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require 'tsort'
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# Add an empty method to nil. Now no need for if x and x.empty?. Just x.empty?
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class NilClass
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def empty?
|
|
true
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end
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|
end
|
|
|
|
class ActiveRecord::Base
|
|
def <=>(other)
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|
self.name <=> other.name
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end
|
|
|
|
def update_single_attribute(attribute, value)
|
|
connection.update(
|
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"UPDATE #{self.class.quoted_table_name} SET " +
|
|
"#{connection.quote_column_name(attribute.to_s)} = #{quote_value(value)} " +
|
|
"WHERE #{self.class.quoted_primary_key} = #{quote_value(id)}",
|
|
"#{self.class.name} Attribute Update"
|
|
)
|
|
end
|
|
|
|
def update_multiple_attribute(attributes)
|
|
connection.update(
|
|
"UPDATE #{self.class.quoted_table_name} SET " +
|
|
attributes.map{|key, value| " #{connection.quote_column_name(key.to_s)} = #{quote_value(value)} " }.join(', ') +
|
|
"WHERE #{self.class.quoted_primary_key} = #{quote_value(id)}",
|
|
"#{self.class.name} Attribute Update"
|
|
)
|
|
end
|
|
|
|
# ActiveRecord Callback class
|
|
class EnsureNotUsedBy
|
|
attr_reader :klasses, :logger
|
|
def initialize *attribute
|
|
@klasses = attribute
|
|
@logger = Rails.logger
|
|
end
|
|
|
|
def before_destroy(record)
|
|
klasses.each do |klass|
|
|
record.send(klass.to_sym).each do |what|
|
|
record.errors.add :base, _("%{record} is used by %{what}") % { :record => record, :what => what }
|
|
end
|
|
end
|
|
if record.errors.empty?
|
|
true
|
|
else
|
|
logger.error "You may not destroy #{record.to_label} as it is in use!"
|
|
false
|
|
end
|
|
end
|
|
end
|
|
|
|
class EnsureNoCycle
|
|
include TSort
|
|
|
|
def initialize(base, source, target)
|
|
@source = source; @target = target
|
|
@base = base.map { |record| [record.send(@source), record.send(@target)] }
|
|
@nodes = @base.flatten.uniq
|
|
@graph = Hash.new { |h, k| h[k] = [] }
|
|
@base.each { |s, t| @graph[s]<< t }
|
|
end
|
|
|
|
def tsort_each_node(&block)
|
|
@nodes.each(&block)
|
|
end
|
|
|
|
def tsort_each_child(node, &block)
|
|
@graph[node].each(&block)
|
|
end
|
|
|
|
def ensure(record)
|
|
@record = record
|
|
add_new_edges
|
|
detect_cycle
|
|
end
|
|
|
|
private
|
|
|
|
def add_new_edges
|
|
edges = @graph[@record.send(@source) || 0]
|
|
edges<< @record.send(@target) unless edges.include?(@record.send(@target))
|
|
end
|
|
|
|
def detect_cycle
|
|
if strongly_connected_components.any? { |component| component.size > 1 }
|
|
@record.errors.add :base, _("Adding would cause a cycle!")
|
|
raise ::Foreman::CyclicGraphException, @record
|
|
else
|
|
true
|
|
end
|
|
end
|
|
end
|
|
|
|
def id_and_type
|
|
"#{id}-#{self.class.table_name.humanize}"
|
|
end
|
|
alias_attribute :to_label, :name_method
|
|
alias_attribute :to_s, :to_label
|
|
|
|
def self.unconfigured?
|
|
scoped.reorder('').limit(1).pluck(self.base_class.primary_key).empty?
|
|
end
|
|
|
|
def self.per_page
|
|
# defined?(Rake) prevents the failure of db:migrate for postgresql
|
|
# don't query settings table if in rake
|
|
return 20 if defined?(Rake)
|
|
Setting.entries_per_page rescue 20
|
|
end
|
|
end
|
|
|
|
module ExemptedFromLogging
|
|
def process(request, *args)
|
|
logger.silence { super }
|
|
end
|
|
end
|
|
|
|
class String
|
|
def to_gb
|
|
begin
|
|
value,f,unit=self.match(/(\d+(\.\d+)?) ?(([KMGT]B?|B))$/i)[1..3]
|
|
case unit.to_sym
|
|
when nil, :B, :byte then (value.to_f / (4**10))
|
|
when :TB, :T, :terabyte then (value.to_f * (2**10))
|
|
when :GB, :G, :gigabyte then value.to_f
|
|
when :MB, :M, :megabyte then (value.to_f / (2**10))
|
|
when :KB, :K, :kilobyte, :kB then (value.to_f / (3**10))
|
|
else raise "Unknown unit: #{unit.inspect}!"
|
|
end
|
|
rescue
|
|
raise "Unknown string: #{self.inspect}!"
|
|
end
|
|
end
|
|
end
|
|
|
|
class ActiveModel::Errors
|
|
def are_all_conflicts?
|
|
self[:conflict].count == self.count
|
|
end
|
|
end
|
