feat: 开放API文章相关

app/openapi/model/ArticleModel.php

@@ -0,0 +1,40 @@
+<?php
+declare (strict_types = 1);
+
+namespace app\openapi\model;
+
+use app\common\model\ArticleBaseModel;
+use think\facade\Db;
+
+/**
+ * 文章模型
+ * @mixin \think\Model
+ */
+class ArticleModel extends ArticleBaseModel
+{
+    // 关联分类
+    public function category()
+    {
+        return $this->belongsTo(ArticleCategoryModel::class, 'category_id', 'id');
+    }
+
+    // 所属语言范围查询
+    public function scopeLanguage($query, $language = 'zh-cn')
+    {
+        $query->whereExists(function($subquery) use($language) {
+            $lang_model = new LanguageModel;
+            $subquery->model($lang_model)
+                ->name($lang_model->getName())
+                ->field(['id'])
+                ->where('id', '=', Db::raw($this->getTable() . '.language_id'))
+                ->where('code', '=', $language);
+        });
+    }
+
+    // 所属分类范围查询
+    public function scopeCategoryId($query, $category_id)
+    {
+        if (is_null($category_id)) return;
+        $query->where('category_id', '=', $category_id);
+    }
+}