teleren/devto huggingface dataset:
Function of Serializers in Django
Published: 2023-07-19 09:00:06

**Serializers.py**
from rest_framework import serializers
from .models import Country

class CountrySerializer(serializers.ModelSerializer):
    class Meta:
        model = Country
        fields = '__all__'


-----

This code defines a Django REST framework serializer for the `Country` model. 

Django REST framework provides serializers as a way to convert complex data types, such as Django models, to Python data types (usually dictionaries) that can be easily rendered into JSON or other content types. Serializers also provide deserialization, allowing parsed data to be converted back into complex types, allowing for easy data validation.

Let's break down the code:

1. `from rest_framework import serializers`: This line imports the `serializers` module from the Django REST framework, which contains various serializer classes.

2. `from .models import Country`: This line imports the `Country` model from the current package (assuming the serializers and models are in the same package).

3. `class CountrySerializer(serializers.ModelSerializer):`: This line defines a new serializer class named `CountrySerializer` that inherits from `serializers.ModelSerializer`.

4. `class Meta:`: Inside the serializer class, there is an inner `Meta` class. This class is used to provide metadata for the serializer.

5. `model = Country`: This line sets the `model` attribute of the serializer's `Meta` class to the `Country` model. This indicates that the serializer should be based on the `Country` model.

6. `fields = '__all__'`: This line sets the `fields` attribute of the serializer's `Meta` class to `__all__`. When set to `'__all__'`, it means that the serializer should include all the fields from the `Country` model in its serialized output. In other words, it will serialize all the model's fields.

By defining the `CountrySerializer` class this way, you can use it to serialize instances of the `Country` model into JSON or other formats, and it will include all the fields present in the `Country` model. Similarly, when deserializing data, it will validate and convert the data back into `Country` model instances. This makes it easy to work with API views and handle data exchange with clients in a standardized way.
Code Review Antipatterns
Tags: codereview, process, sarcasm, antitutorial
Published: 2023-07-19 08:56:46

Sarcastic advises for the vital process of software development. Because sometimes irony is the best teacher.
 
##Be personal
Do you remember John didn't buy you a drink last time you met for a social? So reviewing his PR is the right time to show him how wrong he was. Challenge every idea, every possible variable name, and every white space in the PR. He deserves this.
 
##Be excessive
That's right. Don't keep it. All thoughts, ideas, questions - put it all there. Just ask yourself, when was the last time you asked Anna how are her kids? Well, PR is the perfect place for it. What else can we add? Weather comments, photo of your pet, last update on your favourite football team. Let it be there.
 
**formatting is our enemy**
we can save a lot of time ignoring all of the commas bullet point highlighting structure bolding markdown they are there to waist our time serve no purpose at all
 
##Be unreasonable
"I just don't like it" is a perfectly valid reason for a PR rejection, because your word does matter.

![Michael office I don't like it](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/xebk6j7t9wlxwjh35pef.gif)
 
##Be toxic
Try to put your colleague in their place with sarcastic comments in PR, answer the question with the question or use as many rare technical definitions and abbreviations as possible. They will scare, doubt themself, and lose confidence. That's the best way of learning.

![Toxic comments](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/u67bbz534fojqb7yqqvm.png)

 
##Compare everyone with everyone
Don't forget to put a comment that Rachel did a similar task quicker, better and had no comments at her PR. You always have someone to compare to: Bill Gates, Mark Zuckerberg, Elon Mask, Linus Torvalds. You just need to find the right person for the situation.
 
##Discuss PR privately
We are all friends here, right? So use personal chat to ask Jimmy to fix this line 78 in Program.py. No comments in PR, no bureaucracy, no problem. Plus, from the outside, Jimmy's PR will look perfect. Like there were no issues at all. It is a win-win situation ;)
 
##Never resolve comments
If there are people that use comments in PR, teach them a lesson and never resolve them, so they can get lost in their comments and never finish PR.
 
##Hints instead of explicit examples
Use PR as game time and leave some breadcrumbs and hints instead of explicit examples of what you meant so the PR owner can guess the right idea. You are there to help.


