<commit_before>class User < ActiveRecord::Base
  has_secure_password
  validates :username
  validates :email, :uniqueness => true

  has_many :friendships, :foreign_key => 'friendee'
  has_many :friendships, :foreign_key => 'friend'
end<commit_msg>Set username validation to include presence.<commit_after>class User < ActiveRecord::Base
  has_secure_password
  validates :username, :presence => true
  validates :email, :uniqueness => true

  has_many :friendships, :foreign_key => 'friendee'
  has_many :friendships, :foreign_key => 'friend'
end
{'fraction_non_alphanumeric': 0.10401459854014598, 'fraction_numerical': 0.0, 'mean_word_length': 6.223684210526316, 'pattern_counts': {'":': 0, '<': 5, '<?xml version=': 0, '>': 10, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '4580870', 'n_tokens_mistral': 174, 'n_tokens_neox': 167, 'n_words': 44}