Categories
Javascript Learning Tech

Function getStaticPaths, How to create paths in getStaticProps function If you have no access to create paths in getStaticPaths, NEXTJS

Hello,

Hope this is very interesting question of scenario you might be facing to solve with next js and

  • when you don’t want to use “function getServerSideProps” to pass dynamic (data as) props to the page components
  • when you don’t want too make a extra API calls to generate the paths for products or whatever list of thing you are creating in “function getStaticPaths”

Here is the quick things we need to work out to work this out of box for specially the scenario were are showing product detail view page which is of route like in Nextjs as “page/product/[id].js“

First in function getStaticPaths() we just need to do this and pass fallback as “true” as we our dynamic path is not pre-rendered!

export async function getStaticPaths() {
    // Empty array since paths will be dynamically created in getStaticProps
    return {
        paths: [],
        fallback: true, // Set to true if there are dynamic paths that are not pre-rendered !! 
    };
};

Next, we need to edit our “getStaticProps” function and then voila;


export async function getStaticProps({ params }) {
    const product = await getProduct(params && params.id);
    if (!product) {
        return {
            redirect: {
                destination: '/',
                permanent: false,
            },
        }
    }

    return {
        props: {
            product,
            error: resp.error ? true : false
        }
    };
}

Boom you are done, and just use those props in your page component like



return (<PhotoProvider
        key={'photoprovider-key-' + product?.id}
        speed={() => 600}
        easing={(type) => (type === 2 ? '' : 'cubic-bezier(.25, 1, .30, 1)')}>

/*...other codes*/
</PhotoProvider>

you will find you page up and working, fine!

Hope this simple steps helps to solve our complex situations arises in the development work of software building on planet earth!

I would also like to the above situation, why we can’t just do the same thing simply with getServerSideProps in single function, I am facing the issue to build using next build && next export for android package, as dynamics cannot be rendered as html files due to getServerSideProps sitting in between, and also as per the Next JS docs we can’t do anything what I have found of my learnings.

Happy Learning! Thanks for reading.

Keep coding & Develop Wonderful.

To Follow help out to know: uidevwork

Categories
Javascript Learning Tech

What is forwardRef and how its helps in react?

Hello, lets quickly take a review on React forwardRef, what it in actual,

In React, the forwardRef function is a utility that allows you to pass a ref through a component to one of its children. It’s commonly used when you need to access the underlying DOM node or React component instance of a child component from the parent component.

When you create a component using functional components in React, you can use the useRef hook to create a ref object. This ref object can then be passed as a prop to child components. However, when you pass the ref as a prop to a child component, React does not automatically pass it down to the underlying DOM element or custom component. This is where forwardRef comes into play.

By using forwardRef, you can create a component that accepts a ref and forwards it to one of its children. Here’s an example:

const ChildComp = React.forwardRef((props, ref) => {
  // Use the ref object to access the underlying DOM node or component instance
  return <input ref={ref} />;
});

const ParentComp = () => {
  const inputRef = React.useRef(null);

  const handleClick = () => {
    // Access the input element using the ref
    if (inputRef.current) {
      inputRef.current.focus();
    }
  };

  return (
    <div>
      <ChildComponent ref={inputRef} />
      <button onClick={handleClick}>Focus Input</button>
    </div>
  );
};

In the example above, the ChildComponent uses forwardRef to forward the ref prop to the <input> element. In the ParentComponent, a ref is created using the useRef hook and passed to ChildComponent using the ref prop. This allows the ParentComponent to access the input element and call the focus method when the button is clicked.

By using forwardRef, helps to bridge the gap between functional components and the imperative DOM or component operations that sometimes require direct access to child component element.

Note here we are accessing child’s component dom node not child component here as ref object, i.e can be consider as subtle difference to understand for our mind.

Hope this helps to clear out the basic concept behind using forwardRef in React.

Happy Learning!

Categories
Javascript Learning Tech

How to fix nextjs appending http://localhost:3000/_next/image? to the image srcset how to remove for production build for images?

