dynamically assign environment variable upon if condition on another variable

Question

If the variable ENVIRONMENT is either dev or qa then I wish to have a new environment variable FINALENV set to nonprod else to prod

Below is my workflow file from a develop [non-master] branch

I face 2 problems with my workflow.

1. I do not get the Run Workflow button to trigger the workflow manually.
2. I expected FINALENV to print as non-prod as the if condition was met however it prints blank.

I'm new to github workflows. Kindly suggest.

---

name: CICD-RECYCLE

on:
  push:
    branches:
      - "*"

  pull_request:
    branches:
      - "*"

  workflow_dispatch:

    inputs:

      ENVIRONMENT:
        type: choice
        options:
          - dev
          - qa
          - perf
          - uat
          - prod

jobs:

  SETVARS:
    runs-on: self-hosted

    steps:
 
      - name: Print environment variable
        run: |
          echo "ENV is ${{ env.ENVIRONMENT }} only."         

    
      - name: Set environment variable for nonprod ENV
        run: |
          echo "FINALENV=nonprod"  >> $GITHUB_ENV
        if: ${{env.ENVIRONMENT == 'dev' || env.ENVIRONMENT == 'qa'}}

      - name: Set environment variable for prod ENV
        run: |
          echo "FINALENV=prod"  >> $GITHUB_ENV
        if:  ${{env.ENVIRONMENT != 'dev' || env.ENVIRONMENT != 'qa'}}

      - name: Print environment variable for ENV
        run: |
          echo "FINALENV is ${{ env.FINALENV }} only."       

Answer 1

With Windows runner, you're using Bash syntax throughout in your run sections but the default shell on Windows runner is pwsh. It should be shell: bash if that is intended.

See jobs.<job_id>.steps[*].shell for more details.

---

Wherever you use env.ENVIRONMENT, it should be inputs.ENVIRONMENT.

Also, from the job name i.e. SETVARS, it seems like you're using it to set env vars only and most probably want to use these in your next jobs. That won't work as each job runs in a different runner. So, you need to change your strategy here.

Your current workflow may be simplified to this:

name: CICD-RECYCLE

on:
  push:
  pull_request:
  workflow_dispatch:
    inputs:
      ENVIRONMENT:
        type: choice
        options:
          - dev
          - qa
          - perf
          - uat
          - prod

jobs:
  SETVARS:
    runs-on: '1561'
    
    defaults:
      run:
        shell: bash

    steps:
      - name: Set FINALENV
        env:
          FINALENV: ${{ (inputs.ENVIRONMENT == 'dev' || inputs.ENVIRONMENT == 'qa') && 'nonprod' || 'prod' }}
        run: echo "FINALENV=$FINALENV" >> "$GITHUB_ENV"

      - name: Print FINALENV
        run: echo "FINALENV is $FINALENV."

Depending on your use case, you might need to perform above steps only if it's a workflow_dispatch event:

if: ${{ github.event_name == 'workflow_dispatch' }}