Break audit date denorm migrations into two separate migrations

database/migrations/2017_12_12_010457_normalize_asset_last_audit_date.php

@@ -16,23 +16,14 @@ class NormalizeAssetLastAuditDate extends Migration
     public function up()
     {
 
-        Schema::table('assets', function (Blueprint $table) {
+        if (!Schema::hasColumn('assets', 'last_audit_date')) {
-            $table->datetime('last_audit_date')->after('assigned_type')->nullable()->default(null);
+            Schema::table('assets', function (Blueprint $table) {
-        });
+                $table->datetime('last_audit_date')->after('assigned_type')->nullable()->default(null);
-
+            });
-        // Grab the latest info from the Actionlog table where the action is 'audit'
-        $audits = Actionlog::selectRaw('MAX(created_at) AS created_at, item_id')->where('action_type', 'audit')->where('item_type', Asset::class)->groupBy('item_id')->orderBy('created_at', 'desc')->get();
-
-        if ($audits) {
-            foreach ($audits as $audit) {
-                $assets = Asset::where('id', $audit->item_id)->first();
-                $assets->last_audit_date = $audit->created_at;
-                $assets->unsetEventDispatcher();
-                $assets->save();
-            }
         }
 
 
+
     }
 
     /**
@@ -42,8 +33,10 @@ class NormalizeAssetLastAuditDate extends Migration
      */
     public function down()
     {
-        Schema::table('assets', function (Blueprint $table) {
+        if (Schema::hasColumn('assets', 'last_audit_date')) {
-            $table->dropColumn('last_audit_date');
+            Schema::table('assets', function (Blueprint $table) {
-        });
+                $table->dropColumn('last_audit_date');
+            });
+        }
     }
 }

database/migrations/2017_12_26_170856_re_normalize_last_audit.php

@@ -0,0 +1,46 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class ReNormalizeLastAudit extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+
+        if (Schema::hasColumn('assets', 'last_audit_date')) {
+            // Grab the latest info from the Actionlog table where the action is 'audit'
+            $audits = Actionlog::selectRaw('MAX(created_at) AS created_at, item_id')
+                ->where('action_type', 'audit')
+                ->where('item_type', Asset::class)
+                ->groupBy('item_id')
+                ->orderBy('created_at', 'desc')
+                ->get();
+
+            if ($audits) {
+                foreach ($audits as $audit) {
+                    $assets = Asset::where('id', $audit->item_id)->first();
+                    $assets->last_audit_date = $audit->created_at;
+                    $assets->unsetEventDispatcher();
+                    $assets->save();
+                }
+            }
+        }
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        //
+    }
+}