Hello,

Welcome to the question and for the search, facing this issue? lets quickly see how we can fix this, with and in next.config.js file.

In Next.js, when using the next/image component, the src attribute is automatically transformed to a URL that goes through the Next.js image optimization pipeline. During development, this URL may include http://localhost:3000/_next/image? to indicate the local development server.

However, for production images, you can configure Next.js to remove the http://localhost:3000/_next/image? prefix. Here’s how you can achieve that:

Create a custom loader for Next.js images:

  • Open next.config.js and add the following code:
    • module.exports = {
    • images: {
      • loader: 'imgix',
      • path: '', // Remove the path prefix for production images
    • }, };
  • This configuration sets the loader option to use the imgix loader, which removes the http://localhost:3000/_next/image? prefix. The path option is set to an empty string, this will leave the prefix for image urls and left blank

Now you can easily build your project and test to images are loading fine with absolute url path if applied so.

Hope this help to solve the issue.

Happy Learning!

Categories
Learning Learning Tech

How to sync generated next.js out folder build to android/android studio in capacitor?

Hello, Welcome to the feel and question.

Here is a quick way do it out!

Build the Next.js project: Run the build command for your Next.js project, which typically generates a production-ready build in the “out”/ “build” folder. 

npx next build && npx next export

Locate the build output: Once the build process is finished, locate the generated “out” folder in your Next.js project directory.

Copy the build output: Copy the entire contents of the “out” folder, including any subfolders and files.

Paste the build output in the Android project: Navigate to the root directory of your Android project in Capacitor. The default location is usually the “android” folder within your Capacitor project.

Paste the build output: Paste the contents of the “out” folder into the appropriate location in your Android project. By default, you can paste it into the “app/src/main/assets/public” directory of your Android project.

Sync the Android project: After pasting the build output, trigger a sync operation in Android Studio to ensure the changes are recognized. This can be done by clicking on the “Sync Project with Gradle Files” button or by selecting “File” -> “Sync Project with Gradle Files” in the Android Studio menu.

Build and run the Android project: Once the sync operation is complete, you can build and run your Android project to deploy the updated Next.js web application within your Capacitor app.

Voila you are done!.

Hope this question and learning helps.

Happy Learning!

Categories
Learning

Webpack cache issue: start value has mixed support, consider using flex-start instead

Hello,
If you facing issue like below:

//NextJS Compilation Error on Server Start:

(11716:3) autoprefixer: start value has mixed support, consider using flex-start instead
<w> [webpack.cache.PackFileCacheStrategy] Skipped not serializable cache item 'Compilation/modules|F:\WORK\maw\code\node_modules\next\dist\build\webpack\loaders\css-loader\src\index.js??ruleSet[1].rules[2].oneOf[9].use[1]!F:\WORK\maw\code\node_modules\next\dist\build\webpack\loaders\postcss-loader\src\index.js??ruleSet[1].rules[2].oneOf[9].use[2]!F:\WORK\maw\code\node_modules\next\dist\build\webpack\loaders\resolve-url-loader\index.js??ruleSet[1].rules[2].oneOf[9].use[3]!F:\WORK\maw\code\node_modules\next\dist\compiled\sass-loader\cjs.js??ruleSet[1].rules[2].oneOf[9].use[4]!F:\WORK\maw\code\styles\main.scss': No serializer registered for Warning
<w> while serializing webpack/lib/cache/PackFileCacheStrategy.PackContentItems -> webpack/lib/NormalModule -> Array { 1 items } -> webpack/lib/ModuleWarning -> Warning

The reason to this is you are using wrong value, somewhere in your scss or css file, in my case i have set align-items to ‘start‘ which is incorrect so compilation through’s error when running nextjs server. 

align-items start value issue

Fix, is simple correct it with the right value, so I have updated with ‘flex-start’ fixed the compilation issue and server is up and running. 

Hope this quick help would save your time!

Happy Learning.

