Backend Development
PHP Tutorial
orm gets the attribute value in the association table, the attribute value in the orm table_PHP tutorial
orm gets the attribute value in the association table, the attribute value in the orm table_PHP tutorial
orm gets the attribute value in the association table, the attribute value in the orm table
ORM - Relational Object Model
The Eloquent ORM in laravel is used to interact with data tables. Each database table will interact with a corresponding "model". If you want to know more, please check the official documentation or Baidu. The code to obtain the attribute value in the association table is as follows:
/**
* [getContactAttribute 获取卖家联系人]
*/
public function getContactAttribute()
{
return $this->hasOne('App\Http\Models\Supplier', 'SupplierId', 'SupplierId')->first()->contact;
}
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1664
14
1423
52
1321
25
1269
29
1249
24
ORM framework Tortoise ORM in Python in practice
Jun 10, 2023 pm 06:05 PM
TortoiseORM is an asynchronous ORM framework developed based on the Python language and can be used to manage relational databases in Python asynchronous applications. This article will introduce how to use the TortoiseORM framework to create, read, update and delete data. You will also learn how to perform simple and complex queries from a relational database. Preparation Before starting this tutorial, you need to install Python (Python3.6+ is recommended) and install TortoiseOR.
How to use object-relational mapping (ORM) in PHP to simplify database operations?
May 07, 2024 am 08:39 AM
Database operations in PHP are simplified using ORM, which maps objects into relational databases. EloquentORM in Laravel allows you to interact with the database using object-oriented syntax. You can use ORM by defining model classes, using Eloquent methods, or building a blog system in practice.
ORM in PHP
May 24, 2023 am 08:14 AM
With the development of the Internet, the development of Web applications has gradually been widely used. One of the most important languages is PHP. However, data management and processing has always been a problem faced by developers. For this reason, ORM has become a good choice for data processing. What is an ORM? ORM stands for Object-Relational Mapping. It is a method of converting objects in object-oriented programming language programs by using metadata that describes the mapping between objects and databases.
How does Hibernate implement polymorphic mapping?
Apr 17, 2024 pm 12:09 PM
Hibernate polymorphic mapping can map inherited classes to the database and provides the following mapping types: joined-subclass: Create a separate table for the subclass, including all columns of the parent class. table-per-class: Create a separate table for subclasses, containing only subclass-specific columns. union-subclass: similar to joined-subclass, but the parent class table unions all subclass columns.
What is the ORM mechanism of Java Hibernate framework?
Apr 17, 2024 pm 02:39 PM
Hibernate is a JavaORM framework for mapping between Java objects and relational databases. Its ORM mechanism includes the following steps: Annotation/Configuration: The object class is marked with annotations or XML files, specifying its mapped database tables and columns. Session factory: manages the connection between Hibernate and the database. Session: Represents an active connection to the database and is used to perform query and update operations. Persistence: Save data to the database through the save() or update() method. Query: Use Criteria and HQL to define complex queries to retrieve data.
Object Relational Mapping (ORM) Basics: Understanding Doctrine ORM
Jun 19, 2023 pm 03:43 PM
Object Relational Mapping (ORM) Basics: Understanding DoctrineORM When we develop applications, we need to operate on the database to store and retrieve data. However, it is inconvenient to use the original database query code directly. We need to establish a mapping relationship between objects and data. This is the role of ORM. ORM automatically maps and converts objects and database tables, allowing easy data manipulation, making our code easier to maintain. DoctrineORM is PHP
How to use ORM (Object Relational Mapping) in Phalcon framework?
Jun 03, 2023 pm 09:21 PM
With the continuous development of web applications, corresponding web development frameworks are also emerging. Among them, the Phalcon framework is favored by more and more developers because of its high performance and flexibility. Phalcon framework provides many useful components, among which ORM (Object Relational Mapping) is considered one of the most important. This article will introduce how to use ORM in the Phalcon framework and some practical application examples. What is ORM First, we need to understand what ORM is. ORM is Object-Rel
What are the disadvantages of Hibernate ORM framework?
Apr 18, 2024 am 08:30 AM
The HibernateORM framework has the following shortcomings: 1. Large memory consumption because it caches query results and entity objects; 2. High complexity, requiring in-depth understanding of the architecture and configuration; 3. Delayed loading delays, leading to unexpected delays; 4. Performance bottlenecks, in May occur when a large number of entities are loaded or updated at the same time; 5. Vendor-specific implementation, resulting in differences between databases.
