How to understand Laravle eloquent many-to-many model association

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What is a many-to-many relationship?

A model in Eloquent is a data table, which is usually associated with each other. Many-to-many association means that two tables have many relationships with each other. For example, a table stores user data.

Another table stores information about the article.

A user can collect multiple articles, and an article can also be collected by multiple users, which is a many-to-many association.

How to use many-to-many associations?

Many-to-many associations using Eloquent can easily query, modify, add, and delete associations between the two models.

A many-to-many association requires a record associated table (pivot table) in addition to the two related tables, which generally records the ID of the two models

Take a chestnut.

The three tables in our database are user.

Articles

Article_collections

We need to create two models, and the intermediate table model is not required.