Merge pull request #4386 from introwit/patch-2

Fix explanation of automatic foreign key detection in 'One to many' relationship block

eloquent-relationships.md

@@ -225,7 +225,7 @@ Once the relationship has been defined, we can retrieve the `Post` model for a `
 
     echo $comment->post->title;
 
-In the example above, Eloquent will try to match the `post_id` from the `Comment` model to an `id` on the `Post` model. Eloquent determines the default foreign key name by examining the name of the relationship method and suffixing the method name with `_id`. However, if the foreign key on the `Comment` model is not `post_id`, you may pass a custom key name as the second argument to the `belongsTo` method:
+In the example above, Eloquent will try to match the `post_id` from the `Comment` model to an `id` on the `Post` model. Eloquent determines the default foreign key name by examining the name of the relationship method and suffixing the method name with a `_` followed by the name of the primary key column. However, if the foreign key on the `Comment` model is not `post_id`, you may pass a custom key name as the second argument to the `belongsTo` method:
 
     /**
      * Get the post that owns the comment.