P.S. Please add your antipatterns in the comments :)
Testing Essentials for the recent CBS versions
Published: 2023-07-19 08:53:00

Oracle has already announced the release note of v14.7, with several patchset releases in FLEXCUBE core banking solutions versions like 14.6, 14.5, 14.4 and more. Finacle CBS, on the other hand, has gone through a massive transformation from v10 to v11E. Infosys Finacle v11.E has many interesting features, including a product factory framework, multi-channel capabilities and more. Let’s take another instance: Temenos’ latest version R23 highlights several features in Core Banking, Digital Banking, Payment Hub, Risk and Compliance platform to increase agility and smart digital experience, accelerate growth and enhance customer engagement. The list of CBS versions goes on, and so do the challenges. Let’s have an in-depth overview of the current challenges and possible remedies to them.
Cedalio (YC S23): A decentralized alternative to Firebase or Supabase with a GraphQL
Tags: blockchain, web3, startup, developers
Published: 2023-07-19 08:35:45

Cedalio (YC S23) is a decentralized alternative to Firebase or Supabase with GraphQL.

Cedalio uses blockchain technology to help you create applications with information that is verifiable by default. Data used in your application can be traced back to its origin for verification, and more than that, you can give your users real ownership and portability of their data across different applications.

Cedalio offers a convenient GraphQL API for accessing, creating and managing a decentralized database.
For a more in-depth technical explanation of Cedalio’s architecture, read the following section: https://docs.cedalio.com/technology/solution-blueprint.

**Docs**: https://docs.cedalio.com/

---
If you like the article and would like to support me, make sure to:

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🚀 Help me in reaching to a wider audience by sharing my content with your friends and colleagues.
HelloWorld Smart contract
Tags: solidity, blockchain, ethereum, coding
Published: 2023-07-19 08:33:02

This is a smart contract written in the Solidity language,
The contract contains a public “**message**” variable of type String, initially defined as “Hello, World!” when the contract is deployed.

The contract also has a public “**setMessage**” function that updates the value of the “message” variable with a new string passed as an argument.

**memory** is a data type in Solidity used to temporarily store variables when executing functions. It saves storage space by automatically clearing the data once the function has finished.

```solidity
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract HelloWorld {
    string public message;

    constructor() {
        message = "Hello, World!";
    }

    function setMessage(string memory _newMessage) public {
        message = _newMessage;
    }
}
```

---
If you like the article and would like to support me, make sure to:

📑 View more content on my [dev.to](https://dev.to/sethlawson) Profile

🔔 Follow Me: [LinkedIn](https://linkedin.com/in/sethlawson)| [GitHub](https://github.com/SethLawson07) | [Twitter](https://twitter.com/0xSethLawson)

🚀 Help me in reaching to a wider audience by sharing my content with your friends and colleagues.
I'm locked out of my app for creating a shopping basket for my shop
Published: 2023-07-19 07:48:50

I'm locked out of my app for creating a shopping basket for my shop

Cannot resolve argument $cart of "App\Controller\CartController::add()": Cannot autowire service "App\Classe\Cart": argument "$session" of method "__construct()" needs an instance of "Symfony\Component\HttpFoundation\Session\SessionInterface" but this type has been excluded from autowiring.
Needing backend assistance
Published: 2023-07-19 07:33:33

I am working on an ecommerce web project and my add product page requires adding new products with description, price, etc. dynamically. My database is supposed to be in my AWS s3 bucket. I have my 'server.js' in NODE JS and other dependencies installed, but uploading and downloading images to and from my s3 bucket gives my a '403' forbidden error. I have written another script that successfully uploads and downloads from same s3 bucket, so i believe access to the s3 is intact. i need someone to help with my codes and point me in the right direction. thanks in advance.
🔹 My Journey to Discovering Dependency Injection 🔹
Tags: spring, solid, codemodularity, dependencyinjection
Published: 2023-07-19 07:23:38

Have you ever stumbled upon a concept that completely transformed the way you write code? Well, that's exactly what happened to me when I discovered Dependency Injection!



During my Django development journey, I had been dealing with dependencies without realizing that it was actually Dependency Injection. It wasn't until I started working on a Python project where I wanted to enhance code modularity that I stumbled upon this powerful concept.



I realized that in order to make my code more maintainable and testable, I needed to take control of instantiating dependent objects within a class. By manually creating these dependent objects myself, I could achieve greater control and flexibility in my codebase.



The moment I implemented this approach, I was thrilled to witness the transformation. My class became highly modular, allowing me to easily replace dependencies and mock interactions for testing purposes. The code became more maintainable, and I experienced numerous benefits that came with adhering to this approach.



As I delved deeper into my research, I discovered that this approach was known as "Dependency Injection," a fundamental concept in the SOLID principle. I was amazed to learn that there were even frameworks, like Spring in Java, that automated the object creation process, providing seamless dependency management.



This newfound knowledge left a lasting impression on me. The elegance and modularity of the Spring's approach captivated me, and I became even more passionate about creating clean, maintainable, and scalable code.



