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Hey there, it is my first blog about Django Web Framework and Docker. This quick-start guide demonstrates what Django Web Framework is, why we use Django rather than other frameworks, and how to dockerize the Django web app.
Git was developed by Linux creator Linus Torvalds for managing the Linux kernel source code. When I started working with git, I directly started implementing the Git commands without understanding …
Getting started with Django Web Framework and Docker
Hey there, it is my first blog about Django Web Framework and Docker. This quick-start guide demonstrates what Django Web Framework is, why we use Django rather than other frameworks, and how to dockerize the Django web app. It seems very interesting to deploy a web app through Django.
Figure 1-Django Docker
Django Web Framework:
Django is a high-level python web framework that enables the expeditious development of secure and maintainable websites. It is free and open-source, has a flourishing and agile community.
Django helps you to write software that is complete, versatile, secure, scalable, maintainable, and portable. Django runs on many platforms like Mac OS, Linux, and Windows. Many prominent sites use Django Framework including Disqus, Pinterest, Instagram, Mozilla, and open stack. Now the question arises whether Django is opinionated or not opinionated?
The proper way to handle a specific task is that opinionated frameworks should be used. In contrast, unopinionated frameworks have few diminutions on the perfect way to stick components together to accomplish an aim.
Django is “considerably opinionated”, hence delivers both facilities which are provided by opinionated and unopinionated frameworks individually.
It contributes a group of components to manipulate many web development tasks and one or two selected ways to use them.
Django code architecture:
The Django web app arranges the code that handles each of the following steps into different files:
Figure 2-Django code architecture
A web application waits for HTTP requests from a web browser or some other client in a conventional component-based website. After a request is received by the application, it detects the information based upon the URL and the POST and GET methods which are used to transfer data between client and server (HTTP). The database is accessed and other tasks take place depending on what type of information is required. The application then returns an HTTP response to the web browser.
URLs: It is much more rectifiable to take a separate view function for each resource when it is feasible to take requests from every individual URL via an individual function. A URL mapper is used to redirect HTTP requests to the suitable views centered on the request URL.
View: A view handles requests so it is known as the request handler function, which accepts HTTP requests and returns HTTP responses. View retrieves the data required to assure requests via Models.
Models: Models are the objects of python that determine the structure of the app’s data, and furnish apparatus to handle query records to the database.
What else can we get done using Django?
The foregoing sections display the primary features that you will utilize in almost every web application: URL, models, and views. Django includes a few of the other things also:
Forms: To collect data for processing on the server HTML forms are used. Form creation, validation, and processing are simplified by Django.
User permission and authentication: Dynamic user authentication and permission system are also included by Django.
Admin site: When you create an app using the basic framework the Django admin site is included by default, it makes it easy to provide an admin page for site admin to modify(create, edit and view) any data models in your site.
Serialization: Django makes it simple to serialize and serve your data in form of JSON or XML. When creating a web service or creating a website in which client-side code manages all rendering of data, this can be useful.
Django REST Framework:
REST (Representational state transfer) is a conventional architecture for building and communicating with web services. They use HTTP request methods to make it easier for the request-response cycle and typically transfer data using JSON format.
An API (Application Programming Interface), as the name suggests, is an interface that defines different interactions between different software components. Rest APIs are created using Django Rest Framework. It is a toolset that is assembled on top of the Django web framework, reducing the amount of code you need to write to create REST interfaces.
Django vs Flask vs Fast API:
Django, Flask, and Fast API are three major frameworks, which are used for developing web applications.
Packages: Among these three frameworks, Django has packages that enable the reusability of code. Django is a full-stack web development framework, in contrast to Flask and Fast API, which are minimally used frameworks to build a fast website.
Community: Because of Django’s wide use and popularity Django has an eminent community next to Flask, which also has a triumphant community. On the other side, fast API is relatively new so it has a small community.
Job openings: There are more job openings in the Python web community with Django requirements, next Flask, and Fast API, which has far fewer job openings. So if you have an objective for getting a job quickly, then Django should be best.
Hence, Django is a quick web development framework and if you want to get your application robust and built fast within a few days, there is no better framework than Django Web Framework. Django is also called the “Batteries Included Framework” because it provides all the features.
Introduction to Docker:
To materialize a Django project, frequently you require an off-the-rack solution in form of a library or dependency.
This is not an issue because is often registered in the requirements.txt file, which is a file that lists all the modules that are needed for the Django project to work.
The conflict starts when you attempt to share the entire project with another individual who wants to run and test it because, unfortunately, the user will have to perform the setup from scratch every time you make notable changes in the libraries and dependencies.
This is where containerization and docker fall in. Docker is an incredibly popular containerization platform that solves the library and dependency issue once and for all.
Conclusion:
In this portion, you have learned about Django Framework and I have wrapped it with a Docker introduction. If you enjoyed reading through this article, do let me know, and keep looking out for the next posts in this series of blogs. What we discussed today is just the tip of an iceberg and we will go through this topic thoroughly.
