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# == Schema Information
#
# Table name: labels
#
# id :integer not null, primary key
# title :string(255)
# color :string(255)
# project_id :integer
# created_at :datetime
# updated_at :datetime
#
class Label < ActiveRecord::Base
include Referable
DEFAULT_COLOR = '#428BCA'
default_value_for :color, DEFAULT_COLOR
belongs_to :project
has_many :label_links, dependent: :destroy
has_many :issues, through: :label_links, source: :target, source_type: 'Issue'
validates :color,
format: { with: /\A#[0-9A-Fa-f]{6}\Z/ },
allow_blank: false
validates :project, presence: true
# Don't allow '?', '&', and ',' for label titles
validates :title,
presence: true,
format: { with: /\A[^&\?,]+\z/ },
uniqueness: { scope: :project_id }
default_scope { order(title: :asc) }
alias_attribute :name, :title
def self.reference_prefix
'~'
end
# Pattern used to extract label references from text
#
# TODO (rspeicher): Limit to double quotes (meh) or disallow single quotes in label names (bad).
def self.reference_pattern
%r{
#{reference_prefix}
(?:
(?<label_id>\d+) | # Integer-based label ID, or
(?<label_name>
[A-Za-z0-9_-]+ | # String-based single-word label title
['"][^&\?,]+['"] # String-based multi-word label surrounded in quotes
)
)
}x
end
# Returns the String necessary to reference this Label in Markdown
#
# format - Symbol format to use (default: :id, optional: :name)
#
# Note that its argument differs from other objects implementing Referable. If
# a non-Symbol argument is given (such as a Project), it will default to :id.
#
# Examples:
#
# Label.first.to_reference # => "~1"
# Label.first.to_reference(:name) # => "~\"bug\""
#
# Returns a String
def to_reference(format = :id)
if format == :name
%(#{self.class.reference_prefix}"#{name}")
else
"#{self.class.reference_prefix}#{id}"
end
end
def open_issues_count
issues.opened.count
end
end
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