eloquent javascript

1. Introduction When building Jsonapi, it is often necessary to convert models and association relationships to arrays or JSON. Eloquent includes a convenient way to implement these transformations, and to control which properties are included in the serialization. 2. Basic use The conversion model is an array To convert a model and its associated relationships to an array, you can use the ToArray method. This method is recursive, so all propertie

When using Laravel's orm--eloquent, one of the most frequently encountered operations is to take some of the properties in the model, and the corresponding is to fetch a specific column of the table in the database.If you use the DB façade to write query constructors, you only need to call the Select () method chained:$users = db::table (' users ')->select (' name ', ' email as User_email ')->get ();There are two ways of using

Eloquent relationships Shorthand table there is a big pit in the Model association: When the Belongsto is reversed, the foreign key is automatically searched by the method name plus _id. In addition, the association is based on the model name plus _id as the foreign key. Type Define Inverse Remark One to one HasOne Belongsto Withdefault ()Define default foreign key→based on the model nameInverse defau

: 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

"," 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

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.COM/GOHOUSE/GOROSE/BLOB /MASTER/README-ZH_CN.

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

flicker. " Task 3: Read a good manual about JavaScript Once you've learned through the Codecademy, you'll want to get a detailed description of JavaScript-describe all types, operators, control schemas, and so on. If you can, let me introduce you to a few good instructions: "JavaScript Again" – This manual can be found on the Mozilla Developer Network, langu

User [{ id:1, name: "Jack", Age : "$", city_id:1, job_id:1 }, { id:2, name: " Yoyo ", Age :" ", city_id:2, job_id:2 }]; City [{ id:1,

Ask for a laravel. How to get the list, for example I have a Superman table, a ability table, a Superman one ability, now I would like to make a table, show Superman's name and Superman ability, do not need for a loop to how to write it? Reply

Original from: Https://jellybool.com/post/laravel-get-next-and-prev-posts-with-eloque ... First the origin of the article comes with a question above SF: Laravel eloquent ORM How to get the next bar of the current record Then, a simple