we have below resource creation and I need to control only the creating of this orahome resource based on `var.azure_db_server_create_orahome_disk` when its false it should not create and when true it should create.
```hcl
resource "azurerm_managed_disk" "dbhome" {
      count                = var.azure_db_server_create_orahome_disk ? 1 : 0
      name                 = "${local.db_server_name}-orahome-0"
      location             = data.azurerm_resource_group.rg.location
      resource_group_name  = data.azurerm_resource_group.rg.name
      storage_account_type = "Premium_LRS"
      create_option        = "Empty"
      disk_size_gb         = var.dbdisksize_dbhome
      zones                = local.availability_zone
    }

resource "azurerm_virtual_machine" "oracle19c" {
      name                             = local.db_server_name
      location                         = azurerm_network_interface.nic.location
      resource_group_name              = data.azurerm_resource_group.rg.name
      network_interface_ids            = [azurerm_network_interface.nic.id]
      vm_size                          = contains(var.vm_nonsupported_regions, var.region) ? var.dbvmsize_fallback : var.dbvmsize
      delete_os_disk_on_termination    = true
      delete_data_disks_on_termination = true
      
      storage_data_disk {
        count           = var.azure_db_server_create_orahome_disk ? 1 : 0
        name            = "${local.db_server_name}-orahome-0"
        caching         = "ReadOnly"
        managed_disk_id = azurerm_managed_disk.dbhome.id
        create_option   = "Attach"
        lun             = 1
        disk_size_gb    = var.dbdisksize_dbhome
      }
    }

<details>
<summary>英文:</summary>
we have below resource creation and I need to control only the creating of this orahome resource based on `var.azure_db_server_create_orahome_disk` when its false it should not create and when true it should create.

So by adding the line `count = var.azure_db_server_create_orahome_disk ? 1 : 0` its hapenning properly and fine.Please correct if this method also not correct.
Problem is, while VM creation its still trying to attached that disk and find a managed_disk_id even I put `count = var.azure_db_server_create_orahome_disk ? 1 : 0` on it. I need to fully ignore that disk creation and attachment and continue but other disk should proceed as same as earlier.

  storage_data_disk {
    count           = var.azure_db_server_create_orahome_disk ? 1 : 0
    name            = "${local.db_server_name}-orahome-0"
    caching         = "ReadOnly"
    managed_disk_id = azurerm_managed_disk.dbhome.id
    create_option   = "Attach"
    lun             = 1
    disk_size_gb    = var.dbdisksize_dbhome
  }
}`

I added `count = var.azure_db_server_create_orahome_disk ? 1 : 0` in azurerm_managed_disk creation and also attachment of that disk. but no luck with the main requirment
</details>
# 答案1
**得分**: 0
问题已通过创建动态的 "storage_data_disk" {} 并在其中使用 for_each 解决。
<details>
<summary>英文:</summary>
Issue has been resloved by making dynamic &quot;storage_data_disk&quot; {} and also with for_each inside that.
</details>
# 答案2
**得分**: 0
需要控制只有在`var.azure_db_server_create_orahome_disk`为`true`时才创建`orahome`资源，当它为`false`时不应创建。通过使用`for_each`，我们可以解决相同的问题。
下面是用于创建具有托管数据磁盘的Azure VM 的代码示例：
```hcl
provider "azurerm" {
  features {}
}
variable "azure_db_server_create_orahome_disk" {
  type    = bool
  default = true
}
variable "dbdisksize_dbhome" {
  type    = number
  default = 128
}
variable "dbvmsize" {
  type    = string
  default = "Standard_DS2_v2"
}
variable "dbvmsize_fallback" {
  type    = string
  default = "Standard_DS1_v2"
}
locals {
  db_server_name   = "my-db-server"
  availability_zone = ["1"]
}
resource "azurerm_resource_group" "example" {
  name     = "vm-resources"
  location = "East US"
}
resource "azurerm_virtual_network" "main" {
  name                = "vm-network"
  address_space       = ["10.0.0.0/16"]
  location            = azurerm_resource_group.example.location
  resource_group_name = azurerm_resource_group.example.name
  depends_on          = [azurerm_resource_group.example]
}
resource "azurerm_subnet" "internal" {
  name                 = "internal"
  resource_group_name  = azurerm_resource_group.example.name
  virtual_network_name = azurerm_virtual_network.main.name
  address_prefixes     = ["10.0.2.0/24"]
  depends_on           = [azurerm_virtual_network.main]
}
resource "azurerm_network_interface" "main" {
  name                = "vm-nic"
  location            = azurerm_resource_group.example.location
  resource_group_name = azurerm_resource_group.example.name
  ip_configuration {
    name                          = "testconfiguration1"
    subnet_id                     = azurerm_subnet.internal.id
    private_ip_address_allocation = "Dynamic"
  }
  depends_on = [azurerm_subnet.internal]
}
resource "azurerm_managed_disk" "dbhome" {
  count                = var.azure_db_server_create_orahome_disk ? 1 : 0
  name                 = "${local.db_server_name}-orahome-0"
  location             = azurerm_resource_group.example.location
  resource_group_name  = azurerm_resource_group.example.name
  storage_account_type = "Premium_LRS"
  create_option        = "Empty"
  disk_size_gb         = var.dbdisksize_dbhome
  depends_on           = [azurerm_network_interface.main]
}
resource "azurerm_virtual_machine" "oracle19c" {
  name                             = "venkatvm1"
  location                         = azurerm_resource_group.example.location
  resource_group_name              = azurerm_resource_group.example.name
  network_interface_ids            = [azurerm_network_interface.main.id]
  vm_size                          = "Standard_D8s_v3"
  delete_os_disk_on_termination    = true
  delete_data_disks_on_termination = true
  storage_os_disk {
    name              = "vm-os-disk"
    caching           = "ReadWrite"
    managed_disk_type = "Standard_LRS"
    create_option     = "FromImage"
    disk_size_gb      = 64
  }
  storage_image_reference {
    publisher = "SUSE"
    offer     = "sles-sap-12-sp5"
    sku       = "gen1"
    version   = "latest"
  }
  dynamic "storage_data_disk" {
    for_each = azurerm_managed_disk.dbhome
    content {
      name              = "${local.db_server_name}-orahome-0"
      caching           = "None"
      managed_disk_id   = try(storage_data_disk.value.id, null)
      create_option     = "Attach"
      lun               = 1
      disk_size_gb      = var.dbdisksize_dbhome
    }
  }
  os_profile {
    computer_name  = "venakt-vm"
    admin_username = "Admin"
    admin_password = "Pa$$word@123$"
  }
  os_profile_linux_config {
    disable_password_authentication = false
  }
}