eloquent ruby

1. Intro Before entering this section formally, let's take a look at what ORM is. ORM, the Object-relational Mapping (Object relational mapping), is a mapping between relational databases and business entity objects, so that we don't have to deal with complex SQL statements when we're working with specific business objects. Simply manipulate the properties and methods of the object. One of the most common implementations of ORM is that ActiveRecord and Datamapper,activerecord are particularly

See the 2016 version of the Laravel series Getting Started tutorial (a) Here is a passage: Eloquent is the Laravel ORM, the most powerful place in the Laravel system, not one of them. The original Laravel author in the development of the first version of the time spent a full one-third to get out eloquent. Of course, "to practice this work, must first self-palace",

: This article mainly introduces Laravel5 basics (7)-Eloquent (laravel's ORM). If you are interested in PHP tutorials, refer to it. Let's generate the first model. Php artisan make: model Article # output Model created successfully. Created Migration: 2015_03_28_062517_create_articles_table View the generated fileapp/Article.php Nothing special, except for inheriting from the Model, but with powerful functions, these are encapsulated in the lar

Eloquent:serialization Introduction Basic Usage Hiding Attributes from JSON Appending Values to JSON IntroductionWhen the building JSON APIs, you'll often need to convert your models and relationships to arrays or JSON. Eloquent includes convenient methods for making these conversions, as well as controlling which attributes is included in Your serializations. Basic Usage converting A Model to an ArrayTo-Convert a model and

PHP laravel Framework Multi-table relational processing eloquent one-to-many relationship processing This post mainly introduces the processing of eloquent to one-to-many relationships in the Laravel framework, in Laravel Administrator (background expansion pack) Your database may be related to each other. For example, a blog post may have many comments, or an order is related to the person who placed the

Laravel 5 Framework Learning eloquent (Laravel orm), laraveleloquent Let's build the first model. Copy the Code code as follows:PHP Artisan Make:model Article#输出Model created successfully.Created migration:2015_03_28_062517_create_articles_table Look at the resulting file app/article.php Nothing special, except that it inherits from the model, but has powerful functions, which are encapsulated in the model of Laravel. The model automatically has pow

The get in eloquent is actually a get in eloquent/builder, the result is a collection object, and then collection's first is called to get an item in the collection, that is, a model object.Query/builder in the get is the array, is actually directly performed the PDO fetchall results, this result can not call first, but it is possible to directly on the Query/builder to raise the first, A Stdclass object wi

What is eloquent?Eloquent is an ORM, all known as an Object relational Mapping, translated as a "relational mapping" (if it is only treated as the database Abstraction Layer Array Library abstraction level, it is too underestimated). The so-called "object" is the "model" in this paper, and the object relation mapping is the relationship between the models. English Document: Http://laravel-china.org/docs/

Laravel5 student score management system-04-Eloquent associated data tables are often associated with each other. For example, a blog post may have multiple comments, or an order may correspond to an order customer. Eloquent makes it easy to manage and process these associations, and supports multiple types of associations: One to One # One-to-one association is a basic Association. For example, a User mo

Data tables are often associated with each other. For example, a blog post might have multiple comments, or an order might correspond to a single customer. Eloquent makes it easy to manage and process these associations, and it also supports multiple types of associations: One One-to-a-correlation is a very basic association. For example, a User model might correspond to a Phone. To define this association, we must place the phone method on the U

Original address: http://blog.onlywan.cc/14843810761202.html Laravel Eloquent use of small notes Today, because of the need to develop a database business middle tier, we started to study laravel eloquent, because when we first started using the Laravel framework, we used Query Builder to write SQL similar to Db::connection (' MyDB ')->table (' Mylove ') ->where (' name ', ' Guowan '

MySQL Date_key field property is date,Using the All () method after creating the model with Laravel eloquent, the Date_key field returns only the year.Do not know whether the model time format to set or what the problem, seek guidance. The code is as follows:Model:Class Rpt_ep_read extends Model{ //protected $table = 'rpt_ep_read';protected $primaryKey = 'date_key'; }ControllerUse Appmodelsrptdatawebrpt_ep_read;Class TestController extends Controller

Eloquent is Laravel's original ActiveRecord is implemented, built on the Laravel fluent Query builder, so the eloquent class and the fluent class are the same, can implement complex SQL statements and very visually express the relationship between tables and tables. This article on this to start learning, I hope to be helpful to everyone. A user may have multiple articles, an article written by a user, whi

Eloquent batch update of multiple records (update when present, insert when not present) It is not a batch assignment of multiple fields to a record. Similar BULK INSERT: DB::table('users')->insert(array( array('email' => 'aaa@example.com', 'name' => 'zhangsan', 'age'=> 0), array('email' => 'bbb@example.com', 'name' => 'wangwu', 'age'=> 0), ...)); There are no similar statements: DB::table('users')->update( array( array('email' => 'aaa@example.co

Eloquent is implemented by the original ActiveRecord of Laravel and is built on FluentQueryBuilder of Laravel. Therefore, the Eloquent class is the same as the Fluent class, it can implement complex SQL statements and intuitively express the relationship between tables. One user may have multiple articles, and one article is written by a user. This is the relationship. The same article may contain multiple

I want to insert the data using the Create method in eloquent in Laravel. This method returns the Model object by default, but how do you know if the inserted data is successful? The previous frame will return a bool type. The Create method code is as follows: public static function create(array $attributes = []) { $model = new static($attributes); $model->save(); return $model; } Reply content: I want to insert the dat

Laravel 5 Framework Learning eloquent relationship, laraveleloquent A user may have multiple articles, an article written by a user, which is a relationship. The same article may contain multiple tags, while a tag may have multiple articles associated with it. In the project, we already have the user.php, which is the user model, to look at, rather simple. We want to get all the articles directly in the form of $user->articles (), let's modify the us

This is a creation in Article, where the information may have evolved or changed. Gorose (Go ORM), a small and powerful Go language database operation Orm, inspired by the Laravel database operation Orm, that is eloquent, PHP, Python, Ruby, will like this ORM operation mode, Mainly chain operation is more coquettish-[English document] (https://github.com/gohouse/gorose)-[Chinese documents] (HTTPS://GITHUB.

1. Describe 1VS1 relationship For example, two tables, a departmental table, a manager's table, a department with only one manager, and a manager who controls only one department, which expresses a single relationship Class User extends Eloquent {OnePublic Function Dept () {return $this->hasone (' Dept '); This matches the eloquent model} Class Dept extends Eloquent