createCmd.go

// createCmd represents the create command
var createCmd = &cobra.Command{
	Use:   "create",
	Short: "Create a new blog post",
	Long: `Create a new blogpost on the server through gRPC. 
	
	A blog post requires an AuthorId, Title and Content.`,
	RunE: func(cmd *cobra.Command, args []string) error {
    // Get the data from our flags 
		author, err := cmd.Flags().GetString("author")
		title, err := cmd.Flags().GetString("title")
		content, err := cmd.Flags().GetString("content")
		if err != nil {
			return err
		}
    // Create a blog protobuffer message  
		blog := &blogpb.Blog{
			AuthorId: author,
			Title:    title,
			Content:  content,
		}
    // RPC call
		res, err := client.CreateBlog(
			context.TODO(),
      // wrap the blog message in a CreateBlog request message
			&blogpb.CreateBlogReq{
				Blog: blog,
			},
		)
		if err != nil {
			return err
		}
		fmt.Printf("Blog created: %s\n", res.Blog.Id)
		return nil
	},
}