teleren/devto huggingface dataset:
Ajax Image Upload and Preview with Laravel 10
Published: 2023-09-07 06:56:53

Ajax Image Upload and Preview with Laravel 10 is a web development technique that allows users to upload images to a Laravel-based web application using Ajax (Asynchronous JavaScript and XML) for a smoother and more interactive user experience. This approach allows users to select an image file from their device, upload it to the server without refreshing the entire page, and then preview the uploaded image before finalizing the submission.


## Ajax Image Upload and Preview with Laravel 10

To upload an image with preview using Ajax in Laravel 10, you can follow these steps:

- Create a Laravel Project: First, you need to set up a Laravel project or use an existing one as the foundation for your web application.
- Configure File Upload: Configure Laravel to handle file uploads. You'll need to modify the config/filesystems.php file to define the disk where uploaded images will be stored, and configure any necessary permissions.
- Create Routes: Define routes in your Laravel application for handling the image upload and preview requests. Typically, you will have routes for showing the upload form, handling the upload, and displaying the preview.
- Create the Upload Form: Create an HTML form in your view file (Blade template) that allows users to select an image file for upload. You will also need to include JavaScript to capture the file selection and trigger the Ajax request.
- Implement Ajax Request: Write JavaScript code to capture the selected image, send an Ajax request to the server, and handle the server's response. You'll typically use JavaScript libraries like jQuery or Axios to simplify the Ajax communication.
- Handle Upload on the Server: Create a controller or route handler to receive the uploaded image, process it (e.g., validate, store, and resize), and return a response to the client with information about the uploaded image (e.g., file path or URL).
- Preview the Uploaded Image: In your view, use JavaScript to dynamically display the uploaded image to the user as a preview. This can be done by updating the HTML of a designated image container or creating a thumbnail.
- Validation and Error Handling: Implement validation and error handling on both the client and server sides to ensure that the image upload process is secure and user-friendly.
- Store the Image: Save the uploaded image to the configured storage disk on the server, such as the local file system or cloud storage like Amazon S3.
- Database Integration (Optional): If needed, you can store information about the uploaded images in your database, such as file names, paths, or metadata.
- Finalize Submission: After the user is satisfied with the image preview, allow them to submit the form or perform any other necessary actions in your application.

Read More [Ajax Image Upload and Preview with Laravel 10](https://www.tutsmake.com/laravel-10-ajax-image-upload-with-preview-tutorial/)
Minimize Bugs: Tips On How To Write Javascript In A Better Way
Tags: javascript, webdev, webmaster, tutorial
Published: 2023-09-07 06:52:18

Writing JavaScript in a meaningful way involves following best practices, writing clean and readable code, and structuring your code for maintainability and scalability. Here are some [tips for web developers](https://www.keralpatel.com) to help you write meaningful JavaScript code:


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/ljwqnz21q3aaasqapsnl.jpg)

**Use Descriptive Variable and Function Names:**

Choose meaningful names that accurately describe the purpose of variables, functions, and classes.
Avoid generic names like temp, data, or single-letter names.

`// Bad
let t = 10;
function f(x) { return x * 2; }

// Good
let temperature = 10;
function doubleValue(value) { return value * 2; }
`

**Follow a Consistent Coding Style:**

Stick to a style guide like Airbnb, Google, or StandardJS. Consistency improves readability and maintainability.
Use proper indentation and whitespace for clear code structure.

`// Bad
function foo(){
return true;
}

// Good
function foo() {
  return true;
}
`

**Avoid Global Variables:**

Minimize the use of global variables to prevent naming conflicts and improve code encapsulation.

`// Bad
let globalVar = 10;

function myFunction() {
  console.log(globalVar);
}

// Good
function myFunction() {
  let localVar = 10;
  console.log(localVar);
}
`

**Use Arrow Functions for Conciseness:**

Arrow functions provide a more concise syntax for simple functions.

`// Before
function add(a, b) {
  return a + b;
}

// After (Arrow Function)
const add = (a, b) => a + b;
`

**Avoid Using Magic Numbers and Strings:**

Use constants or enums to represent magic numbers and strings to improve code maintainability and readability.

`// Bad
if (status === 3) {
  // Do something
}

// Good
const STATUS_COMPLETED = 3;

if (status === STATUS_COMPLETED) {
  // Do something
}
`

**Modularize Your Code:**

Divide your code into modules or separate files to promote code reusability and maintainability.

