Implementing a basic dropdown menu with knockout.js

Hello, I need to implement a simple dropdown list in an existing form using MVC architecture with SQL server. Our frontend utilizes TypeScript with Knockout.

The adjustment required is straightforward - adding a dropdown list with 3 values: "Not chosen", "Yes", and "No". The model property is of type bool?. The initial value should be "Not chosen", and if the user saves the form with this value, "null" should be saved to the DB.

I attempted the following:

<select id="selectForTaxPurposes"
        data-bind="booleanValue: $data.model.forTaxPurposes,
    <option id="nothing" value="null">Choose</option>
    <option id="yes" value="true">Yes</option>
    <option id="no" value="false">Ne</option>
</select>¨

However, the form fails to load. Does anyone have any advice on how to address this issue? I've come across some solutions, but they seem overly complex for this scenario.

Answer №1

Try using the 'value' binding instead of booleanValue. Don't forget to take a look at the link I shared below: Knockoutjs (version 2.1.0): bind boolean value to select box

Additionally, it would be helpful if you could share your model for further assistance.

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