allow validate to change submitted value, fixes #400

src/editable-form/editable-form.js

@@ -199,9 +199,18 @@ Editableform is linked with one of input types, e.g. 'text', 'select' etc.
             //get new value from input
             var newValue = this.input.input2value(); 
 
-            // validation: if validate returns truthy value - means error
+            // validation: if validate returns string or truthy value - means error
+            // if returns object like {newValue: '...'} => submitted value is reassigned to it
             var error = this.validate(newValue);
-            if (error) {
+            if ($.type(error) === 'object' && error.newValue !== undefined) {
+                newValue = error.newValue;
+                this.input.value2input(newValue);
+                if(typeof error.msg === 'string') {
+                    this.error(error.msg);
+                    this.showForm();
+                    return;
+                }
+            } else if (error) {
                 this.error(error);
                 this.showForm();
                 return;
@@ -500,6 +509,8 @@ Editableform is linked with one of input types, e.g. 'text', 'select' etc.
         send: 'auto', 
         /**
         Function for client-side validation. If returns string - means validation not passed and string showed as error.
+        Since 1.5.1 you can modify submitted value by returning object from `validate`: 
+        `{newValue: '...'}` or `{newValue: '...', msg: '...'}`
 
         @property validate 
         @type function