Added new feature, copyValueTo and updated sink and docs

Author: Dervisevic

docs/index.md

@@ -14,6 +14,7 @@ Documentation
     1. [Validation Messages](#validation-messages)
     1. [Inline feedback icons](#inline-feedback-icons)
     1. [ngModelOptions](#ngmodeloptions)
+    1. [copyValueTo](#copyvalueto)
 1. [Specific options and types](#specific-options-and-types)
     1. [fieldset and section](#fieldset-and-section)
     1. [conditional](#conditional)
@@ -342,6 +343,7 @@ General options most field types can handle:
                                // and their items will inherit it.
   htmlClass: "street foobar",  // CSS Class(es) to be added to the container div
   fieldHtmlClass: "street"     // CSS Class(es) to be added to field input (or similar)
+  copyValueTo: ["address.street"]     // Copy values to these schema keys.
 }
 ```
 
@@ -458,6 +460,16 @@ Ex.
 See [Global Options](#global-options) for an example how you set entire form
 to validate on blur.
 
+### copyValueTo
+This option has a very specific use case. Imagine you have the same option in several places, but you want them to be controlled from just one field. You specify what keys the value should be copied to, and the *viewValue* will be copied to these keys on the model. **Note: changing the model directly will not copy the value, it's intended for copying user input**. The recieving fields can be shown, but the intent for them is to be hidden. 
+
+Ex.
+```javascript
+{
+  key: "email.main",
+  copyValueTo: ["email.confirm", "other.email"]
+}
+```
 
 Specific options and types
 --------------------------

examples/data/sink.json

@@ -152,7 +152,14 @@
             {
               "title": "More stuff",
               "items": [
-                "attributes",
+                "attributes.eyecolor",
+                "attributes.haircolor",
+                {
+                  "key": "attributes.shoulders.left",
+                  "title": "Left shoulder",
+                  "description": "This value is copied to attributes.shoulders.right in the model",
+                  "copyValueTo": ["attributes.shoulders.right"]
+                },
                 {
                   "key": "shoesize",
                   "feedback": false

src/directives/schema-validate.js

@@ -1,4 +1,4 @@
-angular.module('schemaForm').directive('schemaValidate', ['sfValidator', function(sfValidator) {
+angular.module('schemaForm').directive('schemaValidate', ['sfValidator', 'sfSelect', function(sfValidator, sfSelect) {
   return {
     restrict: 'A',
     scope: false,
@@ -21,6 +21,15 @@ angular.module('schemaForm').directive('schemaValidate', ['sfValidator', functio
       };
       var form   = getForm();
 
+      if (form.copyValueTo) {
+        ngModel.$viewChangeListeners.push(function() {
+          var paths = form.copyValueTo;
+          angular.forEach(paths, function(path) {
+            sfSelect(path, scope.model, ngModel.$viewValue);
+          });
+        });
+      }
+
       // Validate against the schema.
 
       // Get in last of the parses so the parsed value has the correct type.
@@ -55,7 +64,6 @@ angular.module('schemaForm').directive('schemaValidate', ['sfValidator', functio
         });
       }
 
-
       // Listen to an event so we can validate the input on request
       scope.$on('schemaFormValidate', function() {