怎么知道的ModelState包含错误 [英] How know if ModelState contains errors

问题描述

当一个形式发布在我的控制器，我做以下检查：

When a form is posted in my controller, I make the following check:

if(ModelState.IsValid)

如果模型无效，错误将被添加到的ModelState 。然后，该模型被传递到与验证摘要视图。

If the model is not valid, errors are added to the ModelState. The model is then passed to the view with validation summary.

不过，我想检查是否的ModelState 有从jQuery内就绪处理错误，所以我可以添加一些额外的行为，如果表单有错误。这可能吗？

However, I want to check if the ModelState has errors from inside the jQuery ready handler, so that I can add some additional behavior if the form has errors. Is that possible?

推荐答案

您可以吐全局JavaScript变量：

You could spit global javascript variable:

<script type="text/javascript">
    var isValid = @Html.Raw(Json.Encode(ViewData.ModelState.IsValid));
</script>

和则：

$(function() {
    if (!isValid) {
        alert('opa');
    }
});

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