first

app/Models/Advert.php

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+<?php
+
+namespace App\Models;
+
+use App\Models\Traits\BelongsToCategory;
+use App\Models\Traits\HasOneCover;
+use App\Models\Traits\OrderByIdDesc;
+use App\Scopes\SortScope;
+
+class Advert extends Model
+{
+
+    use HasOneCover,
+        BelongsToCategory;
+}

app/Models/Article.php

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+<?php
+
+namespace App\Models;
+
+use App\Models\Traits\BelongsToCategory;
+use App\Models\Traits\HasOneCover;
+
+class Article extends Model
+{
+
+    use HasOneCover, BelongsToCategory;
+
+    public function getLinkAttribute()
+    {
+        return route('article.show', $this);
+    }
+
+}

app/Models/Category.php

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+<?php
+
+namespace App\Models;
+
+use Encore\Admin\Traits\AdminBuilder;
+use Encore\Admin\Traits\ModelTree;
+
+class Category extends Model
+{
+
+    use AdminBuilder, ModelTree;
+
+    public const TYPE_SHOW    = 'show';
+    public const TYPE_ARTICLE = 'article';
+    public const TYPE_ADVERT  = 'advert';
+
+    public const TYPES = [
+        self::TYPE_ARTICLE => '文章列表',
+        self::TYPE_SHOW    => '文章详情',
+        self::TYPE_ADVERT  => '图片',
+    ];
+
+    public function getLinkAttribute()
+    {
+        return route('category.show', $this);
+    }
+
+    /**
+     * 关联的数据
+     * @return [type] [description]
+     */
+    public function relations()
+    {
+        switch ($this->type) {
+            case self::TYPE_SHOW:
+                return $this->belongsTo(Article::class);
+                break;
+            case self::TYPE_ARTICLE:
+                return $this->hasMany(Article::class);
+                break;
+            case self::TYPE_ADVERT:
+                return $this->hasMany(Advert::class);
+                break;
+            default:
+                return null;
+        }
+    }
+
+    public function childrens()
+    {
+        return $this->hasMany(self::class, 'parent_id');
+    }
+
+    public function parent()
+    {
+        return $this->hasOne(self::class, 'id', 'parent_id');
+    }
+
+    public function article()
+    {
+        return $this->belongsTo(Article::class);
+    }
+
+    /**
+     * Notes: 获取当前分类及子分类ID
+     * @Author: <C.Jason>
+     * @Date  : 2020/4/6 3:12 下午
+     * @return array
+     */
+    public function getAllChildrenId()
+    {
+        $ids = array_keys($this->buildSelectOptions([], $this->id));
+        array_unshift($ids, $this->id);
+
+        return $ids;
+    }
+
+    //查找顶级分类
+    public function getTop()
+    {
+        $parent = $this;
+
+        while ($parent->parent_id != 0) {
+            $parent = $parent->parent;
+        }
+
+        return $parent;
+    }
+
+}

app/Models/DedeAddonarticle.php

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+<?php
+
+namespace App\Models;
+
+class DedeAddonarticle extends Model
+{
+}

app/Models/DedeArchive.php

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+<?php
+
+namespace App\Models;
+
+class DedeArchive extends Model
+{
+    public function info()
+    {
+        return $this->hasOne(DedeAddonarticle::class, 'aid');
+    }
+}

app/Models/DedeArctype.php

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+<?php
+
+namespace App\Models;
+
+use Encore\Admin\Traits\AdminBuilder;
+use Encore\Admin\Traits\ModelTree;
+
+class DedeArctype extends Model
+{
+    use AdminBuilder, ModelTree;
+}

app/Models/Link.php

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+<?php
+
+namespace App\Models;
+
+class Link extends Model
+{
+    //
+}

app/Models/Model.php

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+<?php
+namespace App\Models;
+
+use DateTimeInterface;
+use Illuminate\Database\Eloquent\Model as Eloquent;
+
+class Model extends Eloquent
+{
+    protected $guarded = [];
+
+    /**
+     * 为数组 / JSON 序列化准备日期。
+     *
+     * @param  \DateTimeInterface  $date
+     * @return string
+     */
+    protected function serializeDate(DateTimeInterface $date)
+    {
+        return $date->format($this->dateFormat ?: 'Y-m-d H:i:s');
+    }
+
+}

app/Models/Traits/BelongsToCategory.php

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+<?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

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+<?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 '';
+        }
+    }
+
+}