第一次提交

common/model/Region.js

@@ -0,0 +1,57 @@
+import * as Api from '@/api/region'
+import storage from '@/utils/storage'
+
+const REGION_TREE = 'region_tree'
+
+/**
+ * 商品分类 model类
+ * RegionModel
+ */
+export default {
+
+  // 从服务端获取全部地区数据(树状)
+  getTreeDataFromApi () {
+    return new Promise((resolve, reject) => {
+      Api.tree().then(result => resolve(result.data.list))
+    })
+  },
+
+  // 获取所有地区(树状)
+  getTreeData () {
+    return new Promise((resolve, reject) => {
+      // 判断缓存中是否存在
+      const data = storage.get(REGION_TREE)
+      // 从服务端获取全部地区数据
+      if (data) {
+        resolve(data)
+      } else {
+        this.getTreeDataFromApi().then(list => {
+          // 缓存24小时
+          storage.set(REGION_TREE, list, 24 * 60 * 60)
+          resolve(list)
+        })
+      }
+    })
+  },
+
+  // 获取所有地区的总数
+  getCitysCount () {
+    return new Promise((resolve, reject) => {
+      // 获取所有地区(树状)
+      this.getTreeData().then(data => {
+        const cityIds = []
+        // 遍历省份
+        for (const pidx in data) {
+          const province = data[pidx]
+          // 遍历城市
+          for (const cidx in province.city) {
+            const cityItem = province.city[cidx]
+            cityIds.push(cityItem.id)
+          }
+        }
+        resolve(cityIds.length)
+      })
+    })
+  }
+
+}