Relationship between Eloquent in Laravel 5 framework learning, laraveleloquent
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 have User. php, that is, the User model. It is quite simple to check. We want to get all the articles in the form of $ user-> articles (). Let's modify the
Laravel 5 Foundation (11)-Eloquent relationship
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 User.php , that is the user model, to look at, quite simple. We want to $user->articles() get all the articles in the form of direct use, let's modify the user model:
public fun
When writing the API, the data is generally transmitted in JSON format, and no objects can be used directly. At this time, the serialization of data conversion is very important, eloquent provides a very convenient method and conventions, not only can be converted, but also control the key values inside.Basic usage transforms a model into arrays
$user = App\User::with(‘roles‘)->first();
return $user->toArray();
Convert a model i
This article mainly introduces about Laravel's eloquent model introduction, has certain reference value, now shares to everybody, has the need friend can refer to
Eloquent model
The default inherits the use illuminate\database\eloquent\model class.
Data table name and model name conventions:
The table name of the database is typically named by the Serpentine n
Laravel5 framework learning: Eloquent (laravel's ORM) and laraveleloquent. Eloquent (laravel ORM) for Laravel5 framework learning. the code for copying the first model is as follows: phpartisanmake: modelArticle # output Modelcreat Laravel 5 framework learning Eloquent (laravel ORM), laraveleloquent
Let's generate the first model.
The code is as follows:Php art
Please illustrate, thank you!
Reply content:
Please illustrate, thank you!
The answer to self-laravel blog post: "Study notes-data and model start" (https://www.insp.top/article/learn-laravel-database-and-model-foundation) For you this problem has been censored, want to know more directly read the original.
To get a look at those things about database components first (that's eloquent ORM)
The database component is roughly three layer
Label:createclassctiderbyupd guardsaveoda primary key A. DB façade 1.insert db::insert (' INSERT into table (' name ') ' Value (?) ', [' Test ']);
2.update db::update (' Update into table set name=? Where id=? ', [' Test ', 10]);
3.delete DB::d elete (' delete from TB where id=? ', [1]);
4.select db:select (' select * from TB ');
Two. Query Builder 1.insert db::table (' TB ')->insert ([' name ' = ' test ']);
2.update db::table (' TB ')->where (' id ', 1)->update ([' name ' = ' test ']);
1. Defining the Modelnamespace App;Use Illuminate\database\eloquent\model; class Flight extends model{protected $table = ' my_flights ';protected $primaryKey = ' my_id ';Public $timestamps = false; }2. Get all the data in the table All/get$flights = Flight::all ();$flights = App\flight::where (' active ', 1)->orderby (' name ', ' desc ')->take (10)->get ();3.find and first get a single record//$flight = App\flight::find (1);$flight = App\fligh
The table structure is as follows:
表名:projects字段:id, name表名:projects_services(1 project_id
If I want to use Laravel's eloquent query the following information, how should it be implemented?
script_id, Script_name, Module_name, service_name, project_name
Reply content:
The table structure is as follows:
表名:projects字段:id, name表名:projects_services(1 project_id
If I want to use Laravel's eloquent query t
PHP laravel Framework Multi-table relational processing eloquent one-to-many relationship processingThis 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 ord
1. Create the Model
1.1 Creating a model using the Save method
Call the Save method of the eloquent model class to create the model and insert the data into the database:
$post = new Post;$post->title = ' Test 4 ';$post->content = ' test content ';$post->user_id = 1;$post->cat_id = 1;if ($post->save ()) {Echo ' Add article success! ';}else{Echo ' Add article failed! ';}
Access Http://laravel.app:8000/test in the browser if the output is:
Add arti
Guide: In the use of the Laravel ORM model method Find, GET, the "the" the data object returned when the Attributes property array of Data objects will contain all the fields in the data table corresponding ... Original address: http://www.bcty365.com/content-153-5939-1.html
When using the Laravel ORM Model method Find, get, the Attributes property array of the data object returned when the method gets the data object contains the key value relationships for all the fields in the datasheet. So h
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
Please give an example. thank you! Please give an example. thank you!
Reply content:
Please give an example. thank you!
This answer is taken from my blog article: laravel study Notes-data and model start article (https://www.insp.top/article/learn-laravel-database-and-model-foundation) for you to delete this question, want to know more directly read the original.
First, let's take a look at the database components (that is, Eloquent ORM)
Datab
recently in learning Laravel, I think the ORM function is very powerful, I'm just a little explored here, if there are better notes, please share.
Because the focus is eloquent ORM, so the routing settings, the controller is not described in detail, here directly into the models module.
1. Database Preparation (MYSQL)
Here you need to create two tables of users and Users_ext, and initialize the data:
1 CREATE TABLE2 IF not EXISTSUsers (3Iaut
Eloquent does not assign values to multiple fields of a record in batches when multiple records are updated (update when the record exists and insert when the record does not exist. Similar to batch insert: {code ...} are there similar statements: {code ...} the following functions are implemented: 1. if the query condition exists, update the original data in batches. {generation... eloquent batch update mu
Recently in learning Laravel, I think the ORM function is very powerful, I'm just a little explored here, if there are better notes, please share.Because the focus is eloquent ORM, so the routing settings, the controller is not described in detail, here directly into the models module.1. Database Preparation (MYSQL)Here you need to create two tables of users and Users_ext, and initialize the data: 1 CREATE TABLE2 IF not EXISTSUsers (3IautoidINT( O
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
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