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I would like to make a Pinterest Layout on my Feed?

0
I am triying to make my Feed Page for my Social Media Website look cool. Right now the Feed shows the Posts (Images and Videos) one below each other, like Instagram f. e. I want to have 2 Posts next to each other, like Pinterest f. e.
[what I want (click to see)] https://i.stack.imgur.com/KBGNg.png
I code my Webiste with HTML, CSS and PYTHON.
feed.html
<article class="content-section" style="overflow: auto;">
<div class="mediacontent">
{% if post.extension == '.mp4'%}
<video loop class="video-context" width="500px" height="500px" controls>
<source src="{{ post.file.url }}" type="video/mp4">
</video>
{% elif post.extension == '.jpg' or post.extension == '.jpeg' %}
<a href="{% url 'post-detail' post.id %}">
<img class="image-context" src="{{ post.file.url }}">
</a>
{% endif %}
</div>
<div class="initials">
<div class="media">
<div class="img-cont3">
<img class="rounded-circle article-img feed-pic" src="{{post.author.profile.image.url}}" alt="image">
</div>
<div class="media-body">
<span><a class="mr-2 full-name-link" href="{% url 'profile-detail-view' post.author.pk %}">{{ post.author.first_name }} {{ post.author.last_name }} </a></span>
<span><small class="text-muted at-username">w/{{ post.author }}</small></span>
</div>
</div>
</div>
<script>
var videos = document.querySelectorAll('video');
for(var i=0; i<videos.length; i++)
videos[i].addEventListener('play', function(){pauseAll(this)}, true);
function pauseAll(elem){
for(var i=0; i<videos.length; i++){
//Is this the one we want to play?
if(videos[i] == elem) continue;
//Have we already played it && is it already paused?
if(videos[i].played.length > 0 && !videos[i].paused){
// Then pause it now
videos[i].pause();
}
}
}
</script>
<br>
<h3 class="article-title">{{ post.title }}</h3>
<a href="{% url 'post-detail' post.id %}">
<p class="interactions">{{post.total_likes}} <span>Likes</span></p></a>
</article>
style.css
.media {
height: 55px;
}
.media-body span{
display: block;
margin-top: -3px;
}
body {
overflow-x: hidden;
}
.like-info {
font-size: 15px;
font-family: 'Inter', sans-serif;
color: #535353;
font-weight: 500;
}
.article-title span {
font-size: 14px;
font-family: 'Inter', sans-serif;
color: #000;
font-weight: 500;
}
.article-title span:hover {
text-decoration: none;
}
.article-title {
font-size: 14px;
font-family: 'Inter', sans-serif;
color: #535353;
font-weight: 400;
}
.interactions {
color: #000;
font-family: 'Inter', sans-serif;
font-size: 14px;
font-weight: 600;
}
.interactions span{
font-family: 'Inter', sans-serif, sans-serif;
color: #535353;
font-weight: 500;
}
.content-section {
background-color: #FAFAFA;
border: 1px #9d9d9d dashed;
border-radius: 10px;
}
.content-section-upload {
background-color: #FAFAFA;
border-radius: 10px;
border: none;
padding-right: -10px;
padding-left: -10px;
padding-bottom: -60px;
padding-top: -60px;
}
.create-section {
width: 100%;
}
.image-context {
display: grid;
width: 100%;
height: auto;
margin: auto;
border-radius: 20px;
text-align: center;
cursor: pointer;
}
.video-context {
display: grid;
width: 100%;
height: auto;
margin: auto;
background-color: #000;
border-radius: 20px;
text-align: center;
max-height: 450px;
cursor: pointer;
}
an more Styles that is not related to the main issue.
Is it possible to grid 2 Posts next to each other?

