observe MRVS Events/readme.md

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* Delete UI Scripts/Observe MRVS Events/MRVSUtils.js

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---------

Co-authored-by: Laszlo <[email protected]>

Author: ajcooper72

GlideAjax/Get Field Values/GetFieldValuesAjax.js

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+var GetFieldValuesAjax = Class.create();
+GetFieldValuesAjax.prototype = Object.extendsObject(AbstractAjaxProcessor, {
+
+    getValues: function() {
+        var table = this.getParameter("sysparm_table_name");
+        var sys_id = this.getParameter("sysparm_sys_id");
+        var fields = '' + this.getParameter("sysparm_field_names");
+
+        return JSON.stringify(
+            this._getValues(table, sys_id, fields.split(','))
+        );
+    },
+
+    /**SNDOC
+     @name _getValues
+     @private
+     @description 
+     Get the requested values from the table/record specified.
+	 Uses GlideRecord to allow for dot-walking and top-level values from the same field
+     @param {string} [table_name] - table to get record from
+     @param {string} [record_sys_id] - sys_id of record to query
+     @param {array} [field_names] - list of field names to retrieve
+     @returns {JSON} JSON object containing each field and its display equivalent
+     @example
+     _getValues('sys_user', '62826bf03710200044e0bfc8bcbe5df1', ['user_name', 'first_name', 'last_name', 'email', 'manager.email' ])
+    */
+    _getValues: function(table, sys_id, fields) {
+        var json = {};
+        try {
+
+            var gr = new GlideRecord(table);
+            gr.get(sys_id);
+
+            fields.forEach(function(_field) {
+                var ge = gr.getElement(_field);
+                if (ge) {
+                    json[_field] = {
+                        "value": ge.getValue(),
+                        "displayValue": ge.getDisplayValue()
+                    };
+                }
+            });
+            return json;
+        } catch (e) {
+            gs.error("(GetFieldValuesAjax) Problem getting field values " + e.toString());
+            return {};
+        }
+    },
+
+    type: 'GetFieldValuesAjax'
+});

GlideAjax/Get Field Values/readme.md

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+# Get Field Values
+
+Simple GlideAjax script to get field values from a specified record.  Can query fields including dot walked. 
+Returns value and displayValue as JSON object.
+
+```json
+{
+   "number": {
+      "value": "INC0010051",
+      "displayValue": "INC0010051"
+   },
+   "caller_id.email": {
+      "value": "[email protected]",
+      "displayValue": "[email protected]"
+   },
+   "short_description": {
+      "value": "New Ticket",
+      "displayValue": "New Ticket"
+   },
+   "state": {
+      "value": "2",
+      "displayValue": "In Progress"
+   },
+   "priority": {
+      "value": "1",
+      "displayValue": "1 - Critical"
+   }
+}
+```
+
+
+```javascript
+function onLoad() {
+
+    var ga = new GlideAjax("GetFieldValuesAjax");
+    ga.addParam('sysparm_name', 'getValues');
+    ga.addParam('sysparm_table_name', 'incident');
+    ga.addParam('sysparm_sys_id', '915a93a9473d751001612c44846d4367');
+    ga.addParam('sysparm_field_names', 'number,caller_id.email,short_description,state,priority');
+    ga.getXMLAnswer(function(_answer) {
+		var json = JSON.parse(_answer);
+        console.log(JSON.stringify(json, '', 3));
+    })
+
+}
+```
+