codebright

Eloquent Relationships 347
Let’s build two example tables.
books
1 +---------+------------------------+
2 | id (PK) | name |
3 +---------+------------------------+
4 | 1 | Code Sexy |
5 | 2 | Code Dutch |
6 | 3 | Code Bright |
7 +----------------------------------+
Here’s our Book table with three books held within. You will notice that each table has a unique
integer primary key as required by the Eloquent ORM. This can be used to identify each individual
row. Now let’s take a look at the second table.
authors
1 +---------+------------------------+
2 | id (PK) | name |
3 +---------+------------------------+
4 | 1 | Dayle Rees |
5 | 2 | Matthew Machuga |
6 | 3 | Shawn McCool |
7 +----------------------------------+
Here we have another table containing the names of three fantastically handsome developers. We
will call this the Author table. Notice how each row once again has an integer primary key that can
be used as a unique identifier?
Right, let’s form a relationship between the two tables. This is a relationship between a Book and
an Author, we will ignore co-authorship for now and assume that a book will only have a single
author. Let’s add a new column to the Book table.
books