So, here I am, sharing my journey of discovering Dependency Injection—a game-changer in my development career. It has opened doors to new possibilities, empowering me to write code that is flexible, testable, and adaptable to changing requirements.



Have you had any "aha" moments in your coding journey? Share your experiences and let's celebrate the beauty of continuous learning and growth in the world of software development! 🚀💻
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/3lo97e35s4l1tnt2c1vl.jpg)
How to Get URL Parameters in Reactjs Application
Published: 2023-07-19 07:06:07

In ReactJS, you can retrieve the URL query string using various techniques. Below are commonly used methods:

 


### 1. Using the react-router-dom library

If you are using the react-router-dom library for routing in your React application, you can access the query string parameters using the useLocation hook and the search property.

``````import { useLocation } from 'react-router-dom';

function MyComponent() {
  const location = useLocation();
  const queryParams = new URLSearchParams(location.search);
  const value = queryParams.get('key'); // Retrieve the value of a specific query parameter

  // ...
}
 ``````


### 2. Using the window.location.search property:

If you are not using react-router-dom or if you simply want a basic approach, you can directly access the window.location.search property to obtain the query string.

``````function MyComponent() {
  const queryParams = new URLSearchParams(window.location.search);
  const value = queryParams.get('key'); // Retrieve the value of a specific query parameter

  // ...
}``````

This method directly accesses the window.location.search property, which contains the query string.

 


### 3. Using the query-string library:

Another option is to use the query-string library, which provides a simple way to parse and manipulate query strings.

``````import queryString from 'query-string';

function MyComponent() {
  const parsed = queryString.parse(window.location.search);
  const value = parsed.key; // Retrieve the value of a specific query parameter

