Module: Mcfly::Model::ClassMethods
- Defined in:
- lib/mcfly/has_mcfly.rb
Instance Method Summary collapse
- #has_mcfly(options = {}) ⇒ Object
- #mcfly_belongs_to(name, options = {}) ⇒ Object
- #mcfly_lookup(name, options = {}, &block) ⇒ Object
- #mcfly_validates_uniqueness_of(*attr_names) ⇒ Object
Instance Method Details
#has_mcfly(options = {}) ⇒ Object
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# File 'lib/mcfly/has_mcfly.rb', line 57 def has_mcfly( = {}) send :include, InstanceMethods before_validation :record_validation before_destroy :allow_destroy if [:append_only] # FIXME: :created_dt should also be readonly. However, we set # it for debugging purposes. Should consider making this # readonly once we're in production. Also, :user_id should be # read-only. We should only set whodunnit and let PostgreSQL # set it. attr_readonly :group_id, :obsoleted_dt, :o_user_id #, :user_id end |
#mcfly_belongs_to(name, options = {}) ⇒ Object
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# File 'lib/mcfly/has_mcfly.rb', line 117 def mcfly_belongs_to(name, = {}) validates_with Mcfly::Model::AssociationValidator, field: name belongs_to(name, ) # Store child associations for the parent category # e.g. if HedgeCost is adding a belong_to assoc to HedgeCostCategory # then add HedgeCost and FK to the @@associations array self.reflect_on_all_associations.each do |a| if a.name == name a.klass.class_variable_set(:@@associations, []) unless a.klass.class_variable_defined?(:@@associations) a.klass.class_variable_get(:@@associations) << [a.active_record, a.foreign_key] end end end |
#mcfly_lookup(name, options = {}, &block) ⇒ Object
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# File 'lib/mcfly/has_mcfly.rb', line 71 def mcfly_lookup(name, = {}, &block) delorean_fn(name, ) do |ts, *args| raise "time cannot be nil" if ts.nil? ts = Mcfly.normalize_infinity(ts) self.where("#{table_name}.obsoleted_dt >= ? AND " + "#{table_name}.created_dt < ?", ts, ts).scoping do block.call(ts, *args) end end end |
#mcfly_validates_uniqueness_of(*attr_names) ⇒ Object
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# File 'lib/mcfly/has_mcfly.rb', line 84 def mcfly_validates_uniqueness_of(*attr_names) # FIXME: this all looks somewhat hacky since it makes # assumptions about the shape of attr_names. Should, at # least, add some assertions here to check the assumptions. # Set MCFLY_UNIQUENESS class constant to the args passed. # This is useful for introspection. FIXME: won't work if # mcfly_validates_uniqueness_of is called multiple times on # the same class. attr_list = if attr_names.last.is_a?(Hash) attr_names[0..-2] + (attr_names.last[:scope] || []) else attr_names.clone end self.const_set(:MCFLY_UNIQUENESS, attr_list.freeze) # start building arguments to validates_uniqueness_of attr_names << {} unless attr_names.last.is_a?(Hash) attr_names.last[:scope] ||= [] # add :obsoleted_dt to the uniqueness scope attr_names.last[:scope] << :obsoleted_dt # Set uniqueness error message if not set. FIXME: need to # figure out how to change the base message. It still # prepends the pluralized main attr. attr_names.last[:message] ||= "- record must be unique" validates_uniqueness_of(*attr_names) end |