Commenting on an issue when a label is added

Introduction

This tutorial demonstrates how to use the GitHub CLI to comment on an issue when a specific label is applied. For example, when the help wanted label is added to an issue, you can add a comment to encourage contributors to work on the issue. For more information about GitHub CLI, see Using GitHub CLI in workflows.

In the tutorial, you will first make a workflow file that uses the gh issue comment command to comment on an issue. Then, you will customize the workflow to suit your needs.

Creating the workflow

1. 选择要应用此项目管理工作流程的仓库。 您可以使用您有写入权限的现有仓库，或者创建一个新的仓库。 有关创建仓库的详细信息，请参阅 创建新仓库。

2. 在存储库中，创建一个名为 .github/workflows/YOUR_WORKFLOW.yml 的文件，将 YOUR_WORKFLOW 替换为你选择的名称。 这是一个工作流程文件。 有关在 GitHub 上创建新文件的详细信息，请参阅 创建新文件。

3. Copy the following YAML contents into your workflow file.

   YAML

   name: Add comment
   on:
     issues:
       types:
         - labeled
   jobs:
     add-comment:
       if: github.event.label.name == 'help wanted'
       runs-on: ubuntu-latest
       permissions:
         issues: write
       steps:
         - name: Add comment
           run: gh issue comment "$NUMBER" --body "$BODY"
           env:
             GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
             GH_REPO: ${{ github.repository }}
             NUMBER: ${{ github.event.issue.number }}
             BODY: >
               This issue is available for anyone to work on.
               **Make sure to reference this issue in your pull request.**
               :sparkles: Thank you for your contribution! :sparkles:
   

4. Customize the parameters in your workflow file:

   • Replace help wanted in if: github.event.label.name == 'help wanted' with the label that you want to act on. If you want to act on more than one label, separate the conditions with ||. For example, if: github.event.label.name == 'bug' || github.event.label.name == 'fix me' will comment whenever the bug or fix me labels are added to an issue.
   • Change the value for BODY to the comment that you want to add. GitHub flavored markdown is supported. For more information about markdown, see 基本撰写和格式语法.

5. 将工作流程文件提交到仓库的默认分支。 有关详细信息，请参阅“创建新文件”。

Testing the workflow

Every time an issue in your repository is labeled, this workflow will run. If the label that was added is one of the labels that you specified in your workflow file, the gh issue comment command will add the comment that you specified to the issue.

Test your workflow by applying your specified label to an issue.

1. Open an issue in your repository. For more information, see 创建议题.
2. Label the issue with the specified label in your workflow file. For more information, see 管理标签.
3. To see the workflow run triggered by labeling the issue, view the history of your workflow runs. For more information, see Viewing workflow run history.
4. When the workflow completes, the issue that you labeled should have a comment added.

Next steps

• To learn more about additional things you can do with the GitHub CLI, like editing existing comments, visit the GitHub CLI Manual.