I am taking a course on Udemy and the instructor doesn’t include a method
attribute in the form tag. But as you suggested, Deepak, I went ahead and
added method="get" to my form tag in my home.html template. So line 7 now
reads: <form action="{% url 'home' %}" method="get">
I am still encountering the MultiValueDictKeyError.
Here is the traceback again:
MultiValueDictKeyError at /
'ccEntry'
Request Method: GET
Request URL: http://127.0.0.1:8000/
Django Version: 2.0.2
Exception Type: MultiValueDictKeyError
Exception Value:
'ccEntry'
Exception Location:
/home/<user>/.local/lib/python3.7/site-packages/django/utils/datastructures.py
in __getitem__, line 79
Python Executable: /usr/sbin/python
Python Version: 3.7.2
Python Path:
['/home/<user>/dev/projects/python/2018-and-2019/cel2fah-original_with_CC-redact-project-_Django202/first_project_attempt',
'/usr/lib/python37.zip',
'/usr/lib/python3.7',
'/usr/lib/python3.7/lib-dynload',
'/home/<user>/.local/lib/python3.7/site-packages',
'/usr/lib/python3.7/site-packages',
'/usr/lib/python3.7/site-packages/setuptools-40.6.2-py3.7.egg']
Server time: Thu, 7 Mar 2019 20:11:44 +0000
Environment:
Request Method: GET
Request URL: http://127.0.0.1:8000/
Django Version: 2.0.2
Python Version: 3.7.2
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Traceback:
File
"/home/<user>/.local/lib/python3.7/site-packages/django/utils/datastructures.py"
in __getitem__
77. list_ = super().__getitem__(key)
During handling of the above exception ('ccEntry'), another exception
occurred:
File
"/home/<user>/.local/lib/python3.7/site-packages/django/core/handlers/exception.py"
in inner
35. response = get_response(request)
File
"/home/<user>/.local/lib/python3.7/site-packages/django/core/handlers/base.py"
in _get_response
128. response = self.process_exception_by_middleware(e,
request)
File
"/home/<user>/.local/lib/python3.7/site-packages/django/core/handlers/base.py"
in _get_response
126. response = wrapped_callback(request, *callback_args,
**callback_kwargs)
File
"/home/<user>/dev/projects/python/2018-and-2019/cel2fah-original_with_CC-redact-project-_Django202/first_project_attempt/first_project_attempt/views.py"
in home
5. number = request.GET['ccEntry']
File
"/home/<user>/.local/lib/python3.7/site-packages/django/utils/datastructures.py"
in __getitem__
79. raise MultiValueDictKeyError(key)
Exception Type: MultiValueDictKeyError at /
Exception Value: 'ccEntry'
Request information
USER
AnonymousUser
GET
No GET data
POST
No POST data
FILES
No FILES data
On Thursday, March 7, 2019 at 2:50:00 PM UTC-5, Deepak Chhitarka wrote:
>
> In your home.html template, you forgot to write method="get" . Which I
> think is causing the problem here.
>
> On Fri 8 Mar, 2019, 12:03 AM Matthew Pava, <matthe...@iss.com
> <javascript:>> wrote:
>
>> Please just paste the error in the email message. The error message that
>> you have mentions a ‘method’ object, which is not present in the code that
>> you have sent to us. That would be where the problem is.
>>
>>
>>
>>
>>
>>
>>
>> *From:* django...@googlegroups.com <javascript:> [mailto:
>> django...@googlegroups.com <javascript:>] *On Behalf Of *drone4four
>> *Sent:* Thursday, March 7, 2019 11:29 AM
>> *To:* Django users
>> *Subject:* Re: Django credit card redaction app - -
>> MultiValueDictKeyError
>>
>>
>>
>> Thanks, Sam for the help.
>>
>>
>>
>> You wrote:
>>
>>
>>
>> I would be careful how you pass the data on get, somewhere in your front
>> end code you are probably not passing the data through as you expected.
>> Instead of using .GET, use .GET.get to get your data. This will either
>> return the value you want, or none.
