fix(model): fix array index binding for v-model checkbox (vuejs#7671)

Closes vuejs#7670
aJean · Aug 19, 2020 · 689ca34 · 689ca34
1 parent f1c1db9
commit 689ca34
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/platforms/web/compiler/directives/model.js b/src/platforms/web/compiler/directives/model.js
@@ -86,8 +86,8 @@ function genCheckboxModel (
     'if(Array.isArray($$a)){' +
       `var $$v=${number ? '_n(' + valueBinding + ')' : valueBinding},` +
           '$$i=_i($$a,$$v);' +
-      `if($$el.checked){$$i<0&&(${value}=$$a.concat([$$v]))}` +
-      `else{$$i>-1&&(${value}=$$a.slice(0,$$i).concat($$a.slice($$i+1)))}` +
+      `if($$el.checked){$$i<0&&(${genAssignmentCode(value, '$$a.concat([$$v])')})}` +
+      `else{$$i>-1&&(${genAssignmentCode(value, '$$a.slice(0,$$i).concat($$a.slice($$i+1))')})}` +
     `}else{${genAssignmentCode(value, '$$c')}}`,
     null, true
   )