first commit

app/Models/Traits/BelongsToCategory.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Models\Traits;
+
+use App\Models\Category;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+trait BelongsToCategory
+{
+
+    /**
+     * 关联分类表
+     * @author 玄尘 2020-03-05
+     * @return BelongsTo
+     */
+    public function category(): BelongsTo
+    {
+        return $this->belongsTo(Category::class)->withDefault();
+    }
+
+}

app/Models/Traits/HasOneCover.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Models\Traits;
+
+use Illuminate\Support\Facades\Storage;
+
+trait HasOneCover
+{
+
+    /**
+     * 拼接图片全地址
+     * @author 玄尘 2020-03-05
+     * @return string
+     */
+    public function getCoverPathAttribute(): ?string
+    {
+        if ($this->cover) {
+            return Storage::url($this->cover);
+        } else {
+            return '';
+        }
+    }
+
+}