  // ...
}
 ``````

This method requires installing the query-string library (npm install query-string).

These methods should help you retrieve the URL query string in a ReactJS application. Choose the one that best suits your project's needs and dependencies.

Thanks!

This article is originally posted over [jsonworld](jsonworld.com)
Precision in Coding: How Crucial is Attention to Detail?
Tags: codenewbie, beginners, discuss, career
Published: 2023-07-19 07:00:00

_This week, we're diving into the essential qualities that define exceptional coders. Share your practical tips, inspiring stories, and invaluable insights to help our newbies cultivate these qualities and unlock their full coding potential. Together, let's empower the next generation of coding superstars. Today's quality is:_ 

**Attention to Detail**

> How do you ensure that you pay close attention to detail while coding? Any specific techniques or practices?

> Can you share an example of a time when paying attention to detail helped you identify and rectify a coding error or improve the quality of your code?

Follow the [CodeNewbie Org](https://dev.to/codenewbieteam) and [#codenewbie](https://dev.to/t/codenewbie) for more discussions and online camaraderie!

*{% embed* https://dev.to/codenewbieteam *%}*
Help me for...
Tags: angular, jspdf, help
Published: 2023-07-19 06:57:25

Hello everyone I am stucked at a situation in my angular application where I am not able to use jsPDF library correctly. A detailed video is posted on my linkedin. I request you to please go through the video so you can understand the problem well.And help me out.

https://www.linkedin.com/posts/dinesh-dixit_hello-everyone-heres-an-update-on-the-resume-builder-activity-7086619215587086338-39hv?utm_source=share&utm_medium=member_desktop
When I was 20 I wrote these @6 points!
Published: 2023-07-19 06:48:08

20 Year Old having potential of researching especially around the areas relating to human behaviours. In school times had participated in various co curriculum activities/programs related to data gathering and presenting in the most explicit representative ways. 

Had a firm knowledge in various fields and found myself fit for this Online Short-Term Internship Programme. It's been said that no previous experience with any internship are getting exposed to this opportunity. So that's a plus point. 

#### Proper details:

My name is **Keshav R** and I hope these @6 points will best describe me:       
                 
1.  I  think  if you are not smart enough to move fast then there is hard work which will place you at the top.

2. Right now pursuing BTech in Computer Science at G.B Pant Govt. Engineering college, Delhi. Actively participated in 5 days Annual science internship programme, organized by govt. Of India i.e. Innovation in Science Pursuit for Inspired Research Programme at Deshbandhu college (D.U) in class 11th (2018)

3.  I like to play football and table tennis. Increasing knowledge and developing strength & endurance can also be considered as my hobby. I love nature(tress, rain, breeze etc).

4.  Won a piggy bank in 1st class in fancy dress competition :). Won first prize for getting highest score in 12th Board from RWA of my locality. Won 1100Rs.  and star trophy for my 12th grade in Garhwal Bhawan, Delhi. Also won 10,000Rs. for coming in 0.1% kvians who get above 95% in 12th board, 2019.

5. My affinity towards teaching developed with the motive of giving that kind of knowledge to small children which other understand in higher classes so that they can choose their career in early stages and expertise in that  field to enjoy O* massive success.

6. I am currently loving to write technical content/blogs to help other fellow learners to explain all those things for which I struggled to get grasp off!!.

Thanks for the read.
What is the use of HTML and CSS in web development?
Tags: webdev, css, html, javascript
Published: 2023-07-19 06:39:28

HyperText Markup Language (HTML) and Cascading Style Sheets (CSS) are two fundamental technologies used in web development. They serve distinct but complementary purposes:
**1. HTML (HyperText Markup Language):** HTML is the backbone of web pages and provides the structure and content of a webpage. It consists of a series of elements (tags) that are used to define the different parts of a web page, such as headings, paragraphs, images, links, tables, forms, and more. The primary uses of HTML in web development are:
**Content structuring:** HTML allows developers to organize the content of a webpage into logical sections, making it easier for search engines, screen readers, and other technologies to understand the page's structure.
**Semantic markup:** HTML5 introduces semantic elements like <header>, <nav>, <main>, <article>, <footer>, etc., which provide additional meaning to the content, making it more accessible and SEO-friendly.
**Hyperlinks:** HTML enables the creation of hyperlinks, allowing users to navigate between different pages on the web by clicking on links.
**Forms:** HTML includes form elements (e.g., <input>, <textarea>, <select>, etc.) to collect user data, such as login credentials, contact information, or survey responses.
**2.CSS (Cascading Style Sheets):** CSS is used to control the presentation and layout of web pages, separating the content from its appearance. It allows developers to define styles, colors, fonts, spacing, and positioning of HTML elements. The main uses of CSS in web development are:
**Styling:** CSS lets developers define how various HTML elements should look, making it possible to apply consistent styles across multiple pages of a website.
**Layout control:** CSS provides mechanisms to arrange elements in specific layouts, such as setting up responsive designs for different screen sizes and devices.
**Adaptability and responsiveness:** With CSS, developers can create responsive designs that adjust automatically to various screen sizes, making websites mobile-friendly and accessible on different devices.
**Maintenance and scalability:** By separating the content from its presentation, CSS allows developers to update the appearance of an entire website by modifying just a few CSS rules, making maintenance and scalability more manageable.
In summary, [HTML and CSS work](https://softwaredevelopmentinsights.com/what-you-need-about-web-development/) together to create visually appealing, well-structured, and accessible web pages, making them essential tools in modern web development.
Understand your architecture with AWS Network Resource Map
Tags: network, aws, beginners, cloud
Published: 2023-07-19 06:29:30

In today's increasingly complex cloud environments, having a clear understanding of your network infrastructure is crucial for efficient management and troubleshooting. AWS cloud offers a powerful tool called the Network Resource Map, which allows users to visualize and comprehend their network architecture within the AWS cloud. 

In this article, you'll learn how the Network Resource Map provides valuable insights into your network configuration and helps you optimize your AWS cloud infrastructure.

## Let's start with the basics, what is a Network Resource Map:
The Network Resource Map is a feature provided by AWS that offers a visual representation of your network infrastructure. 
It presents a graphical overview of your virtual private cloud (VPC), subnets, security groups, and network traffic flows within the AWS cloud. This map provides a high-level view of your network resources, their interconnections, and the flow of data, empowering you to comprehend the complexities of your network architecture.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/tl2f9wqdgvoz2k0e35fj.JPG)

## Where to find my resource map:
You can go to the VPC Dashboard, select the VPC and go to the Network Resource Map tab. This presents an interactive and dynamic map, where resources are represented as nodes, and the connections between them are displayed as lines. 

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/eicgfsivswz4a9xskl9a.JPG)


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/1l3z3tlc5exbou3yo2f9.JPG)

## Summary
AWS resource map will be especially useful at the beginning of your adventure in the cloud. Thanks to it, it will be easier for you to understand how the individual infrastructure elements are connected. It will be easier to understand the flow of traffic between subnets, NAT gateways, internet gateway and gateway endpoints.

You can also find a brief mention of Resource Map in my video in which I [solve the problem with overlapping IP addresses using a private NAT gateway](https://www.youtube.com/watch?v=fIcKD8jASyQ).
{% embed https://www.youtube.com/watch?v=fIcKD8jASyQ %}