Categories
Learning Learning Tech

Laravel getting error: Target class [App\Http\Controllers\GurbaniReadingController::class] does not exist. But file already exists!!

Hello Guys,

Facing this issue and struggling to find the cause?, okay then lets direct jump in to the fix I found or more precisely mistake I found!

In picture you might seeing controller name is different than I have mentioned below; I am changed it to Book, so don’t get confuse.

In my case I was wrapped the loading on controller in web.php route with single quotes!

Line of code causing this error:

Route::get('/book-readings/upload-photos', ['App\Http\Controllers\BookReadingController::class', 'uploadPhotos']);

Very carefully watch in above code code was wrapped in quotes: ‘App\Http\Controllers\BookReadingController::class’,
Controller should be loaded without single quotes;

And second important reason is it, this line should shall fall before the resource route if you have similar to this controller, in my case it was : 

Route::resource('/book-readings', App\Http\Controllers\BookReadingController::class); 
// this line was defined before the above route I wanted to work! (I am not sure why this line causing to stop showing the page :/)

Finally I make these changes so everything started working smoothly & all routes loading fine and up!.

// Upload Audio Files:
Route::get('/book-readings/upload-photos', [App\Http\Controllers\BookReadingController::class, 'showPhotos'])->name('book-readings.upload-photos');
Route::post('/book-readings/upload-photos', [App\Http\Controllers\BookReadingController::class, 'uploadPhotos']);
Route::delete('/book-readings/upload-photos/{id}', [App\Http\Controllers\BookReadingController::class, 'destroyPhoto']);

Route::resource('/book-readings', App\Http\Controllers\BookReadingController::class);

Hope this will give you a hint to point the issue you might come up like this mostly when we are new and learning and developing new things!

Happy Learnings

Categories
Blog Learning

Curios Question: Wanted to know how much rate would cost me running 10W Laser Machine for 14 mins?

Hello

Welcome here, If you also wondering how much it would cost us for running certain electrical appliance at home for our small work or business and you wondering how to make those calculations to find the rate for that mins or hours of machine running assuming just its running in your home nothing else.

If you were looking for similar answer, lets dive how I have tried to find it out myself with help of latest tech programs online!

Lets Dig In!

Here how I frame my question using the data from my latest Electricity Bill (In India, I am using Tata Power the great source of electricity provider to the nation!)

Based on following data 101-300 Units Energy Charge: 5.65 rupee /kwh, RA charges 0.00 rupee /kwh, CSS charges: 0.35 rupee /kwh, Wheeling Charges : 2.21 rupee /kwh, Fixed Demand Charges: 125.00 rupees, ED 16.00%, Tose: 0.2604 rupee /kwh
If I am running a single machine of 10W laser for 14 mins how much my electricity bill would be?

Question I formed to put in the mouth of AI tool 😛

Here is how AI calculated from the above that and calculate out the result for me:

To calculate the electricity bill, we need to convert the power consumption of the machine from Watts to kilowatts and then multiply it by the energy rate per unit.


10 W = 10/1000 kW = 0.01 kW

The time period is 14 minutes, which we need to convert to hours:

14 minutes = 14/60 hours = 0.2333 hours

The total energy consumption can be calculated as:

Energy consumed = Power x Time = 0.01 kW x 0.2333 hours = 0.002333 kWh

Now, we can calculate the energy charges, demand charges, and other charges as follows:

Energy Charges = Energy consumed x Energy rate per unit
= 0.002333 kWh x 5.65 Rs/kWh = 0.0132 Rs

Fixed Demand Charges = Fixed Demand Charges per billing cycle
= 125.00 Rs (for a single machine)

Wheeling Charges = Energy consumed x Wheeling charges per unit
= 0.002333 kWh x 2.21 Rs/kWh = 0.0051 Rs

CSS Charges = Energy consumed x CSS charges per unit
= 0.002333 kWh x 0.35 Rs/kWh = 0.0008 Rs

ED Charges = Energy charges + Wheeling charges + CSS charges
= 0.0132 Rs + 0.0051 Rs + 0.0008 Rs = 0.0191 Rs

