feat(privatedns): [120224824] Support unbind all VPCs bound to the current private dns zone (#2914)

* support unbind vpc

* support unbind vpc

Author: hellertang

.changelog/2914.txt

@@ -0,0 +1,3 @@
+```release-note:enhancement
+resource/tencentcloud_private_dns_zone: Support unbind all VPCs bound to the current private dns zone.
+```

tencentcloud/services/privatedns/resource_tc_private_dns_zone.go

@@ -165,13 +165,15 @@ func resourceTencentCloudDPrivateDnsZoneCreate(d *schema.ResourceData, meta inte
 	if v, ok := d.GetOk("vpc_set"); ok {
 		vpcSet := make([]*privatedns.VpcInfo, 0, 10)
 		for _, item := range v.([]interface{}) {
-			m := item.(map[string]interface{})
-			vpcInfo := privatedns.VpcInfo{
-				UniqVpcId: helper.String(m["uniq_vpc_id"].(string)),
-				Region:    helper.String(m["region"].(string)),
-			}
+			if item != nil {
+				m := item.(map[string]interface{})
+				vpcInfo := privatedns.VpcInfo{
+					UniqVpcId: helper.String(m["uniq_vpc_id"].(string)),
+					Region:    helper.String(m["region"].(string)),
+				}
 
-			vpcSet = append(vpcSet, &vpcInfo)
+				vpcSet = append(vpcSet, &vpcInfo)
+			}
 		}
 
 		request.VpcSet = vpcSet
@@ -371,12 +373,16 @@ func resourceTencentCloudDPrivateDnsZoneUpdate(d *schema.ResourceData, meta inte
 			var vpcSets = make([]*privatedns.VpcInfo, 0)
 			items := v.([]interface{})
 			for _, item := range items {
-				value := item.(map[string]interface{})
-				vpcInfo := &privatedns.VpcInfo{
-					UniqVpcId: helper.String(value["uniq_vpc_id"].(string)),
-					Region:    helper.String(value["region"].(string)),
+				if item != nil {
+					value := item.(map[string]interface{})
+					if value["uniq_vpc_id"].(string) != "" && value["region"].(string) != "" {
+						vpcInfo := &privatedns.VpcInfo{
+							UniqVpcId: helper.String(value["uniq_vpc_id"].(string)),
+							Region:    helper.String(value["region"].(string)),
+						}
+						vpcSets = append(vpcSets, vpcInfo)
+					}
 				}
-				vpcSets = append(vpcSets, vpcInfo)
 			}
 			request.VpcSet = vpcSets
 		}

tencentcloud/services/privatedns/resource_tc_private_dns_zone.md

@@ -1,5 +1,7 @@
 Provide a resource to create a Private Dns Zone.
 
+~> **NOTE:** If you want to unbind all VPCs bound to the current private dns zone, simply clearing the declaration will not take effect; you need to set the `region` and `uniq_vpc_id` in `vpc_set` to an empty string.
+
 Example Usage
 
 Create a basic Private Dns Zone

tencentcloud/services/tke/resource_tc_kubernetes_scale_worker.go

@@ -11,6 +11,8 @@ description: |-
 
 Provide a resource to create a Private Dns Zone.
 
+~> **NOTE:** If you want to unbind all VPCs bound to the current private dns zone, simply clearing the declaration will not take effect; you need to set the `region` and `uniq_vpc_id` in `vpc_set` to an empty string.
+
 ## Example Usage
 
 ### Create a basic Private Dns Zone