Category: Laravel custom pivot table name
Laravel custom pivot table name
When building an API, you may need a transformation layer that sits between your Eloquent models and the JSON responses that are actually returned to your application's users.
Laravel's resource classes allow you to expressively and easily transform your models and model collections into JSON. To generate a resource class, you may use the make:resource Artisan command. In addition to generating resources that transform individual models, you may generate resources that are responsible for transforming collections of models. This allows your response to include links and other meta information that is relevant to an entire collection of a given resource.
To create a resource collection, you should use the --collection flag when creating the resource. Or, including the word Collection in the resource name will indicate to Laravel that it should create a collection resource. You are highly encouraged to read the other sections of this documentation to gain a deeper understanding of the customization and power offered to you by resources.
Before diving into all of the options available to you when writing resources, let's first take a high-level look at how resources are used within Laravel.
A resource class represents a single model that needs to be transformed into a JSON structure. For example, here is a simple User resource class:. Every resource class defines a toArray method which returns the array of attributes that should be converted to JSON when sending the response. This is because a resource class will automatically proxy property and method access down to the underlying model for convenient access. Once the resource is defined, it may be returned from a route or controller:.
If you are returning a collection of resources or a paginated response, you may use the collection method when creating the resource instance in your route or controller:. Note that this does not allow any addition of meta data that may need to be returned with the collection. If you would like to customize the resource collection response, you may create a dedicated resource to represent the collection:. Once the resource collection class has been generated, you may easily define any meta data that should be included with the response:.
When returning a resource collection from a route, Laravel resets the collection's keys so that they are in simple numerical order. However, you may add a preserveKeys property to your resource class indicating if collection keys should be preserved:.
When the preserveKeys property is set to truecollection keys will be preserved:. The singular resource class is assumed to be the collection's class name without the trailing Collection string. For example, UserCollection will attempt to map the given user instances into the User resource. In essence, resources are simple. They only need to transform a given model into an array.
So, each resource contains a toArray method which translates your model's attributes into an API friendly array that can be returned to your users:. If you would like to include related resources in your response, you may add them to the array returned by your toArray method.
In this example, we will use the Post resource's collection method to add the user's blog posts to the resource response:. While resources translate a single model into an array, resource collections translate a collection of models into an array. It is not absolutely necessary to define a resource collection class for each one of your model types since all resources provide a collection method to generate an "ad-hoc" resource collection on the fly:.
However, if you need to customize the meta data returned with the collection, it will be necessary to define a resource collection:. Like singular resources, resource collections may be returned directly from routes or controllers:.
By default, your outermost resource is wrapped in a data key when the resource response is converted to JSON. So, for example, a typical resource collection response looks like the following:. If you would like to disable the wrapping of the outermost resource, you may use the withoutWrapping method on the base resource class.
Typically, you should call this method from your AppServiceProvider or another service provider that is loaded on every request to your application:. You have total freedom to determine how your resource's relationships are wrapped. If you would like all resource collections to be wrapped in a data key, regardless of their nesting, you should define a resource collection class for each resource and return the collection within a data key.Eloquent is a powerful Laravel ORM, and it allows to define relationships pretty easily.
But do you know all about its functionality? In addition to the article, each section will have a mini demo-project with link to GitHub and video explanation. To have relationships between database tables, first you still need to take care of database fields and foreign keys. Usually, in database migration statement it looks something like this:. Important thing: we also may specify the behavior for the delete and update actions on related tables.
In other words, if we delete a user, what should happen to their posts? We will take a look at the most often example — when User has a Profile but they are in separate database tables.
In Laravel it would work with models User and UserProfile. But if in your case fields are different, you can add them as parameters. For example, if you had a field users. On the other hand, we may also have a relationship from UserProfile to User model, a reverse from hasOne.
This one is called belongsTo. Again, Laravel automatically decides what fields are used in relationship — but you can override them with additional parameters:. So one additional query for each movie. And if you view the table with movies, it may significantly impact the page load. See the with function here? This will perform only one additional query for all movies.
Generally talking about performance, I always advice to have Laravel Debugbar package turned on locally, and to check Queries tab. The next type of relationships is one-to-many. It is used when entry in one database table can have many related entries in another table. In terms of database schema, nothing really changes from one-to-one — a foreign key from child table to the parent table:.
We take a popular example: Books and their Authors. So every book belongs to one author, and one author can have many books written. In Laravel it would work with models Author and Book. We can define relationship in both models. It has absolutely identical syntax:.
In this case we have books.Migrations are like version control for your database, allowing your team to modify and share the application's database schema. Migrations are typically paired with Laravel's schema builder to build your application's database schema. If you have ever had to tell a teammate to manually add a column to their local database schema, you've faced the problem that database migrations solve.
The Laravel Schema facade provides database agnostic support for creating and manipulating tables across all of Laravel's supported database systems. To create a migration, use the make:migration Artisan command :. Each migration file name contains a timestamp, which allows Laravel to determine the order of the migrations. The --table and --create options may also be used to indicate the name of the table and whether or not the migration will be creating a new table. These options pre-fill the generated migration stub file with the specified table:.
If you would like to specify a custom output path for the generated migration, you may use the --path option when executing the make:migration command.
The given path should be relative to your application's base path. A migration class contains two methods: up and down. The up method is used to add new tables, columns, or indexes to your database, while the down method should reverse the operations performed by the up method. Within both of these methods you may use the Laravel schema builder to expressively create and modify tables.
