Laravel Accessors are Model methods that allow Eloquent attributes to be formatted or processed when they are retrieved.

To set up an Accessor, add a suitable method in the Model class. The database column is determined by the method name, which hence needs to be in a certain format:

get{ColumnName}Attribute

Note that the column name needs to be written in StudlyCaps (PascalCase) - the first letter of each sub-word (including the first) is capitalised.

An accessor that takes a string saved in the post_title column and converts it to uppercase in the Eloquent attribute would look like this:

<?php
public function getPostTitleAttribute($title)
    {
      $this->attributes['post_title'] = strtoupper($title);
    }

The method receives the value of the attribute, and is automatically called when the value of the attribute is retrieved.

In the view for this example:

@foreach($posts as $post)
  <h2>{{$post->title}}</h2>
@endforeach

…titles will be capitailsed.

When the attribute is accessed, it will be in uppercase. The string stored in the database remains unchanged.

References

Laravel Docs: Accessors & Mutators