Laravel belongsToMany pivot with multiple columns
Stefan Bogdanescu
Founder & Senior Architect · 2026-06-29
Title: Laravel belongsToMany Pivot with Multiple Columns for Member Types
In this blog post, we'll discuss how to handle multiple columns in the pivot table while utilizing the belongsToMany relationship between two models (in our example, teams and members) in Laravel. We will also cover expanding the pivot table to include a member type for each team and connecting it with another model/table.
Firstly, let's understand the basics of the belongsToMany relationship. The relationship allows you to define several models that can relate to one another through a common third table, which represents their association. This is useful when one model has multiple relationships with other models, and vice versa. Let's assume we have two models:
1. Team Model (class: Teams): Stores the team details.
2. Member Model (class: Members): Stores member details.
To establish a connection between these models through a pivot table named 'team_member', use the belongsToMany() method as follows:
```php
public function teams()
{
return $this->belongsToMany(Team::class);
}
public function members()
{
return $this->belongsToMany(Member::class);
}
```
Now, let's expand the pivot table to include the member type:
1. Define a new model for the types of team membership. (class: MemberTypes)
2. Create a pivot table named 'team_member_type', which will have three fields to store the relationships between members, teams, and their respective roles on each team.
- team_id (FK to Team's id): The team ID associated with this relationship.
- member_id (FK to Member's id): The member ID for this particular association.
- member_type_id: A new column representing the specific role of a member on each team, linking to the MemberTypes table.
3. Update the relationships in both models as required:
- Team Model (class: Teams) adds belongsToMany() relation with MemberTypes through the 'team_member_type' pivot table.
- Member Model (class: Members) adds belongsToMany() relation with both Teams and MemberTypes, establishing a many-to-many relationship between members, teams, and their roles/types.
Your relationships in both models will then be as follows:
```php
public function teamMemberRelationships()
{
return $this->belongsToMany(Teams::class, 'team_member_type')
->withPivot(['member_type_id'])
->as('team_member_relationship');
}
public function memberTypeRelationships()
{
return $this->belongsToMany(MemberTypes::class);
}
```
With these relationships, you can now access the team, member, and their types as follows:
1. From a Team instance, get all members with their roles/types related to that particular team using `$teamInstance->team_member_relationships`.
2. From a Member instance, get all teams they belong to along with their respective roles/types using `$memberInstance->teams_belonging_to_me`.
3. If you want all the members of a particular role/type in a team, first get the Team instance and then get the Member instances associated with that specific member type.
In conclusion, by implementing these changes, we've expanded the basic belongsToMany relationship to establish relationships for multiple columns in the pivot table while allowing for connections between team members, their roles/types, and their respective teams. This flexibility enables you to create more complex but logical data models in your Laravel application.