How to POST the data from a modal form of bootstra

问题:

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 thats 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:

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. Heres 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.

回答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}}.

回答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();
   }  

回答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