Let's talk about some common methods and related methods in laravel orm

Laravel is a popular PHP web development framework that provides many convenient development tools and elegant coding style. Among them, ORM (Object-Relational Mapping) is a core module of Laravel, which allows developers to operate database tables in an object-oriented manner, improving programming efficiency and code quality.

In Laravel ORM, there are many powerful methods that allow developers to quickly and easily complete CRUD operations in order to manage various data. The following will introduce some common query methods and correlation methods of Laravel ORM.

Query method:

1. get(): Get all records in the database table.
2. first(): Get a database table record.
3. find(): Retrieve database table records based on primary key ID.
4. where(): Retrieve database table records based on specified conditions.
5. orderBy(): Sort the retrieved records by the specified column.
6. limit(): Limit the number of retrieved records.
7. offset(): Skip the specified number of records.
8. select(): Specify the columns to be retrieved.
9. count(): Returns the number of records that meet the conditions.
10. max(), min(), sum(), avg(): Return the maximum value, minimum value, sum and average value that meet the specified conditions respectively.

Association methods:

1. hasOne(): Defines a one-to-one relationship.
2. hasMany(): Define one-to-many relationship.
3. belongsTo(): ​​Define a reverse one-to-one relationship.
4. belongsToMany(): Define many-to-many relationship.
5. morphTo(): ​​Define polymorphic relationships.
6. morphMany(): Define one-to-many polymorphic relationship.
7. morphToMany(): Defines a many-to-many polymorphic relationship.
8. with(): Define the preloading relationship.

In addition, Laravel ORM also provides many other features, such as model events, global scope, dynamic properties, etc., which can further improve development efficiency and program quality.

Summary:

The above are some common methods and related methods in Laravel ORM, which can easily perform database CRUD operations, allowing developers to save a lot of time and energy. Proficient in these methods can make Laravel development more efficient and convenient, and promote Laravel to become more mature and perfect.

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