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Technical Articles

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Laravel

What to do if there is an error when adding fields in laravel

Laravel is a popular web development framework that makes it easy to build efficient and secure applications. However, even using Laravel, we may still encounter some problems. One of them is an error while adding a field. In this article, we will discuss what may cause this error and how to fix it. 1. Possible reasons 1. Syntax error When adding a new field, we need to execute a SQL statement in the database. This error occurs if there are syntax errors in the SQL statement. In Laravel we can

Apr 23, 2023 am 10:06 AM

What's wrong with laravel's new addition and the inability to edit it?

Recently, when developing a project using the Laravel framework, I discovered a problem: the newly added data cannot be edited. After further troubleshooting and analysis, I found the problem and solved it. Let me share some solution ideas below. First, we need to clarify a concept - HTTP request method. HTTP request method refers to the method used by the client when requesting resources from the server, including GET, POST, PUT, DELETE, etc. Among them, the GET method is used to obtain resources, and the POST method is used to create resources.

Apr 23, 2023 am 10:06 AM

What to do if there is an access error in laravel5.2

Laravel5.2 is a popular PHP framework, but users may encounter access errors while using this framework. This article will introduce some possible causes of Laravel5.2 access errors and provide corresponding solutions. 1. Error prompts First of all, if error prompts appear when accessing Laravel5.2, we need to check these prompts to better understand the source of the problem. For example, if a web page returns a 500 error, we need to check the server error log to find out the cause of the specific problem. 2. Insufficient authority

Apr 23, 2023 am 10:06 AM

How to find sum in laravel? three methods

Preface Laravel is a popular PHP development framework that provides many convenient and flexible features when developing web applications. In this article, we will explore several methods of summing in Laravel. Method 1: Use Query Builder Laravel's Query Builder is a powerful database query tool that provides many convenient methods, including aggregate functions. We can use Laravel’s Query Build

Apr 23, 2023 am 09:18 AM

laravel modify default storage

In Laravel application development, file upload is a very common operation. Laravel provides a very convenient way to manage these uploaded files, which is the file system. The file system is actually Laravel's default storage method, and it stores uploaded files to a specified location on disk. However, in some cases, we may need to store uploaded files in other locations, such as cloud storage, CDN or other remote storage services. At this time, we need to modify Laravel’s default

Apr 23, 2023 am 09:18 AM

laravel multiple file upload process

Laravel is a popular PHP framework that provides convenient file upload functionality, allowing users to upload multiple files. This article will introduce the process of multi-file upload in Laravel. 1. Configure routing In Laravel, file uploads usually submit forms through POST requests. Uploaded files will be sent to the server at the specified path, such as `/upload`. In order for Laravel to handle uploaded files, we need to define a route in the `routes/web.php` file as follows: ```

Apr 23, 2023 am 09:18 AM

Laravel checks the first few records

Laravel is a popular PHP framework with powerful database query capabilities. Sometimes we need to get the first few records in the database. Several methods will be introduced below to achieve this requirement. Method 1: Use the limit method. Laravel integrates the SQL limit method, which can easily obtain the first few records. For example, if we want to get the first 5 records in the products table, we can use the following code: ```$products = DB::table('products')->limi

Apr 23, 2023 am 09:18 AM

Detailed explanation of Laravel source code

Laravel is an excellent PHP web framework that is widely used in many development projects. The outstanding performance of the Laravel framework lies not only in its flexibility, ease of use, and security, but also in its complete source code. Not only that, the openness of Laravel source code also provides developers with reference and learning opportunities. In this article, we will introduce how to use Laravel's source code. ## 1. Download Laravel source code. To use Laravel source code, you first need to download its build source.

Apr 23, 2023 am 09:18 AM

Discuss some commonly used coordination tools and libraries in Laravel

Laravel is an open source PHP web application framework that uses many modern programming ideas and technologies to make it easier and faster to build efficient, stable and secure web applications. However, for most developers, using Laravel is just an initial step, and a successfully completed project requires a variety of auxiliary tools and libraries to work with. This article will discuss some commonly used tools and libraries of Laravel to help readers better build Laravel applications. 1.Compose

Apr 23, 2023 am 09:18 AM

How to delete images in directory in laravel

Laravel is a popular PHP framework that provides many useful features to make developers more efficient and convenient during the development process. In many application development, we need to process images, which involves image uploading and deletion. This article will introduce how to delete images in a specified directory in the Laravel framework. 1. Laravel's file storage method In the Laravel framework, we can store and operate files through the storage engine. Laravel comes with a variety of storage engines, including

Apr 23, 2023 am 09:18 AM

Framework comparison: Which one is more powerful, laravel or tp?

With the development of Internet technology and the continuous expansion of application scenarios, various web development frameworks are also emerging. Among them, Laravel and ThinkPHP (TP), as two mainstream frameworks widely used at home and abroad, have attracted much attention and discussion among developers. So, which one is more powerful, Laravel or TP? This article will compare framework design philosophy, development efficiency, scalability and other aspects. 1. Framework design philosophy 1. LaravelLaravel is a framework based on MVC (Model-View-Contro

Apr 23, 2023 am 09:18 AM

How to cache static pages in laravel

Laravel is one of the most widely used frameworks by PHP developers, with powerful features and flexible configuration. When we build a Laravel based application, sometimes we need to cache some static pages to improve the performance of the website. In this article, we will demonstrate how to use Laravel's caching feature to cache static pages, thus improving the performance and response time of your application. We will try to accomplish this task in two steps: first, we will configure Laravel's cache driver, and then we will create a

Apr 23, 2023 am 09:18 AM

Explore Laravel's error handling and error reporting modes

Laravel is a popular PHP framework with good scalability and maintainability. However, as the scale of the project expands, various problems and errors will inevitably occur, which requires an in-depth understanding of Laravel's error handling and error reporting modes. Laravel provides a variety of error reporting modes, including development mode (debug mode), production mode (production mode) and maintenance mode (maintenance mode). Each mode has its unique functions and uses.

Apr 23, 2023 am 09:18 AM

How to exclude unwanted fields in Laravel model query

Laravel is a very popular PHP web development framework that provides powerful and flexible database operation functions. When using Laravel to query data, we often need to filter and return certain specified fields, but in some cases, we need to exclude certain fields so that they do not appear in the query results. This article explains how to exclude unwanted fields in Laravel model queries. First, we can use the `select()` method provided by Laravel to specify the query fields, for example

Apr 23, 2023 am 09:18 AM