`// Bad (all in one file)
// ...

// Good (modularized)
// module1.js
export function myFunction() {
  // ...
}

// module2.js
import { myFunction } from './module1.js';
`

**Handle Errors Gracefully:**

Use try-catch blocks to handle exceptions and errors in a controlled manner.

`try {
  // Code that may throw an error
} catch (error) {
  // Handle the error
}
`

**Last But Not The Least Is Comment Your Code:**

Write clear and concise comments to explain complex logic, algorithms, or any non-obvious code.

`// Calculate the factorial of a number
function factorial(n) {
  // ...
}
`

Following these best practices will help you write JavaScript code that is not only functional but also easier to work with in the long run.
Best AI Content Generator | AIdvantage Review, Pricing Plan
Published: 2023-09-07 06:26:09

Introducing... Are you exhausted from countless hours spent brainstorming and crafting content for your business? Your search ends here! AI-powered content generators are poised to revolutionize your content creation process. Among the leading contenders in the market stands AIdvantage.

A Comprehensive Look at AIdvantage - The **_[best AI Content Generator](https://buyinfoproduct.com/best-ai-content-generator/)_**
AI content generators, exemplified by AIdvantage, wield formidable capabilities, harnessing the might of artificial intelligence algorithms to produce top-tier, captivating content within mere minutes. These cutting-edge tools meticulously dissect extensive troves of data, encompassing articles, blog posts, and social media contributions, to craft content that is both distinctive and relevant, tailor-made to meet your precise requirements. With customizable features and user-friendly interfaces, AI content generators streamline the content creation process, enhancing speed and efficiency to new heights.
[Read More](https://buyinfoproduct.com/best-ai-content-generator/)
Laravel 10 Image Upload With Preview Tutorial
Published: 2023-09-07 06:20:33

I can provide you with a step-by-step tutorial on how to create an image upload feature with a preview in a Laravel application. I'll also include meta descriptions for each step to improve the SEO of your tutorial.


## Laravel 10 Image Upload And Display Preview Tutorial
Here are steps to image upload with preview in laravel 10:

### Step 1: Set up a Laravel Project

Create a new Laravel project with the laravel new command.
Configure your database settings in the .env file.

### Step 2: Create a Model and Migration

Generate a model and migration using php artisan make:model Image -m.
Define the image-related columns in the migration file.
Run the migration to create the database table.

### Step 3: Create the Image Upload Form

Create a new Blade view for the image upload form.
Design the form with HTML and include an input field for image uploads.

Configure the form to use the POST method and enctype="multipart/form-data".

### Step 4: Implement Image Validation

Create a validation rule for image uploads in the app/Http/Requests directory.

Apply the validation rule to the image input field in your form.

### Step 5: Handle Image Upload in Controller

Create a controller with php artisan make:controller ImageController.

Define a method in the controller to handle image uploads.
Use the store method to save uploaded images and store their paths in the database.

### Step 6: Display the Image Preview

Add JavaScript code to your Blade view to capture and display the uploaded image.
Use HTML and JavaScript to display a live preview of the uploaded image.

### Step 7: Store and Retrieve Images from Database

Modify the controller to save the image path in the database when uploading.
Create a route and controller method to retrieve and display uploaded images.

### Step 8: Create a Thumbnail for Uploaded Images (Optional)

Install a package like Intervention Image to create thumbnails.
Write code to generate thumbnails and display them alongside the full-size images.

### Step 9: Secure Your Image Uploads

Add additional validation to ensure uploaded files are genuine images.
Implement authorization checks to restrict access to uploaded images.
Handle potential errors and edge cases gracefully.

### Step 10: Test Your Image Upload Feature

Create test cases to cover image upload, validation, and display.
Run PHPUnit tests to verify the functionality.



Read More [Laravel 10 Image Upload With Preview Tutorial](https://www.tutsmake.com/laravel-10-image-upload-with-preview/)
Desperation in Interviews Will Never Land You a Job!
Tags: interviewskills, interviewtips, jobsearchtips
Published: 2023-09-07 06:14:25


Hey there, job seekers! We get it—interviews can be super nerve-wracking. But here’s the deal: desperation during an interview is a big no-no. Trust me; I’ve been on both sides of the table, and I’ve learned that recruiters and HR managers can spot desperation from a mile away. And guess what? They might use it against you during salary negotiations.

