Laravel Eloquent Model::find doesn't work

问题

This don't work:

$object = Model::find($id);

This works:

$object = Model::where('id', '=', $id)->first();

It doesn't make sense. Am I missing something? I'm using Laravel 5.2.36.

回答1:

id needs to be a primary key, see: https://laravel.com/api/5.2/Illuminate/Database/Eloquent/Model.html#method_find

回答2:

I had the same problem. I sorted out it, using the function intval() to transform $id to an integer value:

$id = intval($id);
$object = Model::find($id);

回答3:

public $primaryKey  = 'id';

make it a primary key in your model file or you can use

Model::firstOrNew(['id' => $id]);

but here id should be a fillable property in the model. for example

protected $fillable = ['id'];

来源：https://stackoverflow.com/questions/37719932/laravel-eloquent-modelfind-doesnt-work