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[Doug Fish <drfish@xxxxxxxxxx>]

The UI is relying on a call to heat to parse and validate the template file
https://github.com/openstack/horizon/blob/master/openstack_dashboard/dashboards/project/stacks/forms.py#L147

which maps through some additonal UI abstraction and python-heatclient to be the same call as
heat template-validate -f template.txt -e env.txt

which returns
{
  "Description": "create a network",
  "Parameters": {
    "net_name": {
      "Default": "defaultnet",
      "Type": "String",
      "NoEcho": "false",
      "Description": "Name of private network to be created",
      "Label": "net_name"
    }
  }
}

This seems like a bug in Heat to me.  The -e parameter is ignored when
validating the template.

Thoughts from the heat team?

** Also affects: heat
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1388985

Title:
  Launch Stack doesn't apply parameters from environment file

Status in Orchestration API (Heat):
  New
Status in OpenStack Dashboard (Horizon):
  New

Bug description:
  I'm using an environment file to pass a parameter into a simple heat
  template and the parameter is not relfected in the Horizon UI nor the
  created resource.

  To recreate:
  Project->Orchestration->Stacks->Launch Stack
  Provde the template.txt and env.txt files I've attached.  I used the "File" source option.
  Click next.
  I'd expect to see the net_name as "betternetname" from the env file, but instead "defaultnet" is displayed.

  Continuing to launch, the network is named "defaultnet".

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