How Can I Append Model Objects to FormData in MVC and Retrieve Them in the Controller?

Add the model object to FormData

When transmitting data from the view from the view to the controller, the entire model object is usually required. However, by default, such objects will be converted to JSON string when submitting the form. This makes it difficult to retrieve objects in the controller.

In order to maintain the integrity of the model object, consider using FormData. This object allows various data types, including model objects.

javascript:

To add the model object to FormData, use the APPEND () method as follows:

MVC:

<code class="language-javascript">var formdata = new FormData();
formdata.append("model", model); // model 是 YourModelType 的实例</code>

In the controller, you can use the request.form ["Model"] method to retrieve the model. However, it should be noted that the model is still the JSON string. To convert it back to the object, use the deserialize () method:

By following these steps, you can effectively pass and retrieve model objects through FormData in the MVC, so as to make the communication between the view and the controller more seamless.

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