Discourse. Users, Groups, Categories

Notes about getting information about users, groups, categories etc. right after an initial installation

# All groups
Group.pluck(:name)

[
 "everyone",
 "trust_level_2",
 "trust_level_3",
 "trust_level_4",
 "admins",
 "staff",
 "moderators",
 "trust_level_0",
 "trust_level_1"
]

# Groups visibility
Group.visibility_levels
=> {:public=>0, :logged_on_users=>1, :members=>2, :staff=>3, :owners=>4}

# How much users in a group
Group.all.each_with_object({}) do |group, result|
  result[group.name] = group.users.count
end

{
 "everyone"=>0,
 "trust_level_2"=>2,
 "trust_level_3"=>2,
 "trust_level_4"=>2,
 "admins"=>3,
 "staff"=>3,
 "moderators"=>2,
 "trust_level_0"=>4,
 "trust_level_1"=>4
}

# How much users in the system
User.count

# Last user
User.last.email

=> "admin@test.com"

# User's groups
User.last.groups.pluck(:name)
=> ["trust_level_0", "trust_level_1"]

User.last.trust_level
=> 1 

User.last.admin?
=> false

User.last.moderator?
=> false

User.last.active?
=> true

User.last.suspended?
=> false

User.last.last_seen_at
=> Wed, 22 Jan 2025 12:57:39.190562000 UTC +00:00

# access to categories
categories = User.last.groups.map(&:categories).flatten.uniq
categories.map(&:name)
=> []

Trust Levels in Discourse:

• Trust Level 0 (New User):
  Newly registered. Limited actions (e.g., restricted links/images). Cannot send private messages.
• Trust Level 1 (Basic User):
  Access to basic features: create topics, send private messages, upload images and attachments.
• Trust Level 2 (Member):
  Active user. Can invite others to topics, ignore users, and mark topics as visited.
• Trust Level 3 (Regular):
  Highly active. Can edit topic titles, move topics between categories, and temporarily hide posts.
• Trust Level 4 (Leader):
  Highest trust level, manually assigned. Almost full moderation rights: edit any post, close/open topics.

Categories

Category.count
=> 4

Category.pluck(:name)
=> ["Site Feedback", "Uncategorized", "General", "Staff"]

Category.all.each do |category|
  puts "Category: #{category.name}, Topics: #{category.topic_count}"
end

Category: Site Feedback, Topics: 0
Category: Uncategorized, Topics: 0
Category: General, Topics: 1
Category: Staff, Topics: 2

Now I/You know about basic Models in Discourse.
Happy coding!