残疾人专用选项与ngOptions

Question

我有一个选择下拉，就像这样：

<select ng-model="expressionClause.field" ng-options="o.fullPropertyName as o.displayName for o in model.discountExpressionProperties" ng-change="expressionClause.value = ''" required></select>

是否有可能增加对其中的两项渲染选项的“禁用”属性，而无需修改控制器？而不使用ngRepeat而不是ngOptions？

我已经试过这样：

<select ng-model="expressionClause.field" ng-options="o.fullPropertyName as o.displayName disable when o.displayName == 'Product ID' for o in model.discountExpressionProperties" ng-change="expressionClause.value = ''" required></select>

但我不认为我正确地使用它，因为我得到一个语法错误：

Error: [$parse:syntax] Syntax Error: Token 'disable' is an unexpected token at column 15 of the expression [o.displayName disable when o.displayName == 'Product ID'] starting at [disable when o.displayName == 'Product ID'].

LE：AngularJS V1 .3.20

Answer 1

Angular 1.4.0-beta.5的发行说明：

"ngOptions: add support for disabling an option (da9eac86, #638, #11017)" 

尝试更新您的Angular版本。