Is it possible to limit a columns string/words returned?

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Is it possible to limit a columns string/words returned?

Mainly for a rich text content which I want to limit to the first 20 characters which I will be using in a table.

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I can see it is with Eloquent Accessor. So in the model.

protected $appends = ['string_snippet'];

    public function getStringSnippetAttribute()
    {
		return Str::of($this->attributes['string'])->limit(40);
    }