Suggestion, add getTag method to Taggable trait to qucikly check if has tag

[MordiSacks]

This a suggestion, I would send a pull request but I'm not very familiar with unit testing my suggestion is to add this method

   /**
     * Get specific tag if is attached to this model
     *
     * @param int|string|Tag $tag
     *
     * @return Tag|null
     */
    public function getTag($tag)
    {
        $query = $this->tags();

        if ($tag instanceof Tag) {
            $tag = $tag->tag_id;
        }

        if (is_int($tag)) {
            $query->where('taggable_taggables.tag_id', $tag);
        } elseif (is_string($tag)) {
            $normalized = call_user_func(config('taggable.normalizer'), $tag);
            $query->where('normalized', $normalized);
        } else {
            return null;
        }

        return $query->get()->first();
    }

then if you want to check if the model has that tag just do like this

// by id
$model->getTag(1); // return null or Tag

// by name
$model->getTag('my tag'); // return null or Tag

// by tag instance
$model->getTag(Tag::all()->fist()); // return null or Tag

One way this could be useful

<select multiple>
    <?php foreach ($tags as $tag): ?>
        <option value="<?php echo $tag->name ?>" <?php echo $model->getTag($tag) ? 'selected' : '' ?>>
            <?php echo $tag->name ?>
        </option>
    <?php endforeach; ?>
</select>

[cviebrock]

I've added hasTag() to version 3.5.1, so this should work:

<select multiple>
    <?php foreach ($tags as $tag): ?>
        <option value="<?php echo $tag->name ?>" <?php echo $model->hasTag($tag) ? 'selected' : '' ?>>
            <?php echo $tag->name ?>
        </option>
    <?php endforeach; ?>
</select>