Specifing git branch via a parameter

[MDKF]

Hi All,

 I have a pipeline that starts out like this:

pipeline {

 agent any

 parameters {

        string(defaultValue: 'develop', description: 'branch', name: 'Branch')

    }

 stages {

  stage('Checkout') {

   steps {

    checkout([$class: 'GitSCM', branches: [

     [name: 'refs/remotes/origin/${params.Branch}']

When the project it runs because the parameter isn't being inserted.:

> C:\Program Files (x86)\Git\cmd\git.exe rev-parse "refs/remotes/origin/${params.Branch}^{commit}" # timeout=10
> C:\Program Files (x86)\Git\cmd\git.exe rev-parse "refs/remotes/origin/refs/remotes/origin/${params.Branch}^{commit}" # timeout=10 

> C:\Program Files (x86)\Git\cmd\git.exe rev-parse "refs/remotes/origin/${params.Branch}^{commit}" # timeout=10 

What am I doing wrong? Thanks,

-Michael

[Mark Waite]

On Thursday, August 9, 2018 at 4:45:07 PM UTC-6, MDKF wrote:

Hi All,

 I have a pipeline that starts out like this:

pipeline {

 agent any

 parameters {

        string(defaultValue: 'develop', description: 'branch', name: 'Branch')

    }

 stages {

  stage('Checkout') {

   steps {

    checkout([$class: 'GitSCM', branches: [

     [name: 'refs/remotes/origin/${params.Branch}']

String expansion in groovy happens inside a double-quoted string and does not happen inside a single-quoted string.  Change to a double-quoted string.  You may also prefer the simpler form of: 

[name: params.Branch]

Mark Waite