eloquent ruby

: This article mainly introduces Laravel5 basics (11)-Eloquent relationships. For more information about PHP tutorials, see. A user may have multiple articles. one article is written by a user. this is the relationship. The same article may contain multiple tags, and one TAG may be associated with multiple articles. In the project, we already haveUser.php, That is, the user model. it is quite simple. We want to directly use$user->articles()To get all

: "2015-03-28 06:38:53", Updated_at: "2015-03-28 06:42:03"}>>> $article = app\article::where (' body ', ' Som E content ... ')->get ();=> [{ID: "1", Title: "My first Update title", Body: "Some content ...", Published_at: "2015-03-28 06:37:22", Created_ At: "2015-03-28 06:38:53", Updated_at: "2015-03-28 06:42:03"}]>>> $article = App\article::where (' body ', ' Some C Ontent ')->first ();=> {id: "1", Title: "My first Update title", Body: "Some content ...", Published_at: "2

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

Eloquent uses casts to process data # Overview Many times you want to use json to store data. using $ casts is the best option, but you can do more.Basic Here is the official document, link. There is also a RryTip video about casts, Use casts change your datetypeDeepen Then, let's further process this data relationship. Here is an example of a user image (avatar). we need to store the uploaded original image (original) and the processed small imag

Recently learning Laravel, with the version of 4.2, in the study of eloquent and then wrote an example to see two properties, Google a bit or not how to understand that you want to ask the following code ... protected $guard = array('email','password'); protected $fillable = array('nickname','email','password'); protected $hidden = array('password', 'remember_token');... What is the role of each of the three properties? Reply content:

Laravel's EloquentORM provides beautiful and concise ActiveRecord implementation to interact with databases. Each database table interacts with a corresponding "model. Before you start, remember to set configdatab Laravel's Eloquent ORM provides beautiful and concise ActiveRecord implementation to interact with databases. Each database table interacts with a corresponding "model. Before you start, remember to set config/datab Let's generate the

Eloquent basic usage Find an article with ID 2 to print its title $article = Article::find (2); Echo $article->title; Find the article titled "I am title" and print the ID $article = Article::where (' title ', ' I am the title ')->first (); Echo $article->id; Check out all the articles and cycle through all the headings $articles = Article::all (); The $articles obtained here is a collection of objects, which can be appended with '->toarray () '

Tags: control primary mina model delete name namespace PAC maintenanceRelated code in the model namespace App;Use Illuminate\database\eloquent\model;class Student extends model{//default corresponding to the model complex number, that is, students, if not, you need to specify the table nameprotected $table = ' student ';//Specify Table name//Default primary key is ID, if not, you need to specifyprotected $primaryKey = ' id ';//Automatic Maintenance ti

A friend recommended book (http://eloquentjavascript.net/), while not busy recently read the next. In general, this book is not suitable for beginners of JS, because the examples in it are relatively poor, less academic, and practical applications. I personally recommend head first JavaScript For JS books. In fact, it is said that all the books in the head first series are good. Every book has its merits. If you plan to read this book, you may just take a look at my notes... Note: The En

"," Body "and" U " Ser 1 Body "," published_at "=" 2015-03-31 08:00:00 "," Created_at "and" 2015-03-31 04:17:58 ", "Updated_at" = "2015-03-31 04:17:58", "excerpt" and "= null]] #你只能使用 articles () to Do the next work, such as the following query $user->articles ()->where (' title ', ' User 1 article ')->get (); #我们也可以通过 article get user>> > $article = app\article:: First ();=> {id: "1", user_id: "1", Title: "User 1 article", Body: "User 1 Body", publ Ished_at: "2015-03-31 08:00:00", Cr

in the model class:Public function scopeStatus ($ query, $ status = 1){Return $ query-> where ('status', $ status );}Next, we will test this method:$ Posts = Post: popular ()-> status (1)-> orderBy ('View', 'desc')-> get ();Foreach ($ posts as $ post ){Echo ' lt;'. $ post-> title. ' gt;'. $ post-> views. 'Views }The output is as follows:2. Model eventsEloquent also supports model events-events are triggered when a model is created, updated, or deleted

; $article = A Pp\article::find (1);=> {ID: "1", Title: "MY first Update Title ", Body:" Some content ... ", Published_at:" 2015-03-28 06:37:22 ", Created_at:" 2015-03-28 06:3 8:53 ", Updated_at:" 2015-03-28 06:42:03 "}>>> $article = app\article::where (' body ', ' Some content ... ')->ge T ();=> [{id: ' 1 ', title: ' My first Update Title ", Body:" Some content ... ", Published_at:" 2015-03-28 06:37:22 ", Created_at:" 2015-03-28 06:38: Updated_at: "2015-03-28 06:42:03"}]>>> $

Database Transaction Processing #You can use the transaction method to perform a set of database transaction operations:Db::Transaction(function(){Db::Table(' Users ')->update ([ ' votes ' => 1]) ; db::table ( ' posts ' ->delete (;} Note: transaction any exception thrown in the closure causes the transaction to be automatically rolled back. Sometimes you may need to start a business yourself:DB::beginTransaction();rollbackthe way you can roll back a transaction:DB::rollbac

[Solid Ruby Basics] Ruby Quick Start, solid ruby Quick Start Address: http://www.cnblogs.com/aiweixiao/p/6664301.html Document outline Scan the public account1. Ruby Installation 1.1) [install Ruby] Ruby installation on Linux/Un

Keywords: Ruby on Rails, instantrails, windows, getting started, tutorial I always wanted to try Ruby on Rails, but I was not familiar with Apache and MySQL, and I was not confident in setting up the rails environment. So I never started. After learning about instantrails, finally, we set up the Ruby on Rails Development Environment on Windows and started learni

Demonstrate Ruby's six characteristics that are easy to be misunderstood with actual code. The Code demonstrates ruby misunderstanding. Introduction: if you are a C ++ developer, you need to use Ruby to quickly execute some prototype designs. When you pick up a Ruby reference book (such as Pickaxe) or browse a Ruby web

1. Why Ruby? Why do many Java developers focus on Ruby? Ruby is a general-purpose scripting language created in Japan 10 years ago. It is a pure object-oriented language. Unlike Java, everything in ruby is an object. Ruby syntax mainly comes from smalltalk, Python and Ada.

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Tutorial on system management by writing scripts in Ruby, and ruby System Management Introduction Ruby is an extremely rich, free, simple, scalable, portable, and object-oriented scripting language. Recently, it is widely used in the Web field. To a certain extent, this is attributed to the very powerful Web application development framework Rails, Which is exact

Ruby on Rails Session 1: How to Build a Ruby on Rails on the Ubuntu., railsubuntuAbout Ruby on Rails Ruby on Rails is an application stack that provides developers with a framework to quickly create a variety of web applications. ruby on Rails does take a little while to ins