Computes the difference between two texts to create a patch. Applies the patch onto another text,
allowing for errors.
This class implements the same API as all other google-diff-match-patch libs. It was created for
compatibility reason only.
public function actionDiff($document_history_id)
{
$model = History::findOne($document_history_id);
if (is_null($model)) {
throw new \yii\web\HttpException(404, Yii::t('burivuh', 'Record in the history does not exist'));
}
$document = Document::findOne($model->document_id);
$previous = History::find()->where(['document_id' => $model->document_id])->andWhere('created_at<:created_at', [':created_at' => $model->created_at])->orderBy('created_at DESC')->limit(1)->one();
$diffs = [];
if (!is_null($previous)) {
$dmp = new DiffMatchPatch();
$diffs = $dmp->diff_main($previous->content, $model->content, false);
}
return $this->render('diff', ['document' => $document, 'model' => $model, 'previous' => $previous, 'diffs' => $diffs]);
}
public function renderDiff($lastEdit)
{
$dmp = new DiffMatchPatch();
$diffs = $dmp->diff_main($this->content, $lastEdit->content, false);
$added = 0;
$deleted = 0;
foreach ($diffs as $diff) {
$length = mb_strlen($diff[1], 'utf-8');
if ($diff[0] == 1) {
$added += $length;
}
if ($diff[0] == -1) {
$deleted += $length;
}
}
$this->diff = $added . ':' . $deleted;
}
public static function boot()
{
parent::boot();
static::creating(function ($page) {
$slugifier = new Slugify();
$page->setJsonAttribute('metadata', 'author', UserProvider::getCurrentUserId());
$page->setJsonAttribute('metadata', 'slug', $slugifier->slugify($page->title));
});
static::created(function ($page) {
$revision = new PageRevision();
$revision->page_id = $page->id;
$revision->revision_id = 0;
$dmp = new DiffMatchPatch();
// Content patch
$contentPatches = $dmp->patch_make("", $page->content);
$revision->content_patch = $dmp->patch_toText($contentPatches);
// Metadata patch
$revision->metadata_patch = json_encode(JsonPatch::diff([], json_decode($page->metadata, 1)));
$revision->author = UserProvider::getCurrentUserId();
$revision->created_at = Carbon::now();
$revision->save();
});
static::updating(function ($updatingPage) {
// Get the page again from DB so we are sure we have up-to-date content to make the diff from
$page = Page::find($updatingPage->id);
$lastRevision = PageRevision::where('page_id', $page->id)->orderBy('revision_id', 'DESC')->firstOrFail();
$revision = new PageRevision();
$revision->page_id = $page->id;
$revision->revision_id = $lastRevision->revision_id + 1;
$dmp = new DiffMatchPatch();
// Content patch
$contentPatches = $dmp->patch_make($page->getOriginal('content'), $updatingPage->content);
$revision->content_patch = $dmp->patch_toText($contentPatches);
// Metadata patch
$revision->metadata_patch = json_encode(JsonPatch::diff(json_decode($page->metadata, 1), json_decode($updatingPage->metadata, 1)));
$revision->author = UserProvider::getCurrentUserId();
$revision->created_at = Carbon::now();
$revision->save();
});
}
