MAGETWO-46646: Validate Quantity fields depends to "Qty Uses Decimals" Option

Author: Bohdan Korablov

app/code/Magento/CatalogInventory/Ui/DataProvider/Product/Form/Modifier/AdvancedInventory.php

@@ -195,7 +195,8 @@ private function prepareMeta()
                 'additionalClasses' => 'admin__field-small',
                 'dataScope' => 'qty',
                 'validation' => [
-                    'validate-number' => true
+                    'validate-number' => true,
+                    'validate-digits' => true,
                 ],
                 'imports' => [
                     'handleChanges' => '${$.provider}:data.product.stock_data.is_qty_decimal',

app/code/Magento/CatalogInventory/view/adminhtml/ui_component/product_form.xml

@@ -95,6 +95,7 @@
                         <item name="dataScope" xsi:type="string">quantity_and_stock_status.qty</item>
                         <item name="validation" xsi:type="array">
                             <item name="validate-number" xsi:type="boolean">true</item>
+                            <item name="validate-digits" xsi:type="boolean">true</item>
                         </item>
                         <item name="sortOrder" xsi:type="number">200</item>
                         <item name="scopeLabel" xsi:type="string">[GLOBAL]</item>
@@ -170,6 +171,7 @@
                             <item name="dataScope" xsi:type="string">min_sale_qty</item>
                             <item name="validation" xsi:type="array">
                                 <item name="validate-number" xsi:type="boolean">true</item>
+                                <item name="validate-digits" xsi:type="boolean">true</item>
                             </item>
                             <item name="value" xsi:type="object">Magento\CatalogInventory\Model\Source\StockConfiguration</item>
                             <item name="imports" xsi:type="array">
@@ -468,6 +470,7 @@
                             <item name="dataScope" xsi:type="string">qty_increments</item>
                             <item name="validation" xsi:type="array">
                                 <item name="validate-number" xsi:type="boolean">true</item>
+                                <item name="validate-digits" xsi:type="boolean">true</item>
                             </item>
                             <item name="value" xsi:type="object">Magento\CatalogInventory\Model\Source\StockConfiguration</item>
                             <item name="imports" xsi:type="array">

app/code/Magento/CatalogInventory/view/adminhtml/web/js/components/qty-validator-changer.js

@@ -10,26 +10,18 @@ define([
 
     return Abstract.extend({
         defaults: {
-            numberValidator: {
-                'validate-number': true
-            },
-            digitsValidator: {
-                'validate-digits': true
-            },
             valueUpdate: 'input'
         },
 
         /**
          * Change validator
          */
         handleChanges: function (value) {
-            if (value === 1) {
-                this.validation = this.numberValidator;
-                this.validate();
-            } else {
-                this.validation = this.digitsValidator;
-                this.validate();
-            }
+            var isDigits = value !==1;
+
+            this.validation['validate-number'] = !isDigits;
+            this.validation['validate-digits'] = isDigits;
+            this.validate();
         }
     });
 });