商家红包活动

@@ -15,19 +15,11 @@ Component({
   data: {
     checkedNum:0,
     display:false,
+    checkoutObj:null,
   },
   observers: {
     'checkout': function(checkout) {
-      if(!checkout) return;
-      let num=0;
-      checkout.discount.forEach(q=>{
-        if(q.checked){
-          num++;
-        }
-      })
-      this.setData({
-        checkedNum:num,
-      })
+      this.discountFormat(checkout)
     }
   },
   /**
@@ -44,27 +36,36 @@ Component({
         display:false,
       })
     },
+    discountFormat(checkout){
+      if(!checkout) return;
+      let num=0;
+      let disObj={}
+      let subsidy_price=0;
+      checkout.discount.forEach(q=>{
+        checkout.disabled=false
+        if(q.checked){
+          num++;
+          disObj[q.owner+'-'+q.receive_condition]=true
+          subsidy_price+=q.price/1
+        }
+      })
+      checkout.discount.forEach(q=>{
+        if(!q.checked && disObj[q.owner+'-'+q.receive_condition]){
+          checkout.disabled=true
+        }
+      })
+      checkout.subsidy_price=subsidy_price
+      this.setData({
+        checkedNum:num,
+        checkoutObj:checkout
+      })
+    },
     discountChecked(e){
       console.log('discountChecked',e)
       let index=util.attr(e,'index')
-      let discount=this.data.checkout.discount
-      let checked=discount[index].checked
-      discount[index].checked=!discount[index].checked
-      if(checked) {
-        let subsidy_price=(this.data.checkout.subsidy_price/1 - discount[index].price/1).toFixed(2)
-        this.setData({
-          [`checkout.subsidy_price`]: subsidy_price,
-          [`checkout.discount`]: discount,
-          checkedNum:this.data.checkedNum-1,
-        })
-      }else{
-        let subsidy_price=(this.data.checkout.subsidy_price/1 + discount[index].price/1).toFixed(2)
-        this.setData({
-          [`checkout.subsidy_price`]: subsidy_price,
-          [`checkout.discount`]: discount,
-          checkedNum:this.data.checkedNum+1,
-        })
-      }
+      let checkout=this.data.checkout
+      checkout.discount[index].checked=!checkout.discount[index].checked
+      this.discountFormat(checkout)
     },
   }
 })

@@ -9,10 +9,10 @@
         <view class="tips">红包均为一次使用，不找零、不兑现，每次买单抵扣不超过消费总额</view>
         <view class="content">
             <view class="msg flex-ll">
-                你选中了<text class="light">{{checkedNum}}</text>个红包，共可抵扣<text class="light">￥{{checkout.subsidy_price}}</text>
+                你选中了<text class="light">{{checkedNum}}</text>个红包，共可抵扣<text class="light">￥{{checkoutObj.subsidy_price}}</text>
             </view>
             <view class="list">
-                <view class="quan" wx:for="{{checkout.discount}}" wx:key="discount">
+                <view class="quan" wx:for="{{checkoutObj.discount}}" wx:key="discount">
                     <quan quan="{{item}}">
                         <radio data-index="{{index}}" checked="{{item.checked}}" color="#F05522" bindtap="discountChecked"/>
                     </quan>

@@ -78,6 +78,15 @@ Page({
           this.GetOrderInfoRun()
         }
       }
+      if(checkout.discount.length>0){
+        let subsidy_price=0
+        checkout.discount.forEach(q=>{
+          if(q.checked){
+            subsidy_price+=q.price/1
+          }
+        })
+        checkout.subsidy_price=subsidy_price.toFixed(2)
+      }
       this.setData({
         checkout:checkout,
         hasLoading:false,