Merge pull request #156 from VentureCraft/develop

Allow limiting revision count, and removing old revisions.

readme.md

@@ -128,6 +128,19 @@ class Article extends Eloquent {
     protected $historyLimit = 500; //Stop tracking revisions after 500 changes have been made.
 }
 ```
+In order to maintain a limit on history, but instead of stopping tracking revisions if you want to remove old revisions, you can accomodate that feature by setting `$revisionCleanup`. 
+
+```php
+namespace MyApp\Models;
+
+class Article extends Eloquent {
+    use Venturecraft\Revisionable\RevisionableTrait;
+
+    protected $revisionEnabled = true;
+    protected $revisionCleanup = true; //Remove old revisions (works only when used with $historyLimit)
+    protected $historyLimit = 500; //Maintain a maximum of 500 changes at any point of time, while cleaning up old revisions.
+}
+```
 
 ### Storing soft deletes
 

src/Venturecraft/Revisionable/RevisionableTrait.php

@@ -156,9 +156,14 @@ public function postSave()
         } else {
             $LimitReached = false;
         }
+        if (isset($this->revisionCleanup)){
+            $RevisionCleanup=$this->revisionCleanup;
+        }else{
+            $RevisionCleanup=false;
+        }
 
         // check if the model already exists
-        if (((!isset($this->revisionEnabled) || $this->revisionEnabled) && $this->updating) && !$LimitReached) {
+        if (((!isset($this->revisionEnabled) || $this->revisionEnabled) && $this->updating) && (!$LimitReached || $RevisionCleanup)) {
             // if it does, it means we're updating
 
             $changes_to_record = $this->changedRevisionableFields();
@@ -179,6 +184,12 @@ public function postSave()
             }
 
             if (count($revisions) > 0) {
+                if($LimitReached && $RevisionCleanup){
+                    $toDelete = $this->revisionHistory()->orderBy('id','asc')->limit(count($revisions))->get();
+                    foreach($toDelete as $delete){
+                        $delete->delete();
+                    }
+                }
                 $revision = new Revision;
                 \DB::table($revision->getTable())->insert($revisions);
             }