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Example code of ajcastro/eager-load-pivot-relations

Informations about the package eager-load-pivot-relations

Laravel Eloquent: Eager Load Pivot Relations

Eager load pivot relations for Laravel Eloquent's BelongsToMany relation.
Medium Story: https://medium.com/@ajcastro29/laravel-eloquent-eager-load-pivot-relations-dba579f3fd3a

Installation

Usage and Example

There are use-cases where in a pivot model has relations to be eager loaded. Example, in a procurement system, we have the following:

Tables

Models

From the code above, plans and items has Many-to-Many relationship. Each item in a plan has a selected unit, unit of measurement. It also possible for other scenario that the pivot model will have other many relations.

Eager Loading Pivot Relations

Use keyword pivot in eager loading pivot models. So from the example above, the pivot model PlanItem can eager load the unit relation by doing this:

The resulting data structure will be:

image

You may also access other relations for example:

Custom Pivot Accessor

You can customize the "pivot accessor", so instead of using the keyword pivot, we can declare it as planItem. Just chain the as() method in the definition of the BelongsToMany relation.

Make sure we also use the trait to our main model which is the Plan model, because the package needs to acess the belongsToMany relation (items relation) to recognize the used pivot acessor.

So instead of using pivot, we can eager load it by defined pivot accessor planItem.

Other Examples and Use-cases

https://github.com/ajcastro/eager-load-pivot-relations-examples

All versions of eager-load-pivot-relations with dependencies

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Requires php Version >=5.6.0
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