How to Resolve Custom Primary Key Conversion Issue in Laravel 5.2?

Laravel 5.2: Custom Primary Key Conversion Issue

When utilizing a string as a custom primary key for an Eloquent table in Laravel 5.2, an unexpected conversion issue arises. The "verification_token" column, which serves as the primary key in this scenario, is being returned as a numeric value of 0 when retrieving attributes from the model.

To resolve this issue, it is necessary to override default type casting. Normally, auto-incrementing tables assume that the ID is an integer, which leads to the problematic conversion. The solution involves explicitly specifying the following properties in the Eloquent model class:

<code class="php">protected $primaryKey = 'verification_token';
public $incrementing = false;</code>

Additionally, it is advisable to set the "keyType" property to "string" in Laravel 6.0 and above, as illustrated below:

<code class="php">protected $keyType = 'string';</code>

By making these modifications, Laravel will correctly treat the custom primary key as a string and avoid the unwanted conversion to an integer. This ensures accurate retrieval and manipulation of the data stored in the Eloquent model.

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