Raised when connection to the database could not been established because it was not able to connect to the host or when the authorization failed.

Methods

Class Public methods

hostname_error(hostname)

📝 Source code 
# File activerecord/lib/active_record/errors.rb, line 107
def hostname_error(hostname)
  DatabaseConnectionError.new(<<~MSG)
    There is an issue connecting with your hostname: #{hostname}.\n
    Please check your database configuration and ensure there is a valid connection to your database.
  MSG
end
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new(message = nil)

📝 Source code 
# File activerecord/lib/active_record/errors.rb, line 102
def initialize(message = nil)
  super(message || "Database connection error")
end
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username_error(username)

📝 Source code 
# File activerecord/lib/active_record/errors.rb, line 114
def username_error(username)
  DatabaseConnectionError.new(<<~MSG)
    There is an issue connecting to your database with your username/password, username: #{username}.\n
    Please check your database configuration to ensure the username/password are valid.
  MSG
end
🔎 See on GitHub