<!-- demo for pinterest like layout with responsiveness -->
**HTML:**
<div class="app">
<div class="feed">
<img src="" />
<!-- More images -->
</div>
</div>
**css:**
.app{
width: 80vw;
margin: auto;
}
.feed{
column: 4 12rem; /* 1st one is column count and second one is width */
}

Django Authentication method is not working

I am trying to use the default Django from django.contrib.auth authenticate() method to authenticate if the user exists. I am doing this right after the user registers. The user registers and their username, email, and password is inputted into the database then they are taken to the login page but it is not working.
Here is my views.py
from django.shortcuts import render,redirect
from .models import Student
from django.contrib.auth.models import User
from django.contrib.auth import authenticate, login
# Create your views here.
def index(request):
if request.method == "POST":
fname = request.POST.get('fname')
lname = request.POST.get('lname')
pnumber = request.POST.get('pnumber')
email = request.POST.get('email')
password = request.POST.get('password')
student = Student(fname = fname, lname = lname, pnumber = pnumber, email = email,
password = password)
student.save()
user = User.objects.create_user(fname, email, password)
user.save()
return render(request, ('SignUpPage.html'))
def loginUser(request):
if request.method == "POST":
email = request.POST.get('email')
password = request.POST.get('password')
user = authenticate(email=email, password=password)
if user is not None:
login(request, user)
return redirect('mainPage')
else:
return render(request, ('LoginPage.html'))
return render(request, ('LoginPage.html'))
def mainPage(request):
return render(request, ('MainPage.html'))
Here is my urls.py
from django.contrib import admin
from django.urls import path
from . import views
urlpatterns = [
path('', views.index, name='index'),
path('login', views.loginUser, name="login"),
path('mainPage',views.mainPage, name='mainPage')
]
Here is my html code
<!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>Login</title>
<link
href="https://fonts.googleapis.com/css2?family=Raleway:ital,wght#0,300;1,300&display=swap"
rel="stylesheet"
/>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
list-style: none;
font-family: "Raleway", sans-serif;
font-weight: bolder;
}
body {
background-image: url(clean-medical-background_53876-97927.webp);
background-repeat: no-repeat;
background-size: 1920px 975px;
}
.wrapper {
min-height: 90vh;
display: flex;
justify-content: right;
align-items: center;
margin-right: 500px;
}
.login_form {
background: white;
padding: 25px;
border-radius: 50px;
width: 400px;
}
.login_form .title {
text-align: center;
font-size: 30px;
text-transform: uppercase;
color: #77d5cc;
letter-spacing: 4px;
font-weight: 900;
}
.form_wrap {
margin-top: 35px;
}
.form_wrap .input_wrap {
margin-bottom: 20px;
}
.form_wrap .input_wrap:last-child {
margin-bottom: 10;
}
.form_wrap .input_wrap label {
display: block;
margin-bottom: 3px;
}
.form_wrap input[type="text"] {
width: 100%;
border-radius: 3px;
border: 1.3px solid #9597a6;
padding: 10px;
outline: none;
}
.form_wrap input[type="password"] {
width: 100%;
border-radius: 3px;
border: 1.3px solid #9597a6;
padding: 10px;
outline: none;
}
.form_wrap input[type="text"]:focus {
border-color: #77d5cc;
}
.form_wrap input[type="password"]:focus {
border-color: #77d5cc;
}
.form_wrap .login_btn {
text-align: center;
width: 100%;
background: #77d5cc;
padding: 10px;
border: 0;
color: white;
font-size: 17px;
border-radius: 3px;
text-transform: uppercase;
letter-spacing: 2px;
cursor: pointer;
}
.form_wrap .login_btn:hover {
background: #bde9e3;
}
.form_wrap p {
font-family: "Raleway", sans-serif;
text-align: center;
}
.form_wrap a {
display: block;
text-align: center;
width: 30%;
margin-left: 122px;
background: #77d5cc;
padding: 10px;
border: 0;
color: white;
font-size: 15px;
border-radius: 3px;
text-transform: uppercase;
letter-spacing: 2px;
cursor: pointer;
}
.form_wrap a:hover{
background-color: #bde9e3;
}
</style>
</head>
<body>
<div class="wrapper">
<div class="login_form">
<div class="title">
<label>Login</label>
</div>
<form action="/login" method="POST">
{% csrf_token %}
<div class="form_wrap">
<div class="input_wrap">
<label for="email">Email Address</label>
<input type="text" name = "email" id="email" />
</div>
<div class="input_wrap">
<label for="password">Password</label>
<input type="password" name = "password" id="password" />
</div>
<div class="input_wrap">
<input type="submit" value="Login" class="login_btn" />
</div>
<div class="input_wrap">
<p>Don't Have Account! Sign Up Here</p>
</div>
<div class="input_wrap">
Sign Up
</div>
</div>
</form>
</div>
</div>