>>
>>
>>
>> I looked up GET.get Django and found an SO post titled, “Django
>> request.GET
>> <https://stackoverflow.com/questions/3500859/django-request-get>” which
>> has quite a few up votes. Based on that SO answer, In my views.py I changed
>> the line (where I declare the number variable) from `number =
>> request.GET['ccEntry']` to `number = request.GET.get['ccEntry', None]`
>>
>>
>>
>> That gives a different error (a type error this time):
>> https://pastebin.com/L81LVtzi
>>
>>
>>
>> You also mentioned my front end. I had included the template in my
>> original post. I have since refined it so it is more readable. Here is my
>> improved home.html template:
>>
>>
>>
>> <html>
>>
>>
>>
>> <head>
>>
>> <title> Search </title>
>>
>> </head>
>>
>> <body>
>>
>> <center>
>>
>> <form action="{% url 'home' %}">
>>
>> <div>
>>
>> <h3>Enter your fake Chuckee Cheese Neptune credit card number!</h3>
>>
>> <input type="number" id="number" name="ccEntry" required placeholder="
>> " pattern=".{16,16}"/>
>>
>> <div class="requirements"> Must be a 16 digit number. </div>
>>
>> <input type="submit" value="Redact!!!"/>
>>
>> </div>
>>
>> </form>
>>
>> <h3>Original Card Number:</h3>
>>
>> {{ number }}
>>
>> <h3>Redacted Card Number:</h3>
>>
>> {{ redacted_num }}
>>
>> <h3> Did this work?</h3>
>>
>> </center>
>>
>> </body>
>>
>> </html>
>>
>>
>>
>>
>>
>> Sam, you also suggested:
>>
>>
>>
>> I think you have made the error of not passing your data to the get
>> header as you didn't explicitly write this on the form element.
>>
>>
>>
>> I did explicitly include my data in my form element as you can see in the
>> above template.
>>
>>
>>
>> Check the URL and log the get object in Django to make sure the data is
>> actually appearing in both.
>>
>>
>>
>> The data is present as “ccEntry” in both home.html and in views.py.
>>
>>
>>
>>
>>
>>
>> On Thursday, March 7, 2019 at 10:42:25 AM UTC-5, Sam Taiwo wrote:
>>
>> I would be careful how you pass the data on get, somewhere in your front
>> end code you are probably not passing the data through as you expected.
>> Instead of using .GET, use .GET.get to get your data. This will either
>> return the value you want, or none. I think you have made the error of not
>> passing your data to the get header as you didn't explicitly write this on
>> the form element. Check the URL and log the get object in Django to make
>> sure the data is actually appearing in both.
>>
>>
>>
>> On Thu, Mar 7, 2019, 13:52 drone4four <drone...@gmail.com> wrote:
>>
>> Hello!
>>
>>
>>
>> I’m trying to run a basic Django app which redacts a 16 digit number
>> entered by the user. I had a it running a few minutes ago. I’m not sure
>> what I changed, but now I am getting a MultiValueDictKeyError. I’ve triple
>> checked every variable. The only dictionary in my project is in views.py at
>> line 7. As far as I can tell, it’s all accurate and positioned correctly. I
>> don’t recall changing this dictionary or any other operator around this
>> line. I’m stumped. What would you people suggest? Have a look at my setup.
>>
>>
>>
>> *Here is the error and traceback in full:* https://pastebin.com/QwSrmAJx
>>
>>
>>
>> *Here is my urls.py:*
>>
>> from django.conf.urls import include, url
>>
>>
>>
>> from django.contrib import admin
>>
>> from django.urls import path
>>
>> from . import views
>>
>>
>> urlpatterns = [
>>
>> url(r'^admin/', admin.site.urls),
>>
>> url(r'^$', views.home, name='home'),
>>
>>
>>
>>
>>
>> *views.py:*
>>
>> from django.http import HttpResponse
>>
>>
>>
>> from django.shortcuts import render
>>
>>
>> def home(request):
>>
>> number = request.GET['ccEntry']
>>
>> redacted_num = 'xxxx xxxx xxxx {}'.format(number[-4:])
>>
>> return render(request, 'home.html', {'number':number, 'redacted_num':
>> redacted_num})
>>
>>
>>
>>
>>
>> *home.html template:*
>>
>> <style></style>
>>
>>
>>
>>
>> <center>
>>
>> <form action="{% url 'home' %}">
>>
>> <div> <br> <br> <br> <br>
>>
>> <h3>Enter your fake Chuckee Cheese Neptune credit card number!</h3>
>>
>> <input type="number" id="number" name="ccEntry" required placeholder="
>> " pattern=".{16,16}"/>
>>
>> <br>
>>
>> <br>
>>
>> <div class="requirements">
>>
>> Must be a 16 digit number.
>>
>> </div>
>>
>> <br>
>>
>> <input type="submit" value="Redact!!!"/>
>>
>> </div>
>>
>> </form>
>>
>> <br>
>>
>> <h3>Original Card Number:</h3>
>>
>> <br>
>>
>> {{ number }}
>>
>> <br>
>>
>> <h3>Redacted Card Number:</h3>
>>
>> <br>
>>
>> {{ redacted_num }}
>>
>> <br>
>>
>> <h3> Did this work?</h3>
>>
>> <br>
>>
>> </center>
>>
>>
>>
>>
>>
>> --
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