From a6169d1eb71d64eacddf1738e72d21725e2bff00 Mon Sep 17 00:00:00 2001
From: Hiroki Osame <hiroki.osame@gmail.com>
Date: Wed, 14 Mar 2018 00:05:58 +0900
Subject: [PATCH] fix(model): fix static input type being overwritten by v-bind
 object (#7819)

fix #7811
---
 src/platforms/web/compiler/modules/model.js          |  2 +-
 test/unit/features/directives/model-checkbox.spec.js | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/platforms/web/compiler/modules/model.js b/src/platforms/web/compiler/modules/model.js
index a7426c0204f..8d784fe4695 100644
--- a/src/platforms/web/compiler/modules/model.js
+++ b/src/platforms/web/compiler/modules/model.js
@@ -34,7 +34,7 @@ function preTransformNode (el: ASTElement, options: CompilerOptions) {
     if (map[':type'] || map['v-bind:type']) {
       typeBinding = getBindingAttr(el, 'type')
     }
-    if (!typeBinding && map['v-bind']) {
+    if (!map.type && !typeBinding && map['v-bind']) {
       typeBinding = `(${map['v-bind']}).type`
     }
 
diff --git a/test/unit/features/directives/model-checkbox.spec.js b/test/unit/features/directives/model-checkbox.spec.js
index e102af62609..2b73e23d302 100644
--- a/test/unit/features/directives/model-checkbox.spec.js
+++ b/test/unit/features/directives/model-checkbox.spec.js
@@ -337,4 +337,15 @@ describe('Directive v-model checkbox', () => {
       expect(vm.$el.children[1].textContent).toBe('false')
     }).then(done)
   })
+  
+  // #7811
+  it('type should not be overwritten by v-bind', () => {
+    const vm = new Vue({
+      data: {
+        test: true
+      },
+      template: '<input type="checkbox" v-model="test" v-bind="$attrs">'
+    }).$mount()
+    expect(vm.$el.type).toBe('checkbox')
+  })
 })