You are trying to authenticate with email, basic Django's auth is with username. If you want to use email, you have to tell Django that. Add to your User model this:
class User(...):
...
USERNAME_FIELD = "email"
...
Also you said that User registers username but in view you uses only fname and lname. Please be specific and read what you write, otherwise we cannot help you.

text under symbols in the sidebar menu

Very new to CSS and HTML, but right now working on Django one-page project.
Under icons, I would like to place some text, but there is an issue with the borders.
Right now text wrapping works not very well, I would like to center text under the icon and have at least 3 or 4 straight strings.
Maybe there are issues that this text and icons should be in the container, IDK, will be very happy to hear any solution and suggestions for my portfolio project.
Thank you!
Here is my HTML:
body {
background: url(https://images.unsplash.com/photo-1534258936925-c58bed479fcb?ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=889&q=80) no-repeat center center fixed;
background-size: cover;
}
#background {
position: fixed;
top: 260px;
left: 0px;
width: 100%;
height: 50%;
background-color: white;
z-index: -1;
opacity: 0.8;
}
.social-menu ul {
position: absolute;
top: 25%;
left: 50%;
transform: translate(-50%, -50%);
padding: 0;
margin: 0;
display: flex;
}
.social-menu ul li {
list-style: none;
margin: 0 20px;
}
.social-menu ul li .fab {
color: #000000;
font-size: 60px;
line-height: 75px;
transition: .5s;
}
.social-menu ul li .fab:hover {
color: #ffffff;
}
.social-menu ul li a {
position: relative;
display: block;
width: 80px;
height: 80px;
border-radius: 50%;
background-color: white;
opacity: 0.8;
text-align: center;
transition: 0.5s;
transform: translate(0, 0px);
box-shadow: 0px 7px 5px rgba(0, 0, 0, 0.5);
}
.social-menu ul li a:hover {
transform: rotate(0deg) skew(0deg) translate(0, -10px);
}
.social-menu ul li:nth-child(1) a:hover {
background-color: #FF3371;
}
.social-menu ul li:nth-child(2) a:hover {
background-color: black;
}
.social-menu ul li:nth-child(3) a:hover {
background-color: blue;
}
.title {
color: black;
font-size: 25px;
padding-top: 220px;
margin-left: 445px;
}
.icons {
position: absolute;
top: 60%;
left: 50%;
transform: translate(-50%, -50%);
padding: 0;
margin: 0;
display: flex;
color: red;
}
.icons li {
list-style: none;
margin: 0 140px;
font-size: 50px;
}
.icons-text {
position: absolute;
top: 76%;
left: 52%;
transform: translate(-50%, -50%);
padding: 0;
margin: 0;
display: flex;
}
.icons-text li {
list-style: none;
margin: 0 100px;
font-size: 10px;
}
<!DOCTYPE html> {% load static %}
<html lang="ru">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title></title>
<link rel="stylesheet" href="{% static 'style.css' %}">
<script src="https://kit.fontawesome.com/5476287230.js" crossorigin="anonymous"></script>
</head>
<body>
<div class="social-menu">
<ul>
<li><i class="fab fa-instagram"></i></li>
<li><i class="fab fa-tiktok"></i></li>
<li><i class="fab fa-facebook"></i></li>
</ul>
</div>
<div class="title">
<h1>ЧТО ВЫ ПОЛУЧАЕТЕ?</h1>
</div>
<div id="background"></div>
<div class="icons">
<li><i class="fas fa-utensils"></i></li>
<li><i class="fas fa-dumbbell"></i></li>
<li><i class="fas fa-clock"></i></li>
<li><i class="fas fa-heartbeat"></i></li>
</div>
<div class="icons-text">
<li>
<h1>План питания с учетом Ваших вкусовых потребностей</h1>
</li>
<li>
<h1>Тренировки для любого уровня подготовки</h1>
</li>
<li>
<h1>Максимально быстрые результаты</h1>
</li>
<li>
<h1>Тело, о котором Вы могли только мечтать</h1>
</li>
</div>
</body>
</html>