Read more [here - ww.FaithKilonzi.com](https://faithkilonzi.com/desperation-in-interviews-will-never-land-you-a-job/).
Laravel API Response Helpers
Published: 2023-09-07 05:59:21

A simple package allowing for consistent API responses throughout your Laravel application.
**Install the package:**
`composer require f9webltd/laravel-api-response-helpers`

```
<?php

namespace App\Http\Api\Controllers;

use F9Web\ApiResponseHelpers;
use Illuminate\Http\JsonResponse;

class OrdersController
{
    use ApiResponseHelpers;

    public function index(): JsonResponse
    {
        return $this->respondWithSuccess();
    }
}
```
**Other Methods that can be used**

```
respondNotFound(string|Exception $message, ?string $key = 'error')
```
Returns a 404 HTTP status code, an exception object can optionally be passed.

```
`respondWithSuccess(array|Arrayable|JsonSerializable|null $contents = null)`
```
Returns a 200 HTTP status code, optionally $contents to return as json can be passed. By default returns ['success' => true].

```
respondOk(string $message)
```
Returns a 200 HTTP status code

```
respondUnAuthenticated(?string $message = null)
```
Returns a 401 HTTP status code

```

respondForbidden(?string $message = null)
```
Returns a 403 HTTP status code

```
respondError(?string $message = null)
```
Returns a 400 HTTP status code

```
respondCreated(array|Arrayable|JsonSerializable|null $data = null)
```
Returns a 201 HTTP status code, with response optional data
Navigating Open-Source: A Beginner's Manual
Tags: beginners, productivity, opensource, programming
Published: 2023-09-07 05:56:14

The open source movement champions the idea that knowledge should be accessible to all, and fosters a culture of openness, transparency, and cooperation.

Contributing to open-source has many benefits not only for those taking part in it but also the community at large.

Now, if you are just a beginner trying to get into the open-source world, you should keep in mind that you are embarking on a journey that will not only improve your technical skills but also open many doors for you and give you multiple opportunities to interact with like-minded individuals.

This beginner friendly handbook is crafted to be your companion as you begin your journey into the world of open-source. It will cover concepts that will allow a beginner like you to make your mark in the open-source world.

We will start with the fundamentals of open source, and I'll guide you through setting up your development environment, navigating open-source communities, selecting the right projects, and making your first contribution.

By the end of this guide you will be equipped with the necessary skills to become an active member of the open-source community. This is the beginning of your open source journey where you will get to continuously learn, collaborate with others, and create an impact. To get started, **Read the full handbook here**: [Read Now](https://www.freecodecamp.org/news/how-to-contribute-to-open-source-handbook/).
crud operation using ajax in laravel 10 with popup modal
Tags: laravel, ajax, bootstrap, modal
Published: 2023-09-07 05:48:59

In this comprehensive Laravel 10 tutorial, you will master the art of creating a dynamic crud web application with the power of Ajax and Popup Modals. Laravel, a popular PHP framework, offers robust tools to simplify web development, and this tutorial takes it a step further by incorporating Ajax crud for seamless data manipulation and Popup Modals for a user-friendly interface.


## crud operation using ajax and laravel 10 with popup modal

CRUD operations (Create, Read, Update, Delete) using AJAX in Laravel without page refresh and with a popup modal involves a combination of Laravel 10, AJAX, and a front-end library like Bootstrap to create a user-friendly interface. Here, I'll provide you with a step-by-step guide to achieve this functionality:

- Install Laravel.
- Install Yajra Datatable.
- Configure the database.
- Create a migration table.
- Create a route.
- Add a controller and model.
- Add Blade files.
- Run the development server.

Read More [crud operation using ajax in laravel 10 without page refresh with popup modal](https://www.tutsmake.com/laravel-10-ajax-crud-using-datatable-tutorial/)
AntDB-Oracle Compatibility Developer’s Manual P3–34
Published: 2023-09-07 05:41:51

#### Comparison Operators

The following table shows the commonly used comparison operators.

| Operators| Description
|----------|----------
| \<| Less-than sign
| \>| Greater-than sign
| \<=| Less-than or equal-to sign
| \>=| Greater-than or equal-to sign
| \=| Equal-to sign
| \<>| Unequal-to sign
| !=| Unequal-to sign

For all data types actually used, we can use the comparison operators. All comparison operators are binary operators and are used to return values of Boolean type; expressions like 1\<2\<3 are not valid (because here the less-than operator cannot compare between the value 3 and a value of Boolean type).