Taxes and Other Surcharges = Energy charges + Wheeling charges + CSS charges + ED charges x Tose rate
= 0.0191 Rs x 0.2604 = 0.00498 Rs

Total Electricity Bill = Energy Charges + Fixed Demand Charges + Wheeling Charges + CSS Charges + ED Charges + Taxes and Other Surcharges
= 0.0132 Rs + 125.00 Rs + 0.0051 Rs + 0.0008 Rs + 0.0191 Rs + 0.00498 Rs
= 125.043 Rs (rounded off to two decimal places)

Therefore, if you run a single 10W laser machine for 14 minutes, your electricity bill would be approximately 125.043 Rs.

Then I said Wow so nice and quick, isn’t it?

But then thought & put my attention on the Fixed Demand Charges which 125/-, would it be a for day? then I thought No its for a month, so how it would calculate for a day? it simply as you would also know this to divide in my number of days in a month, right?

So to see if AI response the result back with more in detail with assuming and consuming similar data passed before, here is reframed question I have put (in the mouth of AI tool)

can you do this divide fixed charges by month of days and return everything again?

question for AI tool

This is what it finally answered back;

Sure, to calculate the fixed demand charges per day, we can divide the monthly fixed demand charges by the number of days in the month.

Assuming a 30-day billing cycle, the fixed demand charges per day would be:

Fixed Demand Charges per day = Fixed Demand Charges per month / Number of days in the month
= 125.00 Rs / 30 days
= 4.1667 Rs per day

Now, we can calculate the updated energy charges, wheeling charges, CSS charges, ED charges, and taxes and other surcharges per unit of energy consumed, which would be:

Energy Charges = 5.65 Rs /kWh
Wheeling Charges = 2.21 Rs /kWh
CSS Charges = 0.35 Rs /kWh
ED Charges = Energy charges + Wheeling charges + CSS charges
= 5.65 Rs/kWh + 2.21 Rs/kWh + 0.35 Rs/kWh
= 8.21 Rs/kWh

Taxes and Other Surcharges = ED charges x Tose rate
= 8.21 Rs/kWh x 0.2604
= 2.1384 Rs/kWh

To calculate the total electricity bill for running a 10W laser machine for 14 minutes per day, we can use the same method as before, but now we have updated values for the fixed demand charges, ED charges, and taxes and other surcharges.

Energy consumed per day = Energy consumed per hour x Hours per day
= 0.01 kW x 0.2333 hours/day
= 0.002333 kWh/day

Energy Charges per day = Energy consumed per day x Energy rate per unit
= 0.002333 kWh/day x 5.65 Rs/kWh
= 0.0132 Rs/day

Fixed Demand Charges per day = Fixed Demand Charges per month / Number of days in the month
= 125.00 Rs / 30 days
= 4.1667 Rs/day

Wheeling Charges per day = Energy consumed per day x Wheeling charges per unit
= 0.002333 kWh/day x 2.21 Rs/kWh
= 0.0051 Rs/day

CSS Charges per day = Energy consumed per day x CSS charges per unit
= 0.002333 kWh/day x 0.35 Rs/kWh
= 0.0008 Rs/day

ED Charges per day = Energy charges per day + Wheeling charges per day + CSS charges per day
= 0.0132 Rs/day + 0.0051 Rs/day + 0.0008 Rs/day
= 0.0191 Rs/day

Taxes and Other Surcharges per day = ED charges per day x Tose rate
= 0.0191 Rs/day x 0.2604
= 0.00498 Rs/day

Total Electricity Bill per day = Energy Charges per day + Fixed Demand Charges per day + Wheeling Charges per day + CSS Charges per day + ED Charges per day + Taxes and Other Surcharges per day
= 0.0132 Rs/day + 4.1667 Rs/day + 0.0051 Rs/day + 0.0008 Rs/day + 0.0191 Rs/day + 0.00498 Rs/day
= 4.2098 Rs/day

Therefore, if you run a single 10W laser machine for 14 minutes per day, your electricity bill would be approximately 4.2098 Rs/day

Hurray! Isn’t it fun?

