Form action is not calling the required function from views.py in Django

Question

I am new in Django and doing my first project in it. I had made a form in my index.html file and that form took an image, and sent it to a predictImage function in views.py file. The predictImage function applied YOLO model on the image and returned the image with labels to the same index.html page.

This was working fine and I was getting the required results. After the submit button was clicked, I was getting redirected to index.html/predictImage where the results were being shown. (I had conditions added in my index.html to show the results)

Then, I decided to add a Users Model and made a Login page for me, user was required to login before he could upload the image. For this, I added sessions as well.

Now, I created a Photo model, to store every photo that every user uploads. All of this was successfully made but now, when I tried to do the same thing again, i.e., upload the image and submit it, it didn't work and it instead redirected me to index.html

I tried to debug this, and I found out that I was not even going to views.predictImage when I clicked the submit button. I don't seem to understand why this was happening, even though the only two new things that I added in my index.html were a hidden input file (to get the value of username from session) and a Logout Button to log out from the session.

Here is my models.py file (I added Photos Model later on)

from django.db import models
import datetime
import os
# Create your models here.


class Users(models.Model):
    username = models.CharField('User Name', null=False, max_length = 50)
    password = models.CharField('User Password', max_length=50)

    def __str__(self):
        return self.username

def filepath(request, filename):
    old_filename = filename
    timeNow = datetime.datetime.now().strftime('%Y%m%d%H:%M:%S')
    filename = "%s%s" % (timeNow, old_filename)
    return os.path.join('uploads/', filename)

class Photo(models.Model):
    id = models.AutoField(primary_key=True)
    image = models.ImageField(upload_to=filepath) 
    uploader = models.ForeignKey(Users, default=None, on_delete=models.CASCADE)

This is my urls.py file, no changes were made to this.

from django.contrib import admin
from django.urls import path, re_path 
from firstApp import views
from django.conf.urls.static import static 
from django.conf import settings

urlpatterns = [
    re_path('admin/', admin.site.urls),
    re_path('index', views.index, name = 'index'),
    re_path('login', views.login, name='login'),
    re_path('logout', views.logout, name='logout'),
    re_path('', views.login, name="Login"),
    # re_path('', views.login_submit, name='Home'),
    re_path('predictImage', views.predictImage, name='predictImage'),
]

urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

This is my views.py file

@csrf_exempt
def login(request):
    if request.session.has_key('is_logged'):
        return redirect('index')
    if request.POST:
        if 'user_name' not in request.POST:
            return render(request, 'login.html')
        username_entry = request.POST['user_name']
        password = request.POST['password']
        count = Users.objects.filter(username=username_entry).count()
        if count > 0:
            user_password = Users.objects.values('password').filter(username=username_entry)[0]
            if password == user_password['password']:
                request.session['is_logged'] = True
                request.session['user_id'] = request.POST['user_name']
                return redirect('index')
            else:
                messages.error(request, "Invalid Password")
                return render(request, 'login.html')
        else:
            messages.error(request, "Invalid Username")
            return render(request, 'login.html')
    else:
        return render(request, 'login.html')
    


def index(request):
    if request.session.has_key('is_logged'):
        current_user_id= request.session['user_id']
        return render(request, 'index.html', {'ID':current_user_id})
    else:
        return redirect('login')


    # context = {'a':1}
    # return render(request, 'index.html', context)

def predictImage(request):
    username = request.POST.get('username')
    print("HEREEEE: ", username) # was using to check if this function is being called or not
    # All the below lines are irrelevant to the bug
    # They are only saving the Image file and calling YOLO Model Function to get Resultant image
    # All of this was worknig before as well 
    fileObj = request.FILES['filePath']
    fs = FileSystemStorage()
    filePathName = fs.save(fileObj.name, fileObj)
    filePathName = fs.url(filePathName)
    testimage = '.'+filePathName
    img_result, resultant_array, total_objects = detect_image(testimage)
    cv2.imwrite("media/results/" + fileObj.name, img=img_result)

    context = {'filePathName':"media/results/"+fileObj.name, 'predictedLabel': list(resultant_array.keys()), 'values': list(resultant_array.values()), 'total_objects': total_objects}
    #context = {}
    return render(request, 'index.html', context)

def logout(request):
    del request.session['is_logged']
    return redirect('login')

And this is my index.html file (only containing the portion where the form exists, I can share the rest of the file if needed but that isn't linked to this problem as far as I know)

  {% csrf_token %}


  

    
    

      
      

      
      
        Uplaod Image
      
      
      
      
      
    

        Logout

Form action is not calling the required function from views.py in Django

0 Answers