Merge branch 'add-context-aware-va-topics' of https://github.com/ChaseMillers/code-snippets into add-context-aware-va-topics

Author: ChaseMillers

Client-Side Components/Catalog Client Script/Autofilling the request details from previous request/Auto fill script include.JS

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+var GetRecentRequestValues = Class.create();
+GetRecentRequestValues.prototype = Object.extendsObject(AbstractAjaxProcessor, {
+  getValues: function() {
+    var userID = this.getParameter('sysparm_user');
+    var itemID = this.getParameter('sysparm_item');
+    var result = { found: false, values: {} };
+
+    var gr = new GlideRecord('sc_req_item');
+    gr.addQuery('requested_for', userID);
+    gr.addQuery('cat_item', itemID);
+    gr.orderByDesc('sys_created_on');
+    gr.setLimit(1);
+    gr.query();
+
+    if (gr.next()) {
+      result.found = true;
+
+     
+      var vars = gr.variables;
+      result.values = {
+        'requested_for': vars.requested_for + '',
+        'location': vars.location + '',
+        'department': vars.department + ''
+      };
+    }
+
+    return JSON.stringify(result);
+  }
+});
+

Client-Side Components/Catalog Client Script/Autofilling the request details from previous request/Client script Autofill.js

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+function onLoad() {
+  var user = g_user.userID;
+  var itemID = g_form.getUniqueValue();
+
+  var ga = new GlideAjax('GetRecentRequestValues');
+  ga.addParam('sysparm_name', 'getValues');
+  ga.addParam('sysparm_user', user);
+  ga.addParam('sysparm_item', itemID);
+  ga.getXMLAnswer(function(response) {
+    var data = JSON.parse(response);
+    if (data && data.found) {
+      var confirmFill = confirm("We found a similar request. Do you want to autofill fields?");
+      if (confirmFill) {
+        for (var field in data.values) {
+          if (g_form.getControl(field)) {
+            g_form.setValue(field, data.values[field]);
+            console.log("Set " + field + " to " + data.values[field]);
+          } else {
+            console.log("Field not found: " + field);
+          }
+        }
+      }
+    } else {
+      console.log("No previous request found.");
+    }
+  });
+}

Client-Side Components/Catalog Client Script/Autofilling the request details from previous request/Readme.md

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+Recent Request Autofill for ServiceNow Catalog.it automatically offers to fill in fields based on the user's most recent similar request.
+ Features
+- Detects previous requests for the same catalog item
+- Prompts user to reuse values from their last submission
+- Autofills fields like location, department, and justification
+
+<img width="878" height="395" alt="image" src="https://github.com/user-attachments/assets/33ceabf5-2bbc-43e3-8792-f1f9a99699d2" />
+
+
+

Client-Side Components/Catalog Client Script/Normalise and Reset a MRVS based on Variable Changes/README.md

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+# MRVS - Normalise and Reset Rows on Change
+
+## What this solves
+When a controlling variable changes (for example, Environment), existing MRVS rows may no longer be valid. This client script:
+- Clears or normalises specific MRVS columns
+- Deduplicates rows
+- Optionally sorts rows for a cleaner UX
+- Works entirely client-side using MRVS JSON
+
+## Where to use
+Catalog Item → OnChange client script on your controlling variable.
+
+## How it works
+- Reads the MRVS value as JSON via `g_form.getValue('my_mrvs')`
+- Applies transforms (clear columns, unique by key, sort)
+- Writes back the JSON with `g_form.setValue('my_mrvs', JSON.stringify(rows))`
+
+## Setup
+1. Replace `CONTROLLING_VARIABLE` with your variable name.
+2. Replace `MY_MRVS` with your MRVS variable name.
+3. Adjust `COLUMNS_TO_CLEAR`, `UNIQUE_KEY`, and `SORT_BY` as needed.
+
+## Notes
+- To clear the MRVS entirely, set `rows = []` before `setValue`.
+- Works with Catalog Client Scripts; no server call required.
+
+## References
+- GlideForm API (client): `getValue`, `setValue`, `clearValue`  
+  https://www.servicenow.com/docs/bundle/zurich-api-reference/page/app-store/dev_portal/API_reference/GlideForm/concept/c_GlideFormAPI.html
+- Working with MRVS values on the client (community examples)  
+  https://www.servicenow.com/community/developer-articles/accessing-multi-row-variable-set-value-outside-the-multi-row/ta-p/2308876