In addition to the comparison operators, the BETWEEN operator can also be used, as follows.

a BETWEEN x AND y

is equivalent to

a >= x AND a \<= y

Likewise, 

a NOT BETWEEN x AND y

is equivalent to

a \< x OR a > y

There is no difference between these two forms of expressions except that the first form needs to be rewritten as the second one when CPU operations are performed.

To check whether a value is null, we can use an expression of the following form.

expression IS NULL

expression IS NOT NULL

Do not use expressions like expression = NULL. This is because NULL is not equal to a null value (a null value represents an indeterminate value, so you cannot determine whether two indeterminate values are equal). This behavior conforms to the SQL standard.

Some programs may expect the return value of expression = NULL to be true if the expression computes a null value. And here it is highly recommended to modify the program to comply with the SQL standard.
AntDB-Oracle Compatibility Developer’s Manual P3–33
Published: 2023-09-07 05:39:10

##### Use partitioned tables

**Description:** There is no difference between adding, deleting, and checking partitioned tables and ordinary tables. This section describes how to modify, query, and other operations on partitioned tables.

For example:

The following inserted 6 records into the partitioned table sales\_range, then deleted, modified and queried one record each, and finally queried the data in the sub-table sales\_may2010 of the partitioned table sales\_range.

```
-- Insert Record
insert into subpar_test4 values (8, to_date('2021-11-01','yyyy-mm-dd'), 'Oil', 0.3);
--update
update subpar_test4 set entype = 'Tidal' where id = 8;
select * from subpar_test4;
--delete
delete from subpar_test4 where id = 8;
-- Scan Single Partition
select * from subpar_test4 PARTITION(p2);
```

Usage restrictions

1. Each partition of the partition table is in the form of a table, so the partition names of different tables cannot be duplicated

2. Split and merge of partitions are not supported

3. Does not support sub-partitioning without table creation template

4. Move tablespace is not supported

### **Operators**

#### Logical operators

The logical operators we usually use are: AND, OR, NOT

SQL language uses 3 logical values of Boolean type, where the null value means "unknown", please see the truth table below.

AND/OR truth table

| a| B| a AND b| a OR b
|----------|----------|----------|----------
| true| true| true| true
| true| false| false| true
| true| NULL| NULL| true
| false| false| false| false
| false| NULL| false| NULL
| NULL| NULL| NULL| NULL

NOT truth table

| a| NOT a
|----------|----------
| true| false
| false| true
| NULL| NULL

The operators AND and OR are swappable, meaning that the operands to the left and right of the operator can be swapped without affecting the final result of the operation.
Laravel 10 Ajax CRUD with Image Upload Tutorial
Tags: laravel, crud, ajax, imageupload
Published: 2023-09-07 05:37:54

The Laravel 10 Ajax CRUD with Image Upload Tutorial is an in-depth, step-by-step guide designed to help developers master the art of creating a dynamic web application using the Laravel PHP framework, version 10. This comprehensive tutorial goes beyond basic CRUD (Create, Read, Update, Delete) operations and adds an exciting twist by incorporating Ajax techniques for seamless, asynchronous data manipulation.

## Laravel 10 Ajax CRUD with Image Upload Tutorial

Here are steps to create ajax crud with image upload in laravel 10 apps:

- Laravel 10 Fundamentals: The tutorial begins with a brief overview of Laravel 10's core concepts, ensuring that even beginners can follow along.
- Database Setup: Learn how to set up a database in Laravel, create migrations, and define models, providing a solid foundation for your application's data handling.
- CRUD Operations: Explore the fundamental operations - Create, Read, Update, and Delete - with Laravel's Eloquent ORM, making it easy to interact with your database.
- Ajax Integration: Dive into the world of Ajax to enable real-time data manipulation without page refreshes. Discover how to make asynchronous requests to your server, enhancing the user experience.
- Image Upload: Learn how to handle image uploads, store them in the server, and associate them with your CRUD operations. This feature is especially valuable for applications dealing with user profiles, products, or content management.
- Validation and Error Handling: Understand how to validate user input and handle errors gracefully to ensure data integrity and a smooth user experience.
- Security Measures: Discover essential security practices to protect your application against common vulnerabilities, such as Cross-Site Request Forgery (CSRF) and Cross-Site Scripting (XSS) attacks.
- Front-end Design: While the primary focus is on backend development, the tutorial provides guidance on integrating your Laravel application with a front-end framework of your choice, enhancing the overall aesthetics and user interface.