References:
https://www.codingforentrepreneurs.com/blog/django-on-docker
https://ozenero.com/django-crud-angular-11-postgresql
https://medium.com/swlh/build-your-first-rest-api-with-django-rest-framework-e394e39a482c
https://developer.mozilla.org/en-US/docs/Learn/Server-side/Django/Introduction
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TMedia Business Solution is USA, CANADA and INDIA Located Web Programming Development Company offers python development with latest UI/UX designs & smooth user experience.
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What Is Git Software?
Git was developed by Linux creator Linus Torvalds for managing the Linux kernel source code. When I started working with git, I directly started implementing the Git commands without understanding the meaning behind that. So, it had been an arduous task for me to use git. Since then, I have been studying git in a more comprehensive way. So, this article aims to provide an overview of git along with explaining the basics of it.
INTRODUCTION TO GIT:
Git is open source software for maintaining version controls and non-linear workflow effectively. It is used by programmers to manage the source code and maintain it collaboratively. It snapshots the directory trees of the file so data integrity is well maintained. It is very useful in handling small as well as large projects as it has a locally stored repository. Hence it fetches data from that local repository rather than fetching it from a remote server, making it faster than many other version control systems (VCS).
Git provides security by using the SHA (Secure Hash algorithm). It can be used in any operating environment as well as integrated systems. Hence, it provides flexibility as well. One of the most important features of git is that it is distributed. Hence, one need not export the project source code from one system to another. Git stores the source code in the local repository. Hence it can be accessed by multiple users at the same time and then the final changes can be pushed to the remote repository.
ARCHITECTURE OF GIT:
The working of git is surprisingly simple if understood correctly. In git, the commits made are saved as snapshots. Unlike others, git uses three-tier architecture. The workflow of git is as follows:
Figure 1 Git Repository Workflow
It consists of a local repository, remote repository, and staging index. The changes are made in the local repository. Then these changes are passed to staging index. Then it is committed to the remote repository. This architecture makes it easy to handle multiple changes at the same time.
BASIC TERMINOLOGIES OF GIT:
You can create, delete, rename and list the various branches.
CHECKOUT: - It lets you traverse between various branches. Checking out a branch updates the changes in the working directory.
CLONE: - It is used to create a copy of the existing directory.
FETCH: - It is used to access and download the contents from the remote repository.
HEAD: - The current or active branch is referred to as head. It is stored in the git repository, in .git/HEAD.
INDEX: - The staging area between the working directory and remote directory is known as the index.
MASTER: - When the file is downloaded from the remote server to the local repository then it has a local branch named as master. It is the repository’s default branch.
MERGE: - It is used to convert various commits into one unified history. It is used to preserve forked history.
PUSH: - It is used to upload the contents of the local repository to the remote repository.
PULL: - It is used to access the data from the remote repository and directly update the content of the local repos
Figure 2 Terminology Workflow
BASIC COMMANDS IN GIT:
GIT INIT: - It is used to create a new blank repository. It converts the existing project into the git project.
$git init
GIT STATUS: - The state of the working directory and the staging area can be displayed using the status command. $git status
GIT ADD: - The add command is used to add one or multiple files to the staging area. $git add <File name>
GIT COMMIT: - It is used to save the changes and generate a commit id for every change made. $git commit
GIT CLONE: - It is used to generate the copy of the remote repository using the remote URL. $git clone <repository URL>
GIT STASH: - It is used to navigate through various branches without committing the changes made in the working directory. $git stash
GIT SHOW HEAD: - It is used to check the location of the current working directory. $git show HEAD
GIT DIFF: - It is used to locate the changes that are not being staged yet. $git diff
GIT LOG: - It is used to display the status of the head and the most recent commits. $git log
GIT BRANCH: - It is used to display all the branches. $git branch
GIT CHECKOUT: - It is used to navigate through the branches. $git checkout <branchname>
GIT FETCH: - It is used to fetch the complete repository using the repository URL. $git fetch <repository URL>
GIT PULL: - It is used to access the data from a remote server to the working directory. $git pull <option> [<repository URL> <refspec>…]
GIT PUSH: - It is used to push the data from the local repository to the remote repository. $git push <option>[<Remote URL> <branch name> <refspec>...]
GIT REBASE: - It is used to rebase any commits made in the master branch or test branch. $git rebase <branch name>
GIT CHERRY-PICK: - If by mistake changes made are committed in the wrong branch then cherry-pick helps to commit changes from one branch to another branch. $git cherry-pick <commit id>
CONCLUSION: -
To sum up, the amount of flexibility makes git the best choice for programmers all over the world. With this, I end this article hoping that all the basics required are mentioned here. My next blog is going to be about services provided by git like GitHub and Gitlab.
Do you know what GitHub & GitLab is and what’s the difference between them?
REFERENCES: -
https://www.javatpoint.com/git
https://git-scm.com/about
https://en.wikipedia.org/wiki/Git
https://developer.ibm.com/tutorials/d-learn-workings-git/
https://www.atlassian.com/git
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