module ColumnsOnDemand::InstanceMethods
Public Instance Methods
_has_attribute?(attr_name)
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Calls superclass method
# File lib/columns_on_demand.rb, line 71 def _has_attribute?(attr_name) super || columns_to_load_on_demand.include?(attr_name) end
_read_attribute(attr_name, &block)
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Calls superclass method
# File lib/columns_on_demand.rb, line 113 def _read_attribute(attr_name, &block) ensure_loaded(attr_name) super(attr_name, &block) end
_write_attribute(attr_name, value)
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Calls superclass method
# File lib/columns_on_demand.rb, line 123 def _write_attribute(attr_name, value) ensure_loaded(attr_name) super(attr_name, value) end
attribute_changed_in_place?(attr_name)
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Calls superclass method
# File lib/columns_on_demand.rb, line 99 def attribute_changed_in_place?(attr_name) column_loaded?(attr_name) && super(attr_name) end
attribute_method?(attr_name)
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Calls superclass method
# File lib/columns_on_demand.rb, line 67 def attribute_method?(attr_name) super || columns_to_load_on_demand.include?(attr_name) end
attribute_names()
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Calls superclass method
# File lib/columns_on_demand.rb, line 63 def attribute_names (super + columns_to_load_on_demand).uniq.sort end
attributes()
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Calls superclass method
# File lib/columns_on_demand.rb, line 54 def attributes loaded_attributes = @attributes.keys if loaded_attributes.size == self.class.columns_to_load_by_default.size && loaded_attributes.size == (self.class.columns_to_load_by_default & loaded_attributes).size load_attributes(*columns_to_load_on_demand.reject {|attr_name| column_loaded?(attr_name)}) end super end
changed_in_place?(attr_name)
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Calls superclass method
# File lib/columns_on_demand.rb, line 95 def changed_in_place?(attr_name) column_loaded?(attr_name) && super(attr_name) end
column_loaded?(attr_name)
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# File lib/columns_on_demand.rb, line 50 def column_loaded?(attr_name) !columns_to_load_on_demand.include?(attr_name) || @attributes.key?(attr_name) || new_record? || columns_loaded.include?(attr_name) end
columns_loaded()
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# File lib/columns_on_demand.rb, line 46 def columns_loaded @columns_loaded ||= Set.new end
ensure_loaded(attr_name)
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# File lib/columns_on_demand.rb, line 91 def ensure_loaded(attr_name) load_attributes(attr_name.to_s) unless column_loaded?(attr_name.to_s) end
load_attributes(*attr_names)
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# File lib/columns_on_demand.rb, line 75 def load_attributes(*attr_names) return if attr_names.blank? values = self.class.connection.select_rows( "SELECT #{attr_names.collect {|attr_name| self.class.connection.quote_column_name(attr_name)}.join(", ")}" + " FROM #{self.class.quoted_table_name}" + " WHERE #{self.class.connection.quote_column_name(self.class.primary_key)} = #{self.class.connection.quote(id)}") row = values.first || raise(ActiveRecord::RecordNotFound, "Couldn't find #{self.class.name} with ID=#{id}") attr_names.each_with_index do |attr_name, i| columns_loaded << attr_name value = row[i] @attributes.write_from_database(attr_name, value) end end
missing_attribute(attr_name, *args)
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Calls superclass method
# File lib/columns_on_demand.rb, line 128 def missing_attribute(attr_name, *args) if columns_to_load_on_demand.include?(attr_name) load_attributes(attr_name) else super(attr_name, *args) end end
read_attribute(attr_name, &block)
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Calls superclass method
# File lib/columns_on_demand.rb, line 103 def read_attribute(attr_name, &block) ensure_loaded(attr_name) super(attr_name, &block) end
read_attribute_before_type_cast(attr_name)
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Calls superclass method
# File lib/columns_on_demand.rb, line 108 def read_attribute_before_type_cast(attr_name) ensure_loaded(attr_name) super(attr_name) end
reload(*args)
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Calls superclass method
# File lib/columns_on_demand.rb, line 136 def reload(*args) super(*args).tap do columns_loaded.clear columns_to_load_on_demand.each do |attr_name| if @attributes.respond_to?(:reset) # 4.2 and above @attributes.reset(attr_name) else # 4.1 and earlier @attributes.delete(attr_name) end end end end
write_attribute(attr_name, value)
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Calls superclass method
# File lib/columns_on_demand.rb, line 118 def write_attribute(attr_name, value) ensure_loaded(attr_name) super(attr_name, value) end