删除文章时，把文章包含的附件、封面等上传文件的标记改为“可删除”

extend/seven/behavior/ArchiveDel.php

@@ -0,0 +1,58 @@
+<?php
+/**
+ * @desc: 删除文章附件(包括不限于:上传图片,附件)
+ * @Author: Dr.Xing <ezfwork@foxmail.com>
+ * @Since: 2018/1/28 10:27
+ */
+
+namespace seven\behavior;
+
+use app\admin\model\Archives;
+use think\Model;
+
+class ArchiveDel
+{
+    public function run(&$params)
+    {
+        if ($params instanceof Archives){
+            $pk = $params->getPk();
+            $attachments = [];
+            array_push($attachments, $params['cover']);
+            //读取模型字段
+            $extra = model('PostsModelx')->get(['name'=>$params['type']]);
+            if(isset($extra['extra']) && !empty($extra['extra'])) {
+                //读取模型数据
+                $archive_model = model('extra' . $params['type'])->get(['item_id' => $params[$pk]]);
+                foreach (json_decode($extra['extra'],true) as $k=>$v)
+                {
+                    if(!isset($archive_model[$v['field']]) ||
+                        (isset($archive_model[$v['field']]) && empty($archive_model[$v['field']]))) {
+                        continue;
+                    }
+                    if($v['type']=='image'){
+                        array_push($attachments, $archive_model[$v['field']]);
+                    }
+                    elseif($v['type']=='images'){
+                        $arr = explode(",", $archive_model[$v['field']]);
+                        $attachments= array_merge($attachments, $arr);
+                    }
+                    elseif(in_array($v['type'], ['file','files'])){
+                        $arr= json_decode($archive_model[$v['field']],true);
+                        foreach($arr as $key=>$val){
+                            array_push($attachments, $val['url']);
+                        }
+                    }
+                }
+            }
+            model('extra' . $params['type'])->where(['item_id' => $params[$pk]])->delete();
+
+            //打上可删除标识
+            foreach ($attachments as $k => $v){
+                if(!empty($v)){
+                    model('Attachment')->where('url', $v)->update(['canDelete'=>1]);
+                }
+            }
+        }
+    }
+
+}