docs improved

CHANGELOG.md

@@ -31,6 +31,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - nothing
 
+## [3.4.2]
+
+### Added
+
+- Example of custom rule using other attributes
+
 ## [3.4.1]
 
 ### Fixed

README.md

@@ -255,6 +255,41 @@ Validator.extend('status', async function (field, value, args) {
 
 ```
 
+Example of using other fileds in rule
+
+```javascript
+
+Validator.extend('sumOfFields', async function (field, value, args) {
+
+    if (args.length !== 2) {
+        throw "Invalid seed for rule sumOfFields";
+    }
+
+    // use this.inputs to get another attributes
+
+    const anotherValue = Number(this.inputs[args[0]]);
+
+    const eq = Number(args[1]);
+
+    if ((Number(value) + anotherValue) !== eq) {
+        return false;
+    }
+
+    return true;
+
+});
+
+ let v = new Validator(
+    { num1: '50', num2: '50' }, 
+    { num1: 'sumOfFields:num2,100|required' }
+    );
+
+let matched = await v.check();
+
+assert.equal(matched, true);
+
+```
+
 Some example of using database in rules
 
 ```javascript

package.json

@@ -1,6 +1,6 @@
 {
   "name": "node-input-validator",
-  "version": "3.4.1",
+  "version": "3.4.2",
   "description": "validation library for nodejs, inspired by laravel.",
   "main": "index.js",
   "scripts": {

test/customRules.js

@@ -41,12 +41,65 @@ Validator.extend('status', async function (field, value, args) {
 
 });
 
+Validator.extend('sumOfFields', async function (field, value, args) {
+
+    if (args.length !== 2) {
+        throw "Invalid seed for rule sumOfFields";
+    }
+
+    const anotherValue = Number(this.inputs[args[0]]);
+
+    const eq = Number(args[1]);
+
+    if ((Number(value) + anotherValue) !== eq) {
+        return false;
+    }
+
+    return true;
+
+});
+
 let r = {};
 
 describe('Custom Rules', function () {
 
     describe('Using custom rule even', function () {
 
+
+        it('sumOfFields:should return true', async () => {
+
+            let v = new Validator(
+                { num1: '50', num2: '50' }, { num1: 'sumOfFields:num2,100|required' });
+
+            let matched = await v.check();
+
+            assert.equal(matched, true);
+
+        });
+
+        it('sumOfFields:should return false value is greater', async () => {
+
+            let v = new Validator(
+                { num1: '50', num2: '51' }, { num1: 'sumOfFields:num2,100|required' });
+
+            let matched = await v.check();
+
+            assert.equal(matched, false);
+
+        });
+
+        it('sumOfFields:hould return false value is less', async () => {
+
+            let v = new Validator(
+                { num1: '50', num2: '49' }, { num1: 'sumOfFields:num2,100|required' });
+
+            let matched = await v.check();
+
+            assert.equal(matched, false);
+
+        });
+
+
         it('should return true', async () => {
 
             let v = new Validator(