Client-Side Components/Catalog Client Script/Normalise and Reset a MRVS based on Variable Changes/mrvs_normalise_onchange.js

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+function onChange(control, oldValue, newValue, isLoading) {
+  if (isLoading) return;
+
+  var MRVS_NAME = 'MY_MRVS';                 // your MRVS variable name
+  var COLUMNS_TO_CLEAR = ['env', 'owner'];   // MRVS column names to clear
+  var UNIQUE_KEY = 'hostname';               // MRVS column that should be unique
+  var SORT_BY = 'hostname';                  // MRVS column to sort by
+
+  try {
+    var raw = g_form.getValue(MRVS_NAME);
+    var rows = raw ? JSON.parse(raw) : [];
+    if (!Array.isArray(rows)) rows = [];
+
+    // Clear specified columns
+    rows.forEach(function(row) {
+      COLUMNS_TO_CLEAR.forEach(function(col) { if (row.hasOwnProperty(col)) row[col] = ''; });
+    });
+
+    // Deduplicate by UNIQUE_KEY
+    if (UNIQUE_KEY) {
+      var seen = {};
+      rows = rows.filter(function(row) {
+        var key = String(row[UNIQUE_KEY] || '').toLowerCase();
+        if (!key || seen[key]) return false;
+        seen[key] = true;
+        return true;
+      });
+    }
+
+    // Sort (case-insensitive)
+    if (SORT_BY) {
+      rows.sort(function(a, b) {
+        var A = String(a[SORT_BY] || '').toLowerCase();
+        var B = String(b[SORT_BY] || '').toLowerCase();
+        if (A < B) return -1;
+        if (A > B) return 1;
+        return 0;
+      });
+    }
+
+    g_form.setValue(MRVS_NAME, JSON.stringify(rows));
+  } catch (e) {
+    console.error('MRVS normalise failed', e);
+  }
+}

Client-Side Components/Catalog Client Script/Normalise and Reset a MRVS based on Variable Changes/variant_reset_specific_columns.js

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+function onChange(control, oldValue, newValue, isLoading) {
+  if (isLoading) return;
+
+  var MRVS_NAME = 'MY_MRVS';
+  var COLUMNS_TO_CLEAR = ['env', 'region'];
+
+  var rows = [];
+  try { rows = JSON.parse(g_form.getValue(MRVS_NAME) || '[]'); } catch (e) {}
+  if (!Array.isArray(rows)) rows = [];
+
+  rows.forEach(function(row) {
+    COLUMNS_TO_CLEAR.forEach(function(col) { if (row.hasOwnProperty(col)) row[col] = ''; });
+  });
+
+  g_form.setValue(MRVS_NAME, JSON.stringify(rows));
+}
+

Client-Side Components/Catalog Client Script/Reusable GlideAjax Client Script/DynamicTableQueryUtil.js

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+var DynamicTableQueryUtil = Class.create();
+DynamicTableQueryUtil.prototype = Object.extendsObject(AbstractAjaxProcessor, {
+
+    getTableRow: function() {
+        var tableName = this.getParameter('sysparm_table_name');
+        var keyField = this.getParameter('sysparm_key_field');
+        var keyValue = this.getParameter('sysparm_key_value');
+        var fieldsParam = this.getParameter('sysparm_fields');
+        var limitFields = !JSUtil.nil(fieldsParam);
+        var desiredFields = limitFields ? fieldsParam.split(',') : [];
+
+        var result = {};
+        var tableObj = {};
+        var gr = new GlideRecord(tableName);
+
+        // Use addQuery for non-sys_id fields
+        if (keyField === 'sys_id') {
+            if (!gr.get(keyValue)) {
+                return null;
+            }
+        } else {
+            gr.addQuery(keyField, keyValue);
+            gr.query();
+            if (!gr.next()) {
+                return null;
+            }
+        }
+
+        // Handle variables (if present)
+        if (gr.variables) {
+            for (var key in gr.variables) {
+                if (!JSUtil.nil(gr.variables[key])) {
+                    var variableObj = gr.variables[key];
+                    tableObj['variables.' + key] = {
+                        fieldDisplayVal: variableObj.getDisplayValue() || String(variableObj),
+                        fieldVal: String(variableObj)
+                    };
+                }
+            }
+        }
+
+        // Handle standard fields
+        var fields = gr.getFields();
+        for (var i = 0; i < fields.size(); i++) {
+            var field = fields.get(i);
+            var fieldName = field.getName();
+            tableObj[fieldName] = {
+                fieldDisplayVal: field.getDisplayValue() || String(field),
+                fieldVal: String(field)
+            };
+        }
+
+        // Add sys_id explicitly
+        tableObj['sys_id'] = {
+            fieldDisplayVal: 'Sys ID',
+            fieldVal: gr.getUniqueValue()
+        };
+
+        // Filter fields if requested
+        if (limitFields) {
+            desiredFields.forEach(function(field) {
+                field = field.trim();
+                if (tableObj[field]) {
+                    result[field] = tableObj[field];
+                }
+            });
+        } else {
+            result = tableObj;
+        }
+
+        return new JSON().encode(result);
+    }
+});

