Tutorial by Examples: 04

404 responses are returned when a resource is not found on the server, in Symfony this status can be created by throwing a NotFoundHttpException exception. To avoid an extra use statement inside a controller use the createNotFoundException() provided by the Controller class <?php namespace Bu...

using System.Net; ... string serverResponse; try { // Call a method that performs an HTTP request (per the above examples). serverResponse = PerformHttpRequest(); } catch (WebException ex) { if (ex.Status == WebExceptionStatus.ProtocolError) { HttpWebResponse...

Rescue from record not found error instead of showing an exception or white page: class ApplicationController < ActionController::Base # ... your other stuff here rescue_from ActiveRecord::RecordNotFound do |exception| redirect_to root_path, 404, alert: 'Record not found' en...

Prerequisites In order to run Elasticsearch, a Java Runtime Environment (JRE) is required on the machine. Elasticsearch requires Java 7 or higher and recommends Oracle JDK version 1.8.0_73. Install Oracle Java 8 sudo add-apt-repository -y ppa:webupd8team/java sudo apt-get update echo "or...

HTTP 404 Not Found means that the server couldn't find the path using the URI that the client requested. HTTP/1.1 404 Not Found Most often, the requested file was deleted, but sometimes it can be a document root misconfiguration or a lack of permissions (though missing permissions more frequentl...

The 80486 Paging Subsystem was very similar to the 80386 one. It was backward compatible, and the only new features were to allow for memory cache control on a Page-by-Page basis - the OS designers could mark specific pages as not to be cached, or to use different write-through or write-back caching...

If you want to automatically throw an exception when searching for a record that isn't found on a modal, you can use either Vehicle::findOrFail(1); or Vehicle::where('make', 'ford')->firstOrFail(); If a record with the primary key of 1 is not found, a ModelNotFoundException is thrown. W...

This tutorial will guide you through the process from scratch. Please note some preliminary notes about this particular setup, useful in case that you already have some requested package: Is needed a version of php >=5.0 (I had troubles with php 7.0) Is requested any version of perl Is need...

See discussions in "GRANT" and "Recovering root password".

You can use the following instructions to install Theano and configure the GPU (assume a freshly installed Ubuntu 14.04): # Install Theano sudo apt-get install python-numpy python-scipy python-dev python-pip python-nose g++ libopenblas-dev git sudo pip install Theano # Install Nvidia drivers, ...

NOTES: We are going to install Magento 2 on fresh Ubuntu Server 16.04 LTS with PHP 7.0, MySQL 5.6 and Apache 2.4. 1. Setup Requirements Apache 2.2 or 2.4 with mod_rewrite module (or) Nginx >= 1.8. PHP 5.5 or later version. PHP 7.0 also supported. Required PHP-Modules – PDO/MySQL, mbstring, ...

This function will display the 404 error message supplied to it using the following error template: Path - application/errors/error_404.php The function expects the string passed to it to be the file path to the page that isn't found. Note that CodeIgniter automatically shows 404 messages if cont...

After spending more than 5 hours, i found this easy solution: -To verify that the system has a CUDA-capable GPU, run the following command: lspci | grep -i NVIDIA You will see output similar to the following example (showing an NVIDIA Tesla K80/M60 card): -Disabling the nouveau driver: sudo...

Step 1 – Install LAMP To start with Laravel, we first need to set up a running LAMP server. If you have already running LAMP stack skip this step else use followings commands to set up lamp on Ubuntu system. Install PHP 5.6 $ sudo apt-get install python-software-properties $ sudo add-apt-reposit...

You must have 3.2 to be able to upgrade to 3.4. This example assumes you are using apt. sudo service mongod stop sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 0C49F3730359A14518585931BC711F9BA15703C6 echo "deb [ arch=amd64,arm64 ] http://repo.mongodb.org/apt/ubuntu xeni...

This will take about 30 minutes. We will be setting Ruby on Rails Development Environment on Ubuntu 16.10 Yakkety Yak. You'll want to download the latest Desktop version here: http://releases.ubuntu.com/17.04/ Open up your terminal using Ctrl + Alt + T. Installing Ruby The First step is to ins...

Run the following bash script as sudo #!/bin/bash # get deps apt -y install build-essential libncurses5-dev libxml2-dev libsqlite3-dev libssl-dev libsrtp0-dev uuid-dev libjansson-dev # download cd /usr/src wget http://downloads.asterisk.org/pub/telephony/asterisk/asterisk-14-current.tar.gz...

Sometimes you want to return a 404 (Not Found) response, because the requested resource does not exist. Symfony allows you to do so by throwing a NotFoundHttpException. The Symfony base Controller exposes a createNotFoundException method which creates the exception for you: public function indexAc...