Hope you enjoyed this puzzle solving question answer game when really you want to know the difficult question you have all time in our head, but latest techs help’s out in secs with such quick answers!

Keep exploring keep learning!

Source : Open AI Chat GPT

P.S. Not sure what it calculated it reflect exact what we are looking, I assuming it calculated to be accurate!

Categories
Javascript Learning

How to fix Uncaught TypeError: Cannot assign to read only property ‘0’ of object occurring in JavaScript?

Hello,

This type error mostly get in scenario when you try to sort the readyonly data array.

For me this was occoured when I tried to sort the direct result from my GraphQL query response data like below:

const sortedData = data.bhangarwalas.sort((a, b) => a?.firstname > b?.firstname ? 1 : -1);

In above, data.bhangarwalas is graphql query response results which is readonly in nature as response.

To fix this issue the solution is quick fix for which I have too google to know the result!

Error Screenshot Uncaught TypeError: Cannot assign to read only property ‘0’ of object ‘[object Array]’

Here is the quick solution:

const sortedData = [...data.bhangarwalas];
      sortedData.sort((a, b) => a?.firstname > b?.firstname ? 1 : -1);

In code above, We need to clone or you in other words, copying the “data.bhangarwalas” into new array variable and then over that variable, we need to perform sorting operation, which results us right response.

Hope this help you to solve the quick error or to know what scenario this type of error is generated.

Thanks for reading.

Happy learning!

Categories
Learning

What to do when you don’t quickly find UTS scan code at a Mumbai Railway Station you are at?

Hello,

You are facing too? Not to worry.

The challenge of finding UTS Mumbai Station Scan QR scan code if you are standing at other the end of the station where UTS scan code is not available quickly.

Just quickly jump over to this site : MUMBAI RAILWAY STATION UTS SCAN CODE find the station and scan the code right away and Book your ticket from UTS App.

UTS Scan code Mumbai [Western|Centeral|Eastern]

Incase if you not find the UTS Scan code you can quickly drop a note to them at  utsqrscan@doableyo.com to add your favorite station QR code on the list!

Hope this helps.

Thanks for visiting. Please share with your friends and family if you love their work!

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Javascript Learning Tech

What to do when you get nextjs error (Module not found: Error: Can’t resolve ‘private-next-pages/’ in ‘/vercel/path0’) on vercel/nextjs deployment?

Hello,

If you too facing this error : Module not found: Error: Can’t resolve ‘private-next-pages/’ in ‘/vercel/path0’

while deploying your NextJs project over Vercel platform, please follow what solution and mistake I was doing.

Error Screenshot of error occurring from the NextJs Project deployment on vercel platform.

As, I tried to debug this error by right away check the the next in the log highlighted (in screenshot above) recommending to following alias rule to be set if you have touched you next.config.js file with any webpack settings.

In my case I did have to touched the next.config.js file and so I have add the same lines of code recommend in the follow link of Next.js doc

https://nextjs.org/docs/messages/invalid-resolve-alias

But for me still I didn’t found the right solution, because was in the naming of folder under nextjs project.

Basically, I was loading the static content into the dynamic route in Nextjs (Like example reference here).

What I have missed was the name of the folder under pages directory I have created named as “learn” it should be similar to name “posts” as created one at root level of the project to hold the “.md” or “.html” file content to pass down to dynamic route page which will be under /pages/posts/[id].js

Sharing here screenshot of the directory where the naming was a mistake

Here highlighted “learn” folder should be same as “posts” below

After renaming the folder name “learn” to “posts” the error went off and found my deployment working successfully.

Hope this small mistake tip help you to solve this problem.

If you have found any mistake in the post. Please don’t hesitate to hit me on my email jat@doableyo.com to rectify.

Enjoyed reading this? How about sharing with your friends or in groups, this would help!

Thanks, Happy Learning!