pkgdown workflow fails to deploy gh pages - r

Question

I setup for my R package repository a pkgdown workflow.
The .github/workflows/pkgdown.yaml file:
on:
push:
branches: [main, master]
release:
types: [published]
workflow_dispatch:
name: pkgdown
jobs:
pkgdown:
runs-on: ubuntu-latest
env:
GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
steps:
- uses: actions/checkout#v2
- uses: r-lib/actions/setup-pandoc#v1
- uses: r-lib/actions/setup-r#v1
with:
use-public-rspm: true
- uses: r-lib/actions/setup-r-dependencies#v1
with:
extra-packages: pkgdown
needs: website
- name: Deploy package
if: contains(env.isPush, 'true')
run: |
git config --local user.email "actions#github.com"
git config --local user.name "GitHub Actions"
Rscript -e 'pkgdown::deploy_to_branch(new_process = FALSE)'
The pkgdown workflow works fine, but it fails to update the GitHub pages.
I setup the gh-pages branch as explained in the GitHub documentation, so the workflow pages-build-deployment is present, but when I push on main branch it doesn't run.

Answer 1

I realized the problem was in the if: contains(env.isPush, 'true') line. The condition is never true nor false, since there is no attribute isPush under env, hence the lines
run: |
git config --local user.email "actions#github.com"
git config --local user.name "GitHub Actions"
Rscript -e 'pkgdown::deploy_to_branch(new_process = FALSE)'
were never executed.
To solve the problem, either modify the env part:
env:
GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
isPush: ${{ github.event_name == 'push' }}
or remove the if condition before the run command.