redirection in html failed

I have a html:
{% load staticfiles %}
<div style="margin:0 auto; width:900px">
<ul id="nav">
<li id="notification_li">
<a href="#" id="notificationLink">
<div id="notify"> <img src="{% static "images/notification.png" %}" width="20" height="20" />
{% if unseen_notifications.count > 0 %}
<span id="notification_count">
{{unseen_notifications.count}}</span>
{% endif %}
</div></a>
<div id="notificationContainer">
<div id="notificationTitle">Inbox</div>
<div id="notificationsBody">
Home
</div>
<div id="notificationFooter">See All</div>
</div>
</li>
</ul>
</div>
Here I have "Home" inside id "notificationContainer". When I click Home it doesnt redirect but outside "notificationContainer" it redirects. Inside notification container I am willing to put notifications. But it doesnt redirect.
My style for this:
#notification_li{position:relative}
#notificationContainer {
background-color: #FFF;
border: 1px solid rgba(100, 100, 100, .4);
-webkit-box-shadow: 0 3px 8px rgba(0, 0, 0, .25);
overflow: visible;
position: absolute;
top: 30px;
margin-left: -170px;
width: 400px;
z-index: 11;
display: none;
}
#notificationContainer:before {
content: '';
display: block;
position: absolute;
width: 0;
height: 0;
border: 10px;
margin-top: -20px;
margin-left: 188px;
}
#notificationTitle {
z-index: 1000;
font-weight: bold;
padding: 8px;
font-size: 15px;
background-color: #ffffff;
width: 384px;
border-bottom: 1px solid #dddddd;
}
#notificationsBody {
padding: 0px 0px 0px 0px !important;
margin: 0px;
min-height:300px;
font-size:14px;
display: block;
}
#notificationsBody a{ color: #000;}
#notification_count {
padding: 3px 7px 3px 7px;
background: #cc0000;
color: #ffffff;
font-weight: bold;
margin-left: 0px;
border-radius: 20px;
position: absolute;
margin-top: -7px;
font-size: 11px;
}
#notificationFooter {
background-color: #e9eaed;
text-align: center;
font-weight: bold;
padding: 8px;
font-size: 12px;
border-top: 1px solid #dddddd;
}

You need to define a URL in your urls.py
and if you want to use it like this <a href="{% url "ask_question" %}"> then add a name to your url and use it like this <a href="{% url "home" %}">
if your home has a view then:
url(r'^people/', "myapp.views.people", name="people"),
if it is only a template you can use something like this:
url(r'^home/',TemplateView.as_view(template_name="homepage.html"), name="home"),

I think you misunderstood Ebtessam's answer. Not only do you need to configure the URL, you also need to reference that URL correctly in the HTML.
You have:
Home
Change to:
Home
The above assumes that within your URL you defined something that looks similar to:
url(r'^home/',views.your_home_view_here, name="home"),
Notice the name="home".In your template you reference the view with that name, hence:
{% url 'home' %}

How to call web service which is developed in Python's ladon framework from iOS app?