Read More [Laravel 10 Ajax CRUD Example with Image Upload Tutorial](https://www.tutsmake.com/laravel-10-ajax-crud-with-image-upload-tutorial)
Laravel 10 Yajra DataTables CRUD Example
Published: 2023-09-07 05:32:09

In Laravel, a "DataTables CRUD" typically refers to the implementation of Create, Read, Update, and Delete (CRUD) operations using the DataTables jQuery plugin for tabular data presentation and manipulation. DataTables is a popular JavaScript library that provides advanced features for sorting, searching, filtering, and paging through data displayed in HTML tables.

## Yajra DataTables laravel 10 crud example
Here's a breakdown to implementing a CRUD (Create, Read, Update, Delete) system with the help of DataTables within a Laravel application.

- 1. Set up Laravel: Create a new Laravel project or use an existing one. Ensure that your Laravel application is configured correctly with a database connection and routes.
- 2. Create Models: Define models to represent the data entities you want to manage. Each model corresponds to a database table and typically contains the business logic for data manipulation.
- 3. Create Controllers: Build controllers to handle CRUD operations. These controllers interact with the models to perform database operations like creating, reading, updating, and deleting records.
- 4. Create Views: Develop views that use DataTables to display and interact with your data. DataTables provides JavaScript functionality to enhance the table's user experience.
- 5. Define Routes: Define routes in Laravel's routes/web.php or routes/api.php file to map HTTP requests to your controller methods.
- 6. Implement CRUD Operations:
- Create: Handle the creation of new records through a form submission.
- Read: Retrieve and display records from the database using DataTables to format and enhance the table.
- Update: Enable editing and updating of existing records.
- Delete: Implement the deletion of records.
- 7. Use AJAX: To make DataTables work seamlessly with Laravel, you often use AJAX (Asynchronous JavaScript and XML) to fetch and send data between the front-end DataTables table and the back-end Laravel application. This allows for smooth and responsive user interactions.
- 8. Server-Side Processing: For handling large datasets efficiently, you may implement server-side processing with DataTables. In this approach, DataTables sends AJAX requests to the server for data retrieval, sorting, and pagination, and Laravel responds with the appropriate data.

Read More [Yajra DataTables laravel 10 crud example](https://www.tutsmake.com/laravel-10-datatable-crud-tutorial/)
AntDB-Oracle Compatibility Developer’s Manual P3–31
Published: 2023-09-07 05:31:31


##### Deleting a Partition

Use the ALTER TABLE...DROP PARTITION command to delete the partition definition and the data stored in the partition.

Summary:

ALTER TABLE table\_name DROP PARTITION partition\_name; -- delete primary partition

ALTER TABLE table\_name DROP SUBPARTITION partition\_name;-- delete subpartition

**argument:**

table\_name

The name of the partition table (optionally mode qualified).

partition\_name

The name of the partition that needs to be deleted.

**Example:**

```
create table subpar_test1(
    id int,
    productID int,
    procuctType varchar(50)
    ) 
    partition by list(productID)
    subpartition by list(procuctType)
       (partition p1 values (1,2,3,4,5)
           (subpartition subp11 values('Bus','Car','Trunk'),
            subpartition subp12 values('Bycle','Trolley'),
            subpartition subp13 values('Ship','Yacht','Boat')
           ),
        partition p2 values (6,7,8,9,10)
           (subpartition subp21 values('Bus','Car','Trunk'),
            subpartition subp22 values('Bycle','Trolley'),
            subpartition subp23 values('Ship','Yacht','Boat')
           ),
        partition p3 values (11,12,13,14,15)
           (subpartition subp31 values('Bus','Car','Trunk'),
            subpartition subp32 values('Bycle','Trolley'),
            subpartition subp33 values('Ship','Yacht','Boat')
           )
       );
--Delete the primary partition
 alter table subpar_test1 drop partition p1;
--Delete the child partition
alter table subpar_test1 drop subpartition subp34;
```