useMedia — Tracks State of a CSS Media Query

React sensor hook that tracks state of a CSS media query.

Usage

import {useMedia} from 'react-use';

const Demo = () => {
  const isWide = useMedia('(min-width: 480px)');

  return (
    <div>
      Screen is wide: {isWide ? 'Yes' : 'No'}
    </div>
  );
};

 

Reference

useMedia(query: string, defaultState: boolean = false): boolean;

The defaultState parameter is only used as a fallback for server side rendering.

When server side rendering, it is important to set this parameter because without it the server's initial state will fallback to false, but the client will initialize to the result of the media query. When React hydrates the server render, it may not match the client's state. See the React docs for more on why this is can lead to costly bugs 🐛.

Original article source at https://github.com

#react #hook #reacthook #javascript #programming #developer 

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How model queries work in Django

How model queries work in Django

Welcome to my blog, hey everyone in this article we are going to be working with queries in Django so for any web app that you build your going to want to write a query so you can retrieve information from your database so in this article I’ll be showing you all the different ways that you can write queries and it should cover about 90% of the cases that you’ll have when you’re writing your code the other 10% depend on your specific use case you may have to get more complicated but for the most part what I cover in this article should be able to help you so let’s start with the model that I have I’ve already created it.

**Read More : **How to make Chatbot in Python.

Read More : Django Admin Full Customization step by step

let’s just get into this diagram that I made so in here:

Describe each parameter in Django querset

we’re making a simple query for the myModel table so we want to pull out all the information in the database so we have this variable which is gonna hold a return value and we have our myModel models so this is simply the myModel model name so whatever you named your model just make sure you specify that and we’re gonna access the objects attribute once we get that object’s attribute we can simply use the all method and this will return all the information in the database so we’re gonna start with all and then we will go into getting single items filtering that data and go to our command prompt.

Here and we’ll actually start making our queries from here to do this let’s just go ahead and run** Python manage.py shell** and I am in my project file so make sure you’re in there when you start and what this does is it gives us an interactive shell to actually start working with our data so this is a lot like the Python shell but because we did manage.py it allows us to do things a Django way and actually query our database now open up the command prompt and let’s go ahead and start making our first queries.

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Learn CSS Media query CSS

Media Forms were implemented in CSS2.

The @media rule, which was implemented in CSS2, allowed different style rules to be specified for different media types.

For instance, one set of style rules could be used for computer screens, another for printers, another for portable devices, another for television-type devices, and so on.

Except for print media, these types of media have never received much support from smartphones.
Media Queries were introduced in CSS3 for the first time.

Instead of searching for a particular device type, media queries in CSS3 look at the device’s capabilities.

(Is your tablet or phone in landscape or portrait mode?)
a decision

Using media queries to deliver a personalized style sheet to desktops, laptops, tablets, and mobile phones is a common practice (such as iPhone and Android phones).

Checkout our channel for more cool tutorials & also subscribe
https://www.youtube.com/c/Tech2etc/videos

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Creating a CSS Visual Cheatsheet

The other day one of our students asked about possibility of having a CSS cheatsheet to help to decide on the best suited approach when doing this or that layout.

This evolved into the idea of making a visual CSS cheatsheet with all (most) of the common patterns we see everyday and one of the best possible conceptual implementation for them.

In the end any layout could and should be split into parts/blocks and we see every block separately.

Here is our first take on that and we would be happy to keep extending it to help us all.

Please, send you suggestions in the comments in community or via gitlab for the repeated CSS patterns with your favourite implementation for that so that we will all together make this as useful as it can be.

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CSS Alignment Made Simple

CSS is seen as an impediment in web development for many of us. Most of the time it looks like even when you follow the rules and everything seems clear, it still doesn’t work the way you want it to.

Therefore, the purpose of this article is to make some features of CSS much easier to understand.

The thing I want to address now is the alignment of the elements.

Without further ado, here are some of the most common scenarios one might encounter when it comes to this topic and how they can be approached.

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