Having trouble with Django's submit POST method for creating objects

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I have successfully implemented a feature where the page does not reload upon clicking the submit button.

To achieve this, I filled out the form and inspected the page source code. The form structure was as follows: https://i.sstatic.net/9iOeR.png

The corresponding source code displayed the following:

 <div id="logModal" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
     <div class="modal-dialog">
         <div class="modal-content">

         <div class="modal-header">
           <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
           <h4 class="modal-title" id="myModalLabel">Add Log In or Out </h4>
         </div>
         <div class="modal-body">


             <form method='POST' action='' >
              <input type='hidden' name='csrfmiddlewaretoken' value='LcLKE7jeFQWslds3i6vFM3MdBlIK26Pie2pIu5DYK68jCjzggfO7y1rjKrrZqKcc' />
             
             ... (remaining HTML code)
                

I encountered an issue where my input fields were not showing up properly. Particularly confusing was the presence of this line: <"name="logout_date" type="text" value="2017-01-10">

This raised questions about the source of this predefined value.


In my attempt to address this issue, I tried something like this:

https://i.sstatic.net/oqEU9.png

The user's interaction involves checking checkboxes to select sample pieces for creating logout records, followed by clicking the logout button. This action leads to another page with a Bootstrap Modal displaying the logout form:

https://i.sstatic.net/0Nis6.png

However, after filling out the forms and clicking SAVE, nothing happens. Below, I will provide relevant code snippets along with an explanation of my troubleshooting attempts.

Logout Model:

... (model definition)

Logout Form:

... (form definition)

update_sample_logout View.py:

... (view function definition)

Logout Template:

... (template structure)

The solution architecture relies on the 'projstatus:project_detail' main page, where users select samples for logging out. Upon clicking the logout button, the action serves as a submission trigger for the form.

... (relevant form in template)

By diving into debugging, I attempted to print a debug statement within the view function but discovered that even after submitting the form by clicking SAVE, nothing occurred - not even the debug print statement. This suggests that the update_sample_logout function fails to recognize the POST request, potentially due to invalid form data provided.

Moreover, I validated that the samples selection passed to update_sample_logout via GET is accurate and contains the selected items.

Your insights and assistance are appreciated!

Answer №1

If you're facing issues, follow these steps to troubleshoot:

  1. Ensure that the page reloads when you click the Submit button;
  2. Review the page source code to confirm the form content is accurate;
  3. Check if all fields on the logout page are filled with correct values before clicking Submit;
  4. To address the issue, modify your code and include an "else" section as shown below:

    def update_sample_logout(request, project_id):

    if request.method == 'GET':
        ......
    
    project = Project.objects.get(id=project_id)
    
    log_form = LogOutForm(request.POST or None, request.FILES or None)
    if request.method == 'POST':
        if log_form.is_valid():
            ......
        ***else:
            # Redirect to another page or display relevant information.***
    
  5. If everything seems fine, temporarily comment out this section as illustrated below:

    if log_form.is_valid():
        # in_or_out = log_form.cleaned_data['in_or_out']
        # logout_date = log_form.cleaned_data['logout_date']
        # logout_by = log_form.cleaned_data['logout_by']
        # out_shipping_method_tracking_number =  log_form.cleaned_data['out_shipping_method_tracking_number']
        # out_notes = log_form.cleaned_data['out_notes']
    

Test each step individually to identify the problem area.

Best of luck!

Answer №2

It appears that your code is error-free.

It seems like you may be missing the loglist GET parameter at some point, causing the view to redirect you to the "projstatus:project_detail" page.

Answer №3

Kindly review this particular section:

if 'loglist' in request.GET:
    sample_detail_list = request.GET.getlist('loglist')
    samples = SampleDetail.objects.filter(id__in = sample_detail_list)
else:
    messages.error(request, "No sample selected" )
    return HttpResponseRedirect(reverse('projstatus:project_detail', args=(project_id,)))

Upon completing the form and selecting the "SAVE" button, the request method will be set to "POST", directing the page to projstatus:project_detail.

If you wish to analyze the method within the same function, you can utilize the following approach:

def update_sample_logout (request, project_id):

    if request.method == 'GET':
        if 'loglist' in request.GET:
            sample_detail_list = request.GET.getlist('loglist')
            samples = SampleDetail.objects.filter(id__in = sample_detail_list)
        else:
            messages.error(request, "No sample selected" )
            return HttpResponseRedirect(reverse('projstatus:project_detail', args=(project_id,)))


    project = Project.objects.get(id = project_id)

    log_form = LogOutForm(request.POST or None, request.FILES or None)


    if request.method == 'POST':
        if log_form.is_valid():
            ......

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