The web services are built on Python's Ladon framework.
Web Service URL is: http://ladonize.org/python-demos/Calculator
The code for calling web service is as below :
NSString *requestString = [NSString stringWithFormat:
#"http://ladonize.org/python-demos/Calculator"];
NSString *jsonString = [NSString stringWithFormat:#"{\"methodname\":\"add\",\"args\": {\"a\":\"123\",\"b\":\"123\"}}"];
NSData *jsonData = [NSData dataWithBytes: [jsonString UTF8String] length: [jsonString length]];
NSURL *url = [NSURL URLWithString:requestString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:#"POST"];
[request setHTTPBody: jsonData];
[request setValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:[NSString stringWithFormat:#"%d", [jsonData length]] forHTTPHeaderField:#"Content-Length"];
NSError *errorReturned = nil;
NSURLResponse *theResponse =[[NSURLResponse alloc]init];
NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&theResponse error:&errorReturned];
if (errorReturned) {
NSLog(#"Error %#",errorReturned.description);
}
else
{
NSError *jsonParsingError = nil;
NSMutableArray *arrDoctorInfo = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers|NSJSONReadingAllowFragments error:&jsonParsingError];
NSString* newStr = [NSString stringWithUTF8String:[data bytes]];
NSLog(#"Dict %#",newStr);
}
And I am getting following Response
<html>
<head>
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type" />
<title>Calculator</title>
<style>
body { margin: 0px; padding: 0px; font-family: verdana; font-size: 12pt; background-color: #FCFCFC; }
div.service-header {
height: 34px;
font-weight: bold; padding: 10px; font-size: 30px; color: white; border-bottom: 1px solid black; background: #70803C;
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#A0B06C', endColorstr='#70803C'); background: -webkit-gradient(linear, left top, left bottom, from(#A0B06C), to(#70803C)); background: -moz-linear-gradient(top, #A0B06C, #70803C);
text-shadow: #555555 2px 3px 3px;
}
div.service-header div.service-title {position: relative; float:left}
div.service-header .skin-selector {padding-top: 8px; margin-bottom: 0; position:relative; float: right; font-size: 12pt;}
div.service-overview {
float: right; margin: 20px; width: 200px;
-moz-border-radius: 7px 7px 7px 7px; -webkit-border-radius: 7px 7px 7px 7px; border-radius: 7px 7px 7px 7px; background-color: #F6F6F6; border: 1px solid #E6E6E6; border-collapse: separate; font-size: 11px; padding: 10px; margin-right: 20px;
-moz-box-shadow: 2px 2px 4px #555; -webkit-box-shadow: 2px 2px 4px #555; box-shadow: 2px 2px 4px #555;
}
div.service-overview div.headline { font-weight: bold; font-size: 18px; }
div.service-overview div.title { font-weight: bold; margin: 4px; font-size: 1.2em; }
div.service-overview ul.list { padding: 0px; margin: 0px; margin-left: 15px; list-style-type: none; }
div.service-overview ul.list li { font-size: 1.1em; }
div.service-description { padding: 15px; padding-bottom: 0px; }
div.service-description div.title { font-weight: bold; font-size: 1.2em; }
div.service-description p.doc-lines { font-size: 0.8em; }
div.service-description p.url { font-size: 0.8em; font-style: italic; }
div.service-description p.url span.url-title { font-weight: bold; }
div.service-interfaces { padding: 15px; padding-bottom: 0px; }
div.service-interfaces div.title { font-weight: bold; font-size: 1.2em; }
div.service-interfaces ul.list { font-size: 0.8em; }
div.service-interfaces ul.list li { padding: 4px; }
div.service-api { padding: 15px; padding-bottom: 0px; }
div.service-api div.methods div.title { font-weight: bold; font-size: 1.2em; }
div.service-api div.methods ul.list { font-size: 0.9em; list-style-type: none; }
div.service-api div.methods ul.list li.entry {
-moz-border-radius: 7px 7px 7px 7px; -webkit-border-radius: 7px 7px 7px 7px; border-radius: 7px 7px 7px 7px; background-color: #F6F6F6; border: 1px solid #E6E6E6;
border-collapse: separate; font-size: 0.8em; padding: 10px; margin-right: 20px;
-moz-box-shadow: 2px 2px 5px #555; -webkit-box-shadow: 2px 2px 5px #555; box-shadow: 2px 2px 5px #555;
margin-bottom: 16px;
}
div.service-api div.methods ul.list li.entry div.declaration {
font-size: 1.5em;
}
div.service-api div.methods ul.list li.entry div.declaration span.name { color: #881a1a; }
div.service-api div.methods ul.list li.entry span.param-type { color: #68387f; }
div.service-api div.methods ul.list li.entry span.param-name {}
div.service-api div.methods ul.list li.entry p.doc-lines { font-size: 1.2em; color: #276d11; }
div.service-api div.methods ul.list li.entry ul.params p.doc-lines { margin-top:0;margin-bottom:6px; font-size: 1.0em; color: #276d11; }
div.service-api div.types div.title { font-weight: bold; font-size: 1.2em; }
div.service-api div.types ul.list { font-size: 0.9em; list-style-type: none; }
div.service-api div.types ul.list li.entry {
-moz-border-radius: 7px 7px 7px 7px; -webkit-border-radius: 7px 7px 7px 7px; border-radius: 7px 7px 7px 7px; background-color: #F6F6F6; border: 1px solid #E6E6E6;
border-collapse: separate; font-size: 0.8em; padding: 10px; margin-right: 20px;
-moz-box-shadow: 2px 2px 5px #555; -webkit-box-shadow: 2px 2px 5px #555; box-shadow: 2px 2px 5px #555;
margin-bottom: 16px;
}
div.service-api div.types ul.list li.entry div.definition {
font-size: 1.5em;
}
div.service-api div.types ul.list li.entry div.definition span.name { color: #881a1a; }
div.service-api div.types ul.list li.entry span.param-type { color: #68387f; }
div.service-api div.types ul.list li.entry span.param-name {}
div.service-api div.types ul.list li.entry p.doc-lines { margin-top:0;margin-bottom:6px; font-size: 1.0em; color: #276d11; }
div.service-footer { font-size: 0.8em; text-align: center; font-style: italic; padding-top: 10px; padding-bottom: 10px; }
a:link { color: #00732F; text-decoration: none }
a:visited { color: #00732F; text-decoration: none }
a:hover { color: #00732F; text-decoration: underline }
</style>
</head>
<body>
<div class="service-header">
<div class="service-title">Calculator</div>
<form method="get" class="skin-selector">
<label for="skin-select">skins:</label>
<select id="skin-select" name="skin" onchange="document.forms[0].submit()">
<option value="">Default</option>
<option value="simple">Simple</option>
<option value="bluebox">Bluebox</option>
</select>
</form>
</div>
<div class="service-overview">
<div class="headline">Overview</div>
<div class="title">Methods</div>
<ul class="list">
<li>
<span class="entry">add</span>
( )
</li>
</ul>
<div class="title">Types</div>
<ul class="list">
</ul>
</div>
<div class="service-description">
<div class="title">Description</div>
<p class="doc-lines">
This service does the math, and serves as example for new potential Ladon users.
</p>
</div>
<div class="service-interfaces">
<div class="title">Interfaces</div>
<ul class="list">
<li>soap11 [ url description ]</li>
<li>jsonwsp [ url description ]</li>
<li>soap [ url description ]</li>
</ul>
</div>
<div class="service-api">
<div class="methods">
<div class="title">Methods</div>
<ul class="list">
<li class="entry">
<div class="declaration">
<a name="add"></a><span class="name">add</span>
(
<span class="param-type">
number
</span>
<span class="param-name">a</span>
,
<span class="param-type">
number
</span>
<span class="param-name">b</span>
)
</div>
<p class="doc-lines">
Add two integers together and return the result
</p>
<div class="params-title">Parameters</div>
<ul class="params">
<li>
<span class="param-name">a</span>: <span class="param-type">
number
</span>
<br/>
<p class="doc-lines">
1st integer
</p>
</li>
<li>
<span class="param-name">b</span>: <span class="param-type">
number
</span>
<br/>
<p class="doc-lines">
2nd integer
</p>
</li>
</ul>
<div class="return-type-title">Return value</div>
<div class="return-type">
<span class="param-type">
number
</span>
<p class="doc-lines">
The result of the addition
</p>
</div>
</li>
</ul>
</div>
<div class="types">
<div class="title">Types</div>
<ul class="list">
</ul>
</div>
</div>
<div class="service-footer">Powered by Ladon for Python</div>
</body>
</html>

