add server to monorepo.

packages/server/src/models/ModelSetting.ts

@@ -0,0 +1,56 @@
+import { get } from 'lodash';
+import { IModelMeta, IModelMetaField, IModelMetaDefaultSort } from '@/interfaces';
+
+export default (Model) =>
+  class ModelSettings extends Model {
+    /**
+     *
+     */
+    static get meta(): IModelMeta {
+      throw new Error('');
+    }
+
+    /**
+     * Retrieve specific model field meta of the given field key.
+     * @param {string} key
+     * @returns {IModelMetaField}
+     */
+    public static getField(key: string, attribute?:string): IModelMetaField {
+      const field = get(this.meta.fields, key);
+
+      return attribute ? get(field, attribute) : field;
+    }
+
+    /**
+     * Retrieve  the specific model meta.
+     * @param {string} key
+     * @returns
+     */
+    public static getMeta(key?: string) {
+      return key ? get(this.meta, key): this.meta; 
+    }
+
+    /**
+     * Retrieve the model meta fields.
+     * @return {{ [key: string]: IModelMetaField }}
+     */
+    public static get fields(): { [key: string]: IModelMetaField } {
+      return this.getMeta('fields');
+    }
+
+    /**
+     * Retrieve the model default sort settings.
+     * @return {IModelMetaDefaultSort}
+     */
+    public static get defaultSort(): IModelMetaDefaultSort {
+      return this.getMeta('defaultSort');
+    }
+
+    /**
+     * Retrieve the default filter field key.
+     * @return {string}
+     */
+    public static get defaultFilterField(): string {
+      return this.getMeta('defaultFilterField');
+    }
+  };