debian-mirror-gitlab/app/finders/user_finder.rb

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# frozen_string_literal: true
# A simple finding for obtaining a single User.
#
# While using `User.find_by` directly is straightforward, it can lead to a lot
# of code duplication. Sometimes we just want to find a user by an ID, other
# times we may want to exclude blocked user. By using this finder (and extending
# it whenever necessary) we can keep this logic in one place.
class UserFinder
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def initialize(username_or_id)
@username_or_id = username_or_id
end
# Tries to find a User by id, returning nil if none could be found.
def find_by_id
User.find_by_id(@username_or_id)
end
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# Tries to find a User by id, raising a `ActiveRecord::RecordNotFound` if it could
# not be found.
def find_by_id!
User.find(@username_or_id)
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end
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# Tries to find a User by username, returning nil if none could be found.
def find_by_username
User.find_by_username(@username_or_id)
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end
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# Tries to find a User by username, raising a `ActiveRecord::RecordNotFound` if it could
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# not be found.
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def find_by_username!
User.find_by_username!(@username_or_id)
end
# Tries to find a User by username or id, returning nil if none could be found.
def find_by_id_or_username
if input_is_id?
find_by_id
else
find_by_username
end
end
# Tries to find a User by username or id, raising a `ActiveRecord::RecordNotFound` if it could
# not be found.
def find_by_id_or_username!
if input_is_id?
find_by_id!
else
find_by_username!
end
end
def input_is_id?
@username_or_id.is_a?(Numeric) || @username_or_id =~ /^\d+$/
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end
end