It looks like the URL path you are using is wrong and should be changed to http://ladonize.org/python-demos/Calculator/jsonwsp.
A better way to create jsonData would be using dataUsingEncoding:.
You shouldn't be creating a response:
NSURLResponse *theResponse =[[NSURLResponse alloc]init];
Because it will be created and returned to you as part of the sendSynchronousRequest. What you should be doing is checking the contents of theResponse to verify the HTTP status code.

This is working solution...
NSString *requestString = [NSString stringWithFormat:
#"http://ladonize.org/python-demos/Calculator/jsonwsp"];
NSString *jsonString = [NSString stringWithFormat:#"{\"methodname\":\"add\",\"args\": {\"a\":123,\"b\":123}}"];
//: {"methodname": "add", "args": {"a":"123","b":"123"}}
NSLog(#"the request string is %#", requestString);
NSData *jsonData = [NSData dataWithBytes: [jsonString UTF8String] length: [jsonString length]];
NSURL *url = [NSURL URLWithString:requestString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:#"POST"];
[request setHTTPBody: jsonData];
[request setValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:[NSString stringWithFormat:#"%d", [jsonData length]] forHTTPHeaderField:#"Content-Length"];
NSError *errorReturned = nil;
NSURLResponse *theResponse =[[NSURLResponse alloc]init];
NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&theResponse error:&errorReturned];
if (errorReturned) {
NSLog(#"Error %#",errorReturned.description);
}
else
{
NSError *jsonParsingError = nil;
NSMutableArray *arrDoctorInfo = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers|NSJSONReadingAllowFragments error:&jsonParsingError];
NSString* newStr = [NSString stringWithUTF8String:[data bytes]];
NSLog(#"Dict %#",newStr);
}