修复表单只有一个input时按回车自动提交的问题，修复级联类型判断错误的问题

Author: cq-panda

Vol.Vue/src/components/basic/ViewGridConfig/methods.js

@@ -468,14 +468,16 @@ let methods = {
           form[key].splice(0)
           //  this.$set(form, key, newVal);
           form[key].push(...newVal);
-          this.$nextTick(() => {
-            //封装后iview原生监听不到model变化，后面再调试看看2020.11.01
-            _cascaderParentTree = _cascaderParentTree || [];
-            _cascaderParentTree.forEach(c => {
-              c.label = c.value;
-            })
-            this.$refs.form.$refs[key][0].selected = _cascaderParentTree;
-          });
+          if (kv_type == "cascader") {
+            this.$nextTick(() => {
+              //封装后iview原生监听不到model变化，后面再调试看看2020.11.01
+              _cascaderParentTree = _cascaderParentTree || [];
+              _cascaderParentTree.forEach(c => {
+                c.label = c.value;
+              })
+              this.$refs.form.$refs[key][0].selected = _cascaderParentTree;
+            });
+          }
         } else {
           form[key] = newVal;
         }

Vol.Vue/src/components/basic/VolForm.vue

@@ -2,7 +2,8 @@
   <Form ref="formValidate"
         :style="{ width: width > 0 ? width + 'px' : '100%' }"
         :model="_formFields"
-        :label-width="labelWidth">
+        :label-width="labelWidth"
+        @submit.native.prevent>
     <!-- :rules="ruleValidate" -->
     <slot name="header"></slot>
     <Row class="line-row"

开发版dev/Vue.NetCore/Vol.Vue/src/components/basic/ViewGridConfig/methods.js

@@ -468,14 +468,16 @@ let methods = {
           form[key].splice(0)
           //  this.$set(form, key, newVal);
           form[key].push(...newVal);
-          this.$nextTick(() => {
-            //封装后iview原生监听不到model变化，后面再调试看看2020.11.01
-            _cascaderParentTree = _cascaderParentTree || [];
-            _cascaderParentTree.forEach(c => {
-              c.label = c.value;
-            })
-            this.$refs.form.$refs[key][0].selected = _cascaderParentTree;
-          });
+          if (kv_type == "cascader") {
+            this.$nextTick(() => {
+              //封装后iview原生监听不到model变化，后面再调试看看2020.11.01
+              _cascaderParentTree = _cascaderParentTree || [];
+              _cascaderParentTree.forEach(c => {
+                c.label = c.value;
+              })
+              this.$refs.form.$refs[key][0].selected = _cascaderParentTree;
+            });
+          }
         } else {
           form[key] = newVal;
         }

开发版dev/Vue.NetCore/Vol.Vue/src/components/basic/VolForm.vue

@@ -2,7 +2,8 @@
   <Form ref="formValidate"
         :style="{ width: width > 0 ? width + 'px' : '100%' }"
         :model="_formFields"
-        :label-width="labelWidth">
+        :label-width="labelWidth"
+        @submit.native.prevent>
     <!-- :rules="ruleValidate" -->
     <slot name="header"></slot>
     <Row class="line-row"