To learn about all of the methods available on the Schema builder, check out its documentation. For example, the following migration creates a flights table:. Some migration operations are destructive, which means they may cause you to lose data.
In order to protect you from running these commands against your production database, you will be prompted for confirmation before the commands are executed. To force the commands to run without a prompt, use the --force flag:. To roll back the latest migration operation, you may use the rollback command. This command rolls back the last "batch" of migrations, which may include multiple migration files:. You may roll back a limited number of migrations by providing the step option to the rollback command.
For example, the following command will roll back the last five migrations:. The migrate:refresh command will roll back all of your migrations and then execute the migrate command. This command effectively re-creates your entire database:. The migrate:fresh command will drop all tables from the database and then execute the migrate command:. To create a new database table, use the create method on the Schema facade.
The create method accepts two arguments: the first is the name of the table, while the second is a Closure which receives a Blueprint object that may be used to define the new table:. When creating the table, you may use any of the schema builder's column methods to define the table's columns. You may check for the existence of a table or column using the hasTable and hasColumn methods:. If you want to perform a schema operation on a database connection that is not your default connection, use the connection method:.
To drop an existing table, you may use the drop or dropIfExists methods:. Before renaming a table, you should verify that any foreign key constraints on the table have an explicit name in your migration files instead of letting Laravel assign a convention based name. Otherwise, the foreign key constraint name will refer to the old table name.
The table method on the Schema facade may be used to update existing tables. Like the create method, the table method accepts two arguments: the name of the table and a Closure that receives a Blueprint instance you may use to add columns to the table:.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again.
Eloquent: Getting Started
If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. I keep forgetting what this looks like, no one else seems to have a simple example to refer to. Everyone seems to cover the Model set up.
So, mostly for myself, I have a simple example I can use as a snippet. Hope you find it useful. This is simply an example of the pivot table you'd need for Laravel 5 Many to Many relationships. Skip to content.
Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. This is a simple example of a Laravel 5 pivot table. I always forget what it looks like, so I just made a sample migration file. PHP Branch: master. Find file. Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again.Each database table has a corresponding "Model" which is used to interact with that table.
Models allow you to query for data in your tables, as well as insert new records into the table. For more information on configuring your database, check out the documentation. To get started, let's create an Eloquent model. Models typically live in the app directory, but you are free to place them anywhere that can be auto-loaded according to your composer.
The easiest way to create a model instance is using the make:model Artisan command :. If you would like to generate a database migration when you generate the model, you may use the --migration or -m option:.
Now, let's look at an example Flight model, which we will use to retrieve and store information from our flights database table:. Note that we did not tell Eloquent which table to use for our Flight model.
By convention, the "snake case", plural name of the class will be used as the table name unless another name is explicitly specified. So, in this case, Eloquent will assume the Flight model stores records in the flights table. You may specify a custom table by defining a table property on your model:. Eloquent will also assume that each table has a primary key column named id.Excel Pivot Tables - Add a Column with Custom Text
In addition, Eloquent assumes that the primary key is an incrementing integer value, which means that by default the primary key will automatically be cast to an int. This property determines how date attributes are stored in the database, as well as their format when the model is serialized to an array or JSON:. By default, all Eloquent models will use the default database connection configured for your application.
Once you have created a model and its associated database tableyou are ready to start retrieving data from your database. Think of each Eloquent model as a powerful query builder allowing you to fluently query the database table associated with the model. For example:. The Eloquent all method will return all of the results in the model's table.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. When I sync with detach, if I want to use laravel model events, like deletedthe id parameters is not filled in detachUsingCustomClass.
I'll leave this open for now and come back at a later time. Appreciating any help in the meantime. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. New issue. Jump to bottom. Labels needs more info. Copy link Quote reply. Laravel Version: 6. This comment has been minimized. Sign in to view. Please post full steps to reproduce. Sign up for free to join this conversation on GitHub.
Already have an account? Sign in to comment. Linked pull requests. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window.Database tables are often related to one another. For example, a blog post may have many comments, or an order could be related to the user who placed it.
Eloquent makes managing and working with these relationships easy, and supports several different types of relationships:. Eloquent relationships are defined as functions on your Eloquent model classes. Since, like Eloquent models themselves, relationships also serve as powerful query buildersdefining relationships as functions provides powerful method chaining and querying capabilities.
For example, we may chain additional constraints on this posts relationship:. A one-to-one relationship is a very basic relation.
For example, a User model might be associated with one Phone. To define this relationship, we place a phone method on the User model. The phone method should call the hasOne method and return its result:. The first argument passed to the hasOne method is the name of the related model.
Once the relationship is defined, we may retrieve the related record using Eloquent's dynamic properties. Dynamic properties allow you to access relationship functions as if they were properties defined on the model:. Eloquent determines the foreign key of the relationship based on the model name. If you wish to override this convention, you may pass a second argument to the hasOne method:.
If you would like the relationship to use a value other than idyou may pass a third argument to the hasOne method specifying your custom key:. So, we can access the Phone model from our User.
Now, let's define a relationship on the Phone model that will let us access the User that owns the phone. We can define the inverse of a hasOne relationship using the belongsTo method:. If your parent model does not use id as its primary key, or you wish to join the child model to a different column, you may pass a third argument to the belongsTo method specifying your parent table's custom key:.
A "one-to-many" relationship is used to define relationships where a single model owns any amount of other models. For example, a blog post may have an infinite number of comments.
Like all other Eloquent relationships, one-to-many relationships are defined by placing a function on your Eloquent model:.