Create pruning-workflows.md

Author: rmcdaniel

Diff for: docs/configuration/pruning-workflows.md

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+---
+sidebar_position: 6
+---
+
+# Pruning Workflows
+Sometimes you may want to periodically delete completed workflows that are no longer needed. To accomplish this, you may use the `model:prune` artisan command.
+
+```bash
+php artisan model:prune --model="Workflow\Models\StoredWorkflow"
+```
+
+By default, only completed workflows older than 1 month are pruned. You can control this via configuration setting.
+
+```php
+'prune_age' => '1 month',
+```
+
+You can schedule the `model:prune` artisan command in your application's `routes/console.php` file.
+
+```php
+Schedule::command('model:prune', [
+    '--model' => StoredWorkflow::class,
+])->daily();
+```
+
+You can also control which workflows are pruned by extending the base workflow model and implementing your own `prunable` method.
+
+```php
+public function prunable(): Builder
+{
+    //
+}
+```
+
+You may test the `model:prune` command with the `--pretend` option. When pretending, the `model:prune` command will report how many records would be pruned if the command were to actually run.
+
+```bash
+php artisan model:prune --model="Workflow\Models\StoredWorkflow" --pretend
+```