I cannot pass the value from the button to the entity-CodePudding

I'm trying to create a test mechanism, after ticking the right option, I want to save this option to the db via my model, but I can't map the value from the JavaScript to my model. How can I do that?

@model Exam.Models.ViewModels.QuestionMakerViewModel
<table  id="s1">
<tbody>
    <form asp-action="QuestionMaker" asp-controller="Teacher" method="post">
    <tr>
        <div >
            <label for="exampleFormControlTextarea1" >Question 1</label>
            <textarea  [email protected] id="exampleFormControlTextarea1" rows="10"></textarea>
        </div>
    </tr>
    <tr>
        <td  colspan="2">
            <table >
                <tbody>
                    <tr>
                        <div >
                            <button  id="A" type="button" onclick="clickFunc(this.id)">A</button>
                            <input type="text" [email protected]  placeholder=""
                                   aria-label="Example text with button addon" aria-describedby="button-addon1">
                        </div>
                    </tr>
                    <tr>
                        <div >
                            <button  type="button" id="B" onclick="clickFunc(this.id)">B</button>
                            <input type="text" [email protected]  placeholder=""
                                   aria-label="Example text with button addon" aria-describedby="button-addon1">
                        </div>
                    </tr>
                    <tr>
                        <div >
                            <button  type="button" id="C" onclick="clickFunc(this.id)">C</button>
                            <input type="text" [email protected]  placeholder=""
                                   aria-label="Example text with button addon" aria-describedby="button-addon1">
                        </div>
                    </tr>
                </tbody>
            </table>
            <button type="submit" onclick="clickSub()"  asp-action="QuestionMaker" asp-controller="Teacher" formmethod="post">Kaydet</button>
        </td>
    </tr>
    </form>
</tbody>

Here I got the results from the button id with javascript

<script type="text/javascript">
function clickFunc(answerId) {
    @Model.TrueAnswer=answerId;
}

CodePudding user response：

You can try to use a hidden input to keep the value of @Model.TrueAnswer,and then when click the button,change the value of the hidden input,and submit the form to action:

@model Exam.Models.ViewModels.QuestionMakerViewModel
<table  id="s1">
<tbody>
    <form id="myForm" asp-action="QuestionMaker" asp-controller="Teacher" method="post">
    <tr>
        <div >
            <label for="exampleFormControlTextarea1" >Question 1</label>
            <textarea  [email protected] id="exampleFormControlTextarea1" rows="10"></textarea>
        </div>
    </tr>
    <tr>
        <td  colspan="2">
            <table >
                <tbody>
                    <tr>
                        <div >
                            <button  id="A" type="button" onclick="clickFunc(this.id)">A</button>
                            <input type="text" [email protected]  placeholder=""
                                   aria-label="Example text with button addon" aria-describedby="button-addon1">
                        </div>
                    </tr>
                    <tr>
                        <div >
                            <button  type="button" id="B" onclick="clickFunc(this.id)">B</button>
                            <input type="text" [email protected]  placeholder=""
                                   aria-label="Example text with button addon" aria-describedby="button-addon1">
                        </div>
                    </tr>
                    <tr>
                        <div >
                            <button  type="button" id="C" onclick="clickFunc(this.id)">C</button>
                            <input type="text" [email protected]  placeholder=""
                                   aria-label="Example text with button addon" aria-describedby="button-addon1">
                        </div>
                    </tr>
                </tbody>
            </table>
            <input name="TrueAnswer" id="TrueAnswer" hidden />
            <button type="submit" onclick="clickSub()"  asp-action="QuestionMaker" asp-controller="Teacher" formmethod="post">Kaydet</button>
        </td>
    </tr>
    </form>
</tbody>

js:

function clickFunc(answerId) {
    $("#TrueAnswer").val(answerId);
    $("#myForm").submit();
}

CodePudding user response：

I got the result by making a small change in the answer you gave, I have been trying for hours, I have solved the problem thanks to you, thank you for your help.

    function clickFunc(answerId) {
    $("#TrueAnswer").val(answerId);
    $("#myFunction").submit();
}

When we submitted the form, it was sending the model to the controller without filling the texts. I got the solution by typing function instead of form.