MultiValueDictKeyError at /search/ when using post request in django - django

Question

I am Unable to get query, which user is searching for from a POST request
Template file
<!-- search bar -->
<form action="{% url 'search' %}" method="post">{% csrf_token %}
<div class="container py-3 row">
<div class="col-md-8 offset-2">
<div class="input-group">
<input name="searchfieldText" type="text" class="form-control" placeholder="Search">
<button class="btn btn-danger" type="submit">Search</button>
</div>
</div>
</div>
</form>
urls.py
......
path('search/', views.search,name='search'),
.....
views.py
def search(request):
usr_qry= request.POST['searchfieldText']
print(usr_qry)
# and some more code which is irrelavent to paste here
.....
Complete views.py
from django.db.models.query_utils import Q
from App_wfi_Community import signals, urls
from django.shortcuts import render
from django.http import request, HttpResponseRedirect, HttpResponse
# import the models
from .models import Question, Answer, Comment, Upvote, DownVote, Upvote_record
# import paginator for pagination
from django.core.paginator import Paginator
# import forms
from .forms import Write_Answer_form, CommentForm
# import user
from django.contrib.auth.models import User
# import timezone for update function
from django.utils import timezone
# reverse for efficient url redirecting
from django.urls import reverse
from django.shortcuts import redirect
# import helper functions
from App_wfi_Community.view_helpers import *
# custom middleware
from App_wfi_Community.decorators import authentication_required, welcome_user_auth
# Create your views here.
# functions to called in views
def getPageObject(request, all_qns):
"""Returns the page object of Questions"""
paginator = Paginator(all_qns, 4, orphans=3)
pageNo = request.GET.get('page')
def getTags(RequestedQuestion):
"""Returns the Tags with comma seprated(if available)"""
# get tags from Question model
Question_tags = RequestedQuestion.Tags
# check if tag are not empty
if Question_tags != None:
Tags = Question_tags.split(',')
else:
Tags = Question_tags
# return the tags
return Tags
def get_save_form_data(RequestedQuestion, request, fom):
"""get data from form & save to DB"""
related_question = RequestedQuestion
detail = fom.cleaned_data['detail']
ansGiver = User.objects.get(pk=request.user.id)
ans = Answer(AnsGiver=ansGiver,
related_question=related_question, detail=detail)
ans.save()
# functions to process and send data to templates
#welcome_user_auth
def index(request):
# check if user is typing something
all_qns = Question.objects.all().order_by('-id')
# passing all questions to paginator with 4 question for one page
paginator = Paginator(all_qns, 6, orphans=2)
# get page no from home.html element with name= 'page'
page_number = request.GET.get('page')
# making page object
page = paginator.get_page(page_number)
# get all answer objects
all_ans = Answer.objects.all()
# get the username to display on home
username = request.user.username
# pass all the data to dictionary
data = {'all_ans': all_ans, 'all_qns': all_qns,
'page_object': page, 'username': username}
return render(request, 'home.html', data)
#authentication_required
def detail(request, questionID):
# get the Question from ID
RequestedQuestion = Question.objects.get(id=questionID)
# get the tags
Tags = getTags(RequestedQuestion)
# get the Answer
ans_A = Answer.objects.filter(related_question=RequestedQuestion)
# get the comment form
commentform = CommentForm()
# pass the info to data
data = {
'RequestedQuestion': RequestedQuestion,
'ans_A': ans_A,
'Tags': Tags,
'commentForm': commentform,
}
return render(request, 'detail.html', data)
#authentication_required
def writeAns(request, questionID):
# get the Question from ID
RequestedQuestion = Question.objects.get(id=questionID)
# check if there is a post request from template
if request.method == 'POST':
# get all the form data with post request into a variable
fom = Write_Answer_form(request.POST)
if fom.is_valid():
get_save_form_data(RequestedQuestion, request, fom)
# make a string url to pass as a arguments
url = '/detail/' + str(questionID)
return HttpResponseRedirect(url)
else:
return HttpResponse('you write the answer incorrectly')
else:
# send blank form to template
fom = Write_Answer_form()
data = {'form': fom}
return render(request, 'writeAns.html', data)
#authentication_required
def saveComment(request, ansID, questionID):
if request.method == 'POST':
fom = CommentForm(request.POST)
if fom.is_valid():
answer = Answer.objects.get(id=ansID)
commented_By = User.objects.get(pk=request.user.id)
detail = fom.cleaned_data['detail']
comment = Comment(
answer=answer, commented_By=commented_By, detail=detail)
comment.save()
# redirect the user to previous page
url = '/detail/' + str(questionID)
return HttpResponseRedirect(url)
