Several tables of laravel comment function

Laravel is a popular PHP framework that provides many convenient features to quickly build web applications. One of them is the comment system. Commenting system is one of the very common features in web applications. In this article, we will introduce several tables used by Laravel's comment functionality.

1. users table

First, we need a users table to store the user's basic information. In Laravel, this table is created by default. J needs to execute the command php artisan make:auth to generate the default user authentication system, which will generate the users table and corresponding authentication controller.

2. comments table

Next, we need a comments table to store the content of the comments. This table should contain the following fields:

• id (primary key)
• user_id (foreign key, mapped to the id field of the users table, indicating the commenter)
• content (Comment content)
• created_at (Comment creation time)

Through Laravel’s Eloquent ORM (Object Relational Mapping) feature, we can easily manipulate this table in the application.

3. commentables table

Next, we also need a commentables table to store each resource that may be commented on. Each resource type (such as articles, videos, pictures, etc.) will correspond to a table and be polymorphically related to the commentables table. In addition to the default id and timestamps fields, this table also requires the following fields:

• commentable_id (foreign key, mapped to the id field of the commented resource table)
• commentable_type (corresponding Class name of the commented resource table)

This design pattern is called "polymorphic association", which allows us to encapsulate different types of resources into a common comment function.

4. likes table

Finally, we can also create a likes table to store users’ likes on comments. This table should contain the following fields:

• id (primary key)
• user_id (foreign key, mapped to the id field of the users table, indicating the liker)
• comment_id (foreign key, mapped to the id field of the comments table, indicating the liked comment)

The above are the four tables required for the Laravel comment function. Correctly associate them, and you can Build a powerful comment system. It should be noted that in actual applications, some additional work needs to be done to ensure the security and stability of the comment system, such as implementing CSRF protection, limiting swiping in the comment area, and reviewing illegal content, etc.

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