如何从 Bootstrap 的模态形式发布数据？

Question

I have a page using a modal to get the users email and I want to add it to a list of subscribers (which is a Django model). Here is the modal code for that:

<div id="notifications" class="modal hide fade" role="dialog" ara-labelledby="Notification" aria-hidden="true">
    <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-hidden="true">X</button>
        <h4>Subscribe to Status Notifications</h4>
    </div>
    <form>
        <div class="modal-body">
            <input type="email" placeholder="email"/>
            <p>This service will notify you by email should any issue arise that affects your plivo service.</p>
        </div>
        <div class="modal-footer">
            <input type="submit" value="SUBMIT" class="btn"/>
        </div>
    </form>
</div>

I tried to look in the Twitter Bootstrap doc but it really is minimal. I want to POST the data to a Django view that's listening for POST` requests.

This is the bare essential. I am using regex to compare the format of the email before storing the email id. So if the email does not match the regex the view returns an Invalid Email . So I would like to notify the user about that within the modal itself. But I really have no idea as to how to do this. Someone please help.

---

UPDATE 1

Tried this based on karthikr's answer:

<form id="subscribe-email-form" action="/notifications/subscribe/" method="post">
    <div class="modal-body">
    <input type="email" placeholder="email"/>
        <p>This service will notify you by email should any issue arise that affects your service.</p>
    </div>
    <div class="modal-footer">
    <input id="subscribe-email-submit" type="submit" value="SUBMIT" class="btn" />
    </div>
</form>

<script>
    $(function(){
       $('subscribe-email-form').on('submit', function(e){
            e.preventDefault();
            $.ajax({
                url: "/notifications/subscribe/",
                type: "POST",
                data: $("subscribe-email-form").serialize(),
                success: function(data){
                    alert("Successfully submitted.")
                }
            });
       }); 
    });
</script>

There is something that is confusing me. What about the onclick event of the modal button ?

I got it! I added name="Email" in the line <input type="email" placeholder="email"/>

The Django field is looking for the Email Field . So in my Django view the code is:

request.POST.get("Email", '')

So specifying the field name helps. But it takes me to the URL where I am posting. I want it to display a alert in the same page.

---

UPDATE 2

So part 1 is working. As in the posts are working. Now I need to show a modal for the success or failure.

Here's what I am trying. So I created this modal with a textarea :

<div id="subscription-confirm" class="modal hide fade in" aria-hidden="true">
    <div class="modal-header">
        <label id="responsestatus"></label>
    </div>
</div>

And the JavaScript:

<script>
    $(function(){
        $('#subscribe-email-form').on('submit', function(e){
            e.preventDefault();
            $.ajax({
                url: 'notifications/subscribe/',
                type: 'POST',
                data: $('#subscribe-email-form').serialize(),
                success: function(data){
                     $('#responsestatus').val(data);
                     $('#subscription-confirm').modal('show');    
                }
            });
        });
    });
</script>

So the modal comes up, but the data is not set into the label field of the modal .

Answer 1

You need to handle it via ajax submit.

Something like this:

$(function(){
    $('#subscribe-email-form').on('submit', function(e){
        e.preventDefault();
        $.ajax({
            url: url, //this is the submit URL
            type: 'GET', //or POST
            data: $('#subscribe-email-form').serialize(),
            success: function(data){
                 alert('successfully submitted')
            }
        });
    });
});

A better way would be to use a django form, and then render the following snippet:

<form>
    <div class="modal-body">
        <input type="email" placeholder="email"/>
        <p>This service will notify you by email should any issue arise that affects your plivo service.</p>
    </div>
    <div class="modal-footer">
        <input type="submit" value="SUBMIT" class="btn"/>
    </div>
</form>

via the context - example : {{form}} .

Answer 2

I was facing same issue not able to post form without ajax. but found solution , hope it can help and someones time.

<form name="paymentitrform" id="paymentitrform" class="payment"
                    method="post"
                    action="abc.php">
          <input name="email" value="" placeholder="email" />
          <input type="hidden" name="planamount" id="planamount" value="0">
                                <input type="submit" onclick="form_submit() " value="Continue Payment" class="action"
                                    name="planform">

                </form>

You can submit post form, from bootstrap modal using below javascript/jquery code : call the below function onclick of input submit button

    function form_submit() {
        document.getElementById("paymentitrform").submit();
   }  

Answer 3

You CAN include a modal within a form. In the Bootstrap documentation it recommends the modal to be a "top level" element, but it still works within a form.

You create a form, and then the modal "save" button will be a button of type="submit" to submit the form from within the modal.

<form asp-action="AddUsersToRole" method="POST" class="mb-3">

    @await Html.PartialAsync("~/Views/Users/_SelectList.cshtml", Model.Users)

    <div class="modal fade" id="role-select-modal" tabindex="-1" role="dialog" aria-labelledby="role-select-modal" aria-hidden="true">
        <div class="modal-dialog" role="document">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title" id="exampleModalLabel">Select a Role</h5>
                </div>
                <div class="modal-body">
                    ...
                </div>
                <div class="modal-footer">
                    <button type="submit" class="btn btn-primary">Add Users to Role</button>
                    <button type="button" class="btn btn-secondary" data-dismiss="modal">Cancel</button>
                </div>
            </div>
        </div>
    </div>

</form>

You can post (or GET) your form data to any URL. By default it is the serving page URL, but you can change it by setting the form action . You do not have to use ajax.

Mozilla documentation on form action