# update the Answer
#authentication_required
def update(request, ansID):
if request.method == 'POST':
fom = Write_Answer_form(request.POST)
if fom.is_valid():
answer = Answer.objects.filter(id=ansID)
# getting data for saving
ansGiver = User.objects.get(pk=request.user.id)
related_question = answer[0].related_question
detail = '[Edited] ' + fom.cleaned_data['detail']
post_time = timezone.now()
# saving to database (for update we need to add all fields including answer id and post time)
ansObj = Answer(id=ansID, AnsGiver=ansGiver,
related_question=related_question, detail=detail, post_time=post_time)
ansObj.save()
# getting question id for redirecting the url
question = Question.objects.get(title=related_question)
url = '/detail/' + str(question.id)
return HttpResponseRedirect(url)
else:
fom = Write_Answer_form()
data = {'form': fom}
return render(request, 'update.html', data)
# delete the answer
#authentication_required
def deleteAns(request, ansID):
answerOb = Answer.objects.get(id=ansID)
question = Question.objects.get(title=answerOb.related_question)
answerOb.delete()
# url for redirection
url = '/detail/'+str(question.id)
return HttpResponseRedirect(url)
# search function
#authentication_required
def search(request):
usr_qry= request.GET['searchfieldText']
print(usr_qry)
# for use with postgre
# search_res1= Question.objects.filter(detail__icontains=usr_qry).order_by('id')
# search_res2= Question.objects.filter(title__icontains=usr_qry).order_by('id')
# final_res= search_res1.union(search_res2)
final_res= Question.objects.filter(Q(title__icontains=usr_qry) or Q(detail__icontains=usr_qry))
print('the search res are:',final_res)
pag_ob= Paginator(final_res,per_page=3)
print(f"Total no of question found with search are: {pag_ob.count}")
print(f"Total no of pages found with the question are: {pag_ob.num_pages}")
print(f"The Page range is: {pag_ob.page_range}")
print('the item in the page 1 are:',pag_ob.page(1).object_list)
return HttpResponse('chk terminal')
def downVote(request, ansID, quesID):
url= "/detail/"+str(quesID)
usr= User.objects.get(pk= request.user.id)
ansob= Answer.objects.get(id=ansID)
if chk_downvote_record(usr,ansob) == "yes":
print('this ans is already downvoted by: ',usr)
elif chk_downvote_record(usr,ansob) == "no":
save_to_downvote_record(usr,ansob)
update_downvote(ansob)
signals.delete_upVote.send(sender=None,ans=ansob,usr=usr)
return HttpResponseRedirect(url)
def upvote(request, ansID, quesID):
url = "/detail/"+str(quesID)
usr = User.objects.get(pk=request.user.id)
ans_ob = Answer.objects.get(id=ansID)
if check_upvote_record(usr, ans_ob) == "yes":
pass
elif check_upvote_record(usr, ans_ob) == "no":
save_to_upvt_rec(usr, ans_ob)
update_upvote(ans_ob)
signals.delete_downvote.send(sender=None,ans=ans_ob,usr=usr)
return HttpResponseRedirect(url)
Traceback
Environment:
Request Method: GET
Request URL: http://127.0.0.1:8000/search/?searchfieldText=window
Django Version: 3.2.2
Python Version: 3.9.5
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'App_wfi_Community',
'django.contrib.humanize',
'askQuestion',
'authentiCation']
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 (most recent call last):
File "C:\Users\saurav\Documents\GitHub\WFI-Community\venv\lib\site-packages\django\utils\datastructures.py", line 76, in __getitem__
list_ = super().__getitem__(key)
During handling of the above exception ('searchfieldText'), another exception occurred:
File "C:\Users\saurav\Documents\GitHub\WFI-Community\venv\lib\site-packages\django\core\handlers\exception.py", line 47, in inner
response = get_response(request)
File "C:\Users\saurav\Documents\GitHub\WFI-Community\venv\lib\site-packages\django\core\handlers\base.py", line 181, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\saurav\Documents\GitHub\WFI-Community\App_wfi_Community\decorators.py", line 7, in wrapper_func
return func_arg(request, *args, **kwargs)
File "C:\Users\saurav\Documents\GitHub\WFI-Community\App_wfi_Community\views.py", line 178, in search
usr_qry= request.POST['searchfieldText']
File "C:\Users\saurav\Documents\GitHub\WFI-Community\venv\lib\site-packages\django\utils\datastructures.py", line 78, in __getitem__
raise MultiValueDictKeyError(key)
Exception Type: MultiValueDictKeyError at /search/
Exception Value: 'searchfieldText'
i want to get user search query or whatever user is searching for.. initially i am trying to print user search query in Terminal but it gives me:
MultiValueDictKeyError at /search/
'searchfieldText'
if i use get method then it works fine but i want to use post method & i don't know what is going wrong here.

Answer 1

As I see in traceback, your browser sent GET request
Request Method: GET
Request URL: http://127.0.0.1:8000/search/?searchfieldText=window
Did you reload the page after changing template?