From d2ea27e2d40f839cb98d96558f18d8afeecbb148 Mon Sep 17 00:00:00 2001
From: Armano <armano2@users.noreply.github.com>
Date: Tue, 4 Dec 2018 03:30:10 +0100
Subject: [PATCH] Fix: filters validation in `valid-v-model`

---
 lib/rules/valid-v-model.js       | 9 +++++++--
 tests/lib/rules/valid-v-model.js | 4 ++++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/lib/rules/valid-v-model.js b/lib/rules/valid-v-model.js
index d004ef3ba..c83bc06c1 100644
--- a/lib/rules/valid-v-model.js
+++ b/lib/rules/valid-v-model.js
@@ -44,9 +44,12 @@ function isValidElement (node) {
  * @returns {boolean} `true` if the node can be LHS.
  */
 function isLhs (node) {
-  return node != null && (
+  return node !== null && (
     node.type === 'Identifier' ||
-    node.type === 'MemberExpression'
+    node.type === 'MemberExpression' || (
+      node.type === 'VFilterSequenceExpression' &&
+      isLhs(node.expression)
+    )
   )
 }
 
@@ -130,6 +133,7 @@ module.exports = {
             })
           }
         }
+
         if (!utils.hasAttributeValue(node)) {
           context.report({
             node,
@@ -137,6 +141,7 @@ module.exports = {
             message: "'v-model' directives require that attribute value."
           })
         }
+
         if (node.value) {
           if (!isLhs(node.value.expression)) {
             context.report({
diff --git a/tests/lib/rules/valid-v-model.js b/tests/lib/rules/valid-v-model.js
index f5abd2dde..a00344aa6 100644
--- a/tests/lib/rules/valid-v-model.js
+++ b/tests/lib/rules/valid-v-model.js
@@ -114,6 +114,10 @@ tester.run('valid-v-model', rule, {
     {
       filename: 'test.vue',
       code: '<template><input v-bind:type="a" v-model="b"></template>'
+    },
+    {
+      filename: 'test.vue',
+      code: '<template><input v-model="xx | myfilter"></template>'
     }
   ],
   invalid: [