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On . By CodimTh
Category:

Question:

How to use string as foreign key in laravel 7 migrations ?

Example not working:

   $table->string('categorie_id');

    $table->foreign('categorie_id')->references('id')->on('categories');

Solution:

The problem is:  categorie_id is a string and id is an integer. 

to solve this you must have exactly the same definition, so they must be the same type.

Example:

in countries table:

$table->string('code')->primary();

in users table:

$table->string('country_code');
$table->foreign('country_code')->references('code')->on('countries');

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Riadh Rahmi

Senior Web Developer (Drupal & Laravel)

I am a senior web developer, I have experience in planning and developing large scale dynamic web applications especially in Drupal and Laravel.

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