I am new in Django, Here I have added a correct code but it is not deleting the file. Please help me someone.
views.py:
def control_upload(request):
if request.method == 'POST':
form = ControlForm(request.POST, request.FILES)
if form.is_valid():
model_instance = form.save()
model_instance.save()
else:
form = ControlForm()
controlmachiness = Controlmachine.objects.all()
return render(request,'usermaster/control_uploadfile.html',{'form':form,'controlmachiness':controlmachiness})
def control_index(request):
controlmachines = Controlmachine.objects.all()
return render(request,"usermaster/control_show.html",{'controlmachines':controlmachines})
def control_destroy(request, id):
if request.method == 'POST':
controlmachine = Controlmachine.objects.get(id=id)
controlmachine.delete()
return HttpResponseRedirect('/usermaster/controlfile/')
models.py:
class Controlmachine(models.Model):
machine_name = models.CharField(max_length=100)
operation_no = models.IntegerField()
control_uploadfile = models.FileField(upload_to='control_files/')
class Meta:
db_table = "controlmachine"
def delete(self, *args, **kwargs):
self.machine_name.delete()
self.operation_no.delete()
self.control_uploadfile.delete()
super.delete(*args, *kwargs)
forms.py:
class ControlForm(forms.ModelForm):
class Meta:
model = Controlmachine
fields = ['machine_name', 'operation_no', 'control_uploadfile'] #https://docs.djangoproject.com/en/3.0/ref/forms/widgets/
widgets = { 'machine_name': forms.TextInput(attrs={ 'class': 'form-control' }),
'operation_no': forms.TextInput(attrs={ 'class': 'form-control' }),
'control_uploadfile': forms.ClearableFileInput(attrs={ 'class': 'form-control' }),
}
urls.py:
path('controlfile/',views.control_index,name='control_index'),
path('cdelete/<int:id>',views.control_destroy,name='control_destroy'),
path('controlupload/',views.control_upload,name='control_upload'),
path('upload/',views.upload,name='upload'),
path('save',views.save_machine,name='save_machine'),
control_show.html:
{% extends 'usermaster/home.html' %}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="http://code.jquery.com/jquery-1.11.1.min.js"></script>
<script src="https://cdn.datatables.net/1.10.16/js/jquery.dataTables.min.js"></script>
<script src="https://cdn.datatables.net/1.10.16/js/dataTables.bootstrap4.min.js"></script>
</head>
{% block body %}
<body>
<div class="container">
<div class="row">
<div class="col-md-12">
<div class="table-responsive">
<table id="bootstrapdatatable" class="table table-striped table-bordered" width="90%">
<thead>
<th><input type="checkbox" id="checkall" /></th>
<th>ID</th>
<th>Machine Name</th>
<th>Operation Number</th>
<th>File</th>
<th>Delete</th>
</thead>
<tbody>
{% for control in controlmachines %}
<tr>
<td><input type="checkbox" class="checkthis" /></td>
<td>{{ control.id }}</td>
<td>{{ control.machine_name }}</td>
<td>{{ control.operation_no }}</td>
<td>{{ control.control_uploadfile }}</td>
<td><p data-placement="top" data-toggle="tooltip" title="Delete"><a href="/usermaster/cdelete/{{ control.id }}" class="btn btn-danger btn-xs" data-title="Delete" data-toggle="modal" data-target="#delete" ><span class="glyphicon glyphicon-trash"></span></a></p></td>
</tr>
{% endfor %}
</tbody>
</table>
</div>
</div>
</div>
</div>
<script>
$(document).ready(function() {
$('#bootstrapdatatable').DataTable({
"aLengthMenu": [[3, 5, 10, 25, -1], [3, 5, 10, 25, "All"]],
"iDisplayLength": 3
}
);
} );
</script>
</body>
{% endblock %}
</html>
control_uploadfile.html:
{% extends "usermaster/home.html" %}
<html>
<head>
<title>Control File Upload</title>
</head>
{% block body %}
<body>
<p><h1>Control File Upload</h1></p>
<form method="post" enctype="multipart/form-data">
{% csrf_token %}
{{ form.as_p }}
<button type="submit" class="save btn btn-default">Save</button> <br><br>
</form>
</body>
{% endblock %}
</html>
Error I got
ValueError at /usermaster/cdelete/29
The view usermaster.views.control_destroy didn't return an HttpResponse object. It returned None instead.
Request Method: GET
Request URL: http://localhost:8000/usermaster/cdelete/29
Django Version: 4.0
Exception Type: ValueError
Exception Value:
The view usermaster.views.control_destroy didn't return an HttpResponse object. It returned None instead.
Exception Location: C:\Users\Manoj\AppData\Local\Programs\Python\Python39\lib\site-packages\django\core\handlers\base.py, line 309, in check_response
Python Executable: C:\Users\Manoj\AppData\Local\Programs\Python\Python39\python.exe
Python Version: 3.9.5
Python Path:
['C:\\Users\\Manoj\\Desktop\\sample\\mysite3',
'C:\\Users\\Manoj\\AppData\\Local\\Programs\\Python\\Python39\\python39.zip',
'C:\\Users\\Manoj\\AppData\\Local\\Programs\\Python\\Python39\\DLLs',
'C:\\Users\\Manoj\\AppData\\Local\\Programs\\Python\\Python39\\lib',
'C:\\Users\\Manoj\\AppData\\Local\\Programs\\Python\\Python39',
'C:\\Users\\Manoj\\AppData\\Local\\Programs\\Python\\Python39\\lib\\site-packages',
'C:\\Users\\Manoj\\AppData\\Local\\Programs\\Python\\Python39\\lib\\site-packages\\win32',
'C:\\Users\\Manoj\\AppData\\Local\\Programs\\Python\\Python39\\lib\\site-packages\\win32\\lib',
'C:\\Users\\Manoj\\AppData\\Local\\Programs\\Python\\Python39\\lib\\site-packages\\Pythonwin']
Server time: Mon, 24 Jan 2022 10:15:46 +0530
Here, It should delete uploaded file along with machine name and operation number. Please help me out to solve this. Please..
