`components_enabled': undefined method `map' for nil:NilClass (NoMethodError)

[eightseventhreethree]

Bug description

Fails to run.

Reproduction steps

Steps to reproduce the behavior:

1. Installed using sudo gem install panda-motd
2. ran: sudo panda-motd
3. Got the error below.

rush@rush-Latitude-E6540:~/ruby_projects/panda-motd$ sudo gem install panda-motd
[sudo] password for rush: 
Fetching: colorize-0.8.1.gem (100%)
Successfully installed colorize-0.8.1
Fetching: require_all-2.0.0.gem (100%)
Successfully installed require_all-2.0.0
Fetching: ruby-units-2.3.0.gem (100%)
Successfully installed ruby-units-2.3.0
Fetching: drydock-0.6.9.gem (100%)
Successfully installed drydock-0.6.9
Fetching: storable-0.8.9.gem (100%)
Successfully installed storable-0.8.9
Fetching: sysinfo-0.8.1.gem (100%)
Successfully installed sysinfo-0.8.1
Fetching: panda-motd-0.0.4.gem (100%)
Successfully installed panda-motd-0.0.4
Parsing documentation for colorize-0.8.1
Installing ri documentation for colorize-0.8.1
Parsing documentation for require_all-2.0.0
Installing ri documentation for require_all-2.0.0
Parsing documentation for ruby-units-2.3.0
Installing ri documentation for ruby-units-2.3.0
Parsing documentation for drydock-0.6.9
Installing ri documentation for drydock-0.6.9
Parsing documentation for storable-0.8.9
Installing ri documentation for storable-0.8.9
Parsing documentation for sysinfo-0.8.1
Installing ri documentation for sysinfo-0.8.1
Parsing documentation for panda-motd-0.0.4
Installing ri documentation for panda-motd-0.0.4
Done installing documentation for colorize, require_all, ruby-units, drydock, storable, sysinfo, panda-motd after 0 seconds
7 gems installed

rush@rush-Latitude-E6540:~/ruby_projects/panda-motd$ sudo panda-motd
Traceback (most recent call last):
	6: from /usr/local/bin/panda-motd:23:in `<main>'
	5: from /usr/local/bin/panda-motd:23:in `load'
	4: from /var/lib/gems/2.5.0/gems/panda-motd-0.0.4/bin/panda-motd:5:in `<top (required)>'
	3: from /var/lib/gems/2.5.0/gems/panda-motd-0.0.4/lib/panda_motd.rb:6:in `new_motd'
	2: from /var/lib/gems/2.5.0/gems/panda-motd-0.0.4/lib/panda_motd.rb:6:in `new'
	1: from /var/lib/gems/2.5.0/gems/panda-motd-0.0.4/lib/panda_motd/motd.rb:8:in `initialize'
/var/lib/gems/2.5.0/gems/panda-motd-0.0.4/lib/panda_motd/config.rb:13:in `components_enabled': undefined method `map' for nil:NilClass (NoMethodError)

Expected behavior

Expected the application to create the config file and run.

Screenshots

OS Information

• OS: 18.04 Ubuntu Budgie LTS

[taylorthurlow]

Hi, I think this is because I haven't pushed a small fix yet. It crashed because you haven't enabled any components yet. Check out ~/.config/panda-motd.yaml and enable one of the components. It should work then.

[eightseventhreethree]

I enabled a couple of them. Here is what I have. Let me know if I'm missing something. Thanks again for quick reply.

# The components section contains an ordered list of components you wish to
# print in the MOTD. They will be printed in the order they are defined in
# this file. Duplicate components will override previous definitions. Every
# component has an "enabled" setting which will turn the component on or off.

components:
  #####
  # ASCII Text Art
  #   Generates ASCII pictures of strings. Currently only shows the hostname.
  #
  # Settings
  #   font: The figlet font to render the text with. All supported fonts
  #     can be found at http://www.figlet.org/fontdb.cgi
  #   color: The color of the resulting text art. Supports the standard base-8
  #     colors: black, red, green, yellow, blue, magenta, cyan, and white. You
  #     can also use 'default' for your default terminal color. Additionally,
  #     you can prefix any of the base colors with 'light_' to get the lighter
  #     version.
  #####

   ascii_text_art:
     enabled: true
     font: slant
     color: red

  #####
  # Service Status
  #   Displays the current state of services running on the system. Currently
  #   only supports systemd.
  #
  # Settings
  #   services: Pairs following the format "service_name: Pretty Name". The
  #     service_name is the name of the systemd service to look for, NOT
  #     including the '.service' suffix. The pretty name is the name that is
  #     used in the MOTD to represent that service.
  #####

  # service_status:
  #   enabled: true
  #   services:
  #     chunkwm: chunkwm
  #     ssh: skhd
  #     elasticsearch@5.6: elasticsearch
  #     mysql: MySQL

  #####
  # Uptime
  #   Displays the current uptime of the machine.
  #
  # Settings
  #   prefix: The text to prepend to the uptime string.
  #####

   uptime:
     enabled: true
     prefix: up

  #####
  # SSL Certificates
  #   Displays the validity and expiration dates of SSL certificates.
  #
  # Settings
  #   certs: Pairs following the format "PrettyName: absolute_cert_file_path".
  #     The absolute_cert_file_path is the absolute file path of the SSL
  #     certificate. The pretty name is the name that is used in the MOTD to
  #     represent that certificate, typically a domain name.
  #####

  # ssl_certificates:
  #   enabled: true
  #   certs:
  #     taylorjthurlow.com: /etc/letsencrypt/live/taylorjthurlow.com/cert.pem

  #####
  # Filesystems
  #   Displays filesystem usage information.
  #
  # Settings
  #   filesystems: Pairs following the format "filesystem_name: Pretty Name".
  #     The filesystem_name is the name of the filesystem listed when using the
  #     `df` command line tool. The pretty name is the name that is used in the
  #     MOTD to represent that filesystem.
  #####

  # filesystems:
  #   enabled: true
  #   filesystems:
  #     /dev/sda1: Ubuntu
  #     /dev/sdc1: Data


  #####
  # Last Login
  #   Displays previous login information for users.
  #
  # Settings
  #   users: A list of user names which you are interested in receiving login
  #     information about. The key is the username, and the value is the number
  #     of recent logins you'd like to display.
  #####

   last_login:
     enabled: true
     users:
       rush: 1
  #     stoyan: 1

[taylorthurlow]

That should do it. Make sure you have consistent indents - I think each component definition has one extra space. Two spaces for indents.

[taylorthurlow]

Also, this is fixed in 86cb667. Will release a new version to fix this ASAP.

EDIT: Going to leave this open for the time being.

EDIT: Just pushed 0.0.5 which includes this fix. A sudo gem update panda-motd should fix this issue.