Articles about General - Page 2 of 3

Build a REST API with Node.js SQLite and Express JS

In this guide you can build a REST API with Node.js SQLite and Express.js. Then, in a next part, we will be building automated Unit tests using Mocha and Chai, ready for a Test-Driven Development (TDD).

The main components of this REST service are:

A Node.js base project, created as a NPM module
An Express.js web server to manage the API endpoints, requests and responses
A SQLite database for application storage

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Deploy your Applications in Heroku

In this post we will learn how to deploy your web applications in Heroku, for free. Heroku is a Cloud Platform-as-a-Service (PAAS). This company provides the base platform server, network resources and endpoints to publish your applications. However, you need to provide the application code and the rest is created automatically for you.

Sometimes, we need to test or showcase a quick prototype of a cloud based web application, REST API backend , or a static web application client. Heroku is a good solution to quickly host application at no cost. For example, they support the most popular languages and frameworks like Node.js, Ruby, Python, Java, PHP, Go, Scala, Clojure.

The general steps to deploy your application are:

Register in the Heroku platform
Install the Heroku CLI
Login locally to Heroku
Create your application and store it in a Git repository
Configure your application for Heroku deployment.
Register your application in Heroku
Associate your git repository with your Heroku app
Push your application to the Heroku application master repository
Access your application from https://your-app.herokuapp.com

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Using Database models in Python and Django

After creating your Django web application, you can start using Database models in Python and Django. There are the main steps to get your models and application working with a Database.

Create new models for data processing
Adding your models to the admin interface
Playing with your models to create, edit, filter and delete information
Upgrading your models with new attributes and methods
Integrating data in your application.

In this guide, we continue from the previous post Web Applications using Python and Django.

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Implement Push Notifications in iOS with Swift

In this post we implement Push Notifications in iOS with Swift. Actually, this process is easier than before, with only a small set of steps:

Activate Push notifications in your iOS project
Request permissions for User notifications
Register in Apple Push Notifications service
Sending Test notifications
Handling Notifications in your app

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Web Applications using Python and Django

In this post we will Create Web Applications using Python and Django.

When it comes to web development back-ends, there are many alternatives, from PHP, Java and C# to GoLang and Ruby. Python also has many options to implement a powerful web application service. One of the most used web frameworks is Django.

Django provides a full featured web development framework, and automated tools for a straightforward development. In this post we create a full featured basic web applications using Python and Django, with the most common features for any web application:

Install Python and Django
Create the base Django Web application project
Create an application inside the Django project.
Create the main database and tables for administration
Run the web application locally

Then, in the next posts we will cover additional topics:

Create new models for data processing
Adding your models to the admin interface
Front-end web development with templates
Publish and deploy your application in Heroku

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Publish an iOS application in the AppStore

The next step after creating your application, is to publish an iOS application in the AppStore. This is a “quick” guide to publish iOS applications, if we want to make them public to the world. The process could be long for the first time.

The main steps involved in this process are:

Create an Apple ID
Join the Apple’s Developer program
Create and build your application in Xcode
Create an archive of your signed application
Register your application in App Store Connect
Upload or export your application
Submit your application for Review
Your application will be verified and published in the App Store.

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How to change the Laravel public folder path

In this post, we will show how to change the Laravel public folder path (the default path for publishing public content, including the index). Actually, there is no configuration value to change this, but you can change some special files to change it to another location, and your application will continue working as expected.

Note: For Laravel 8, you can check this new post: Create a Laravel 8 application from scratch

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Creating a Google API Key (Google Maps)

Every time you need a Google API key for different Google APIs. You need to create a new one for each different project. Follow these steps to get an API key.

Go to the Google Cloud Platform Dashboard.

Go to https://console.cloud.google.com/apis/dashboard to view your current applications registered in Google. If you have never created a project before, create a new project. For a new project, you need a Project Name (Example: MyApplication), and optionally, an organization. Google will give you a permanent application id associated to this project (Ex: myapplication-3563453).

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Install Cocoa Pods for XCode projects

In this post I will show how to Install Cocoa Pods for Xcode projects. Cocoa Pods is a dependency manager for Swift and Objective-C Cocoa projects.

Installation

When you install XCode, you also get the gem (RubyGems, the Ruby package manager). This command allows you to install Cocoa Pods for Xcode, without any extra configuration. Execute the following command

sudo gem install cocoapods

After fetching a list of dependency packages, you can use cocoa pods calling the command pod. However, each command must be executed in the root folder of your Xcode project:

pod init: To create an empty initial PodFile in your Xcode project folder.
pod install: To install packages defined in the PodFile

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Install Python and Web development tools

In this post you can learn how to install and configure Python and web development tools like Django, Tornado, Flask and Pyramid, to implement web applications.

Python is one of the most used programming languages. Above all, there are a lot of reasons to learn and use Python as a multi-purpose development tool:

Easy to Learn and Use: It is developer-oriented and high level.
Expressive: The syntax is more understandable and readable.
Interpreted: Easy to run and debug, suitable for beginners.
Cross-platform: Python is portable. You can install and run it in Windows, Linux, Unix and Mac. Also, there are several other ports.
Free and Open Source:The source-code is also available.
Object-Oriented: Python supports OOP with classes and objects.
Multi-paradigm: You can use procedural, object-oriented and functional programming paradigms.
Extensible: You can compile and integrate new libraries and tools using languages like C/C++.
Large Standard Library: Extensive functionality through a huge collection of modules and libraries through a package/module manager (pip) .
GUI Programming: You can implement Graphical user interfaces using Python, for desktop and web applications.
Integrated: You can easily integrate Python with languages like C, C++, JAVA etc.

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