Client-Side Components/Catalog Client Script/Reusable GlideAjax Client Script/Readme.md

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+This solution provides a generic and reusable GlideAjax-based client-server interaction in ServiceNow that allows querying any table by passing:
+
+Table name
+Key field and value
+Desired fields to retrieve
+
+It dynamically returns field values from the server and populates them on the form, making it ideal for use cases like CMDB enrichment, entitlement lookups, or dynamic form population.
+
+1. Client Script (onChange)
+Triggers on field change.
+Sends parameters to the Script Include via GlideAjax.
+Receives JSON response and sets target field value.
+
+Parameters:
+sysparm_table_name: Table to query (e.g., sys_user)
+sysparm_key_field: Field to match (e.g., sys_id)
+sysparm_key_value: Value to match
+sysparm_fields: Comma-separated list of fields to retrieve
+
+2. Script Include: DynamicTableQueryUtil
+   
+Processes incoming parameters.
+Queries the specified table and retrieves requested fields.
+Supports both standard fields and catalog item variables.
+Returns a JSON object with field values and display values.

Client-Side Components/Catalog Client Script/Reusable GlideAjax Client Script/clientscript.js

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+function onChange(control, oldValue, newValue, isLoading) {
+    if (isLoading || newValue === '') {
+        return;
+    }
+
+    // Define parameters dynamically
+    var tableName = 'sys_user'; // Change as needed
+    var keyField = 'sys_id'; // Change as needed
+    var fieldsToFetch = 'email'; // Comma-separated list
+    var targetField = 'user'; // Field to populate
+
+    var ga = new GlideAjax('DynamicTableQueryUtil');
+    ga.addParam('sysparm_name', 'getTableRow');
+    ga.addParam('sysparm_table_name', tableName);
+    ga.addParam('sysparm_key_field', keyField);
+    ga.addParam('sysparm_key_value', newValue);
+    ga.addParam('sysparm_fields', fieldsToFetch);
+    ga.getXML(function(response) {
+        var answer = response.responseXML.documentElement.getAttribute("answer");
+        if (!answer) {
+            alert('No response from Script Include');
+            return;
+        }
+
+        var parsedAnswer = JSON.parse(answer);
+        if (parsedAnswer[fieldsToFetch]) {
+            g_form.setValue(targetField, parsedAnswer[fieldsToFetch]['fieldVal']);
+        } else {
+            alert('error');
+        }
+    });
+}

Client-Side Components/Client Scripts/Auto-Populate Short Discription/Auto populate short description.js

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+function onChange(control, oldValue, newValue, isLoading, isTemplate) {
+    if (isLoading || newValue === '') {
+        return;
+    }
+
+    // Define category-to-short description mapping
+    var categoryToShortDescription = {
+        'hardware': 'Hardware Issue - ',
+        'software': 'Software Issue - ',
+        'network': 'Network Issue - ',
+        'inquiry': 'Inquiry/Help - ',
+		'database': 'Database - '
+    };
+
+    // Convert the selected value to lowercase for matching
+    var selectedCategory = newValue.toLowerCase();
+
+    // If category exists in mapping, update the short description
+    if (categoryToShortDescription.hasOwnProperty(selectedCategory)) {
+        var existingDesc = g_form.getValue('short_description') || '';
+        var prefix = categoryToShortDescription[selectedCategory];
+
+        // Only add prefix if it's not already there
+        if (!existingDesc.startsWith(prefix)) {
+            g_form.setValue('short_description', prefix + existingDesc);
+            g_form.showFieldMsg('short_description', 'Short Description auto-updated based on category.', 'info');
+        }
+    }
+}