class | -> | model |
@api public |
Makes sure a class gets all the methods when it includes Resource
Note that including this module into an anonymous class will leave the model descendant tracking mechanism with no possibility to reliably track the anonymous model across code reloads. This means that {DataMapper::DescendantSet} will currently leak memory in scenarios where anonymous models are reloaded multiple times (as is the case in dm-rails development mode for example).
@api private
Compares two Resources to allow them to be sorted
@param [Resource] other
The other Resource to compare with
@return [Integer]
Return 0 if Resources should be sorted as the same, -1 if the other Resource should be after self, and 1 if the other Resource should be before self
@api public
Checks if an attribute has unsaved changes
@param [Symbol] name
name of attribute to check for unsaved changes
@return [Boolean]
true if attribute has unsaved changes
@api semipublic
Returns the value of the attribute.
Do not read from instance variables directly, but use this method. This method handles lazy loading the attribute and returning of defaults if nessesary.
@example
class Foo include DataMapper::Resource property :first_name, String property :last_name, String def full_name "#{attribute_get(:first_name)} #{attribute_get(:last_name)}" end # using the shorter syntax def name_for_address_book "#{last_name}, #{first_name}" end end
@param [Symbol] name
name of attribute to retrieve
@return [Object]
the value stored at that given attribute (nil if none, and default if necessary)
@api public
Checks if an attribute has been loaded from the repository
@example
class Foo include DataMapper::Resource property :name, String property :description, Text, :lazy => false end Foo.new.attribute_loaded?(:description) #=> false
@return [Boolean]
true if ivar +name+ has been loaded
@return [Boolean]
true if ivar +name+ has been loaded
@api private
Sets the value of the attribute and marks the attribute as dirty if it has been changed so that it may be saved. Do not set from instance variables directly, but use this method. This method handles the lazy loading the property and returning of defaults if nessesary.
@example
class Foo include DataMapper::Resource property :first_name, String property :last_name, String def full_name(name) name = name.split(' ') attribute_set(:first_name, name[0]) attribute_set(:last_name, name[1]) end # using the shorter syntax def name_from_address_book(name) name = name.split(', ') first_name = name[1] last_name = name[0] end end
@param [Symbol] name
name of attribute to set
@param [Object] value
value to store
@return [undefined]
@api public
Gets all the attributes of the Resource instance
@param [Symbol] key_on
Use this attribute of the Property as keys. defaults to :name. :field is useful for adapters :property or nil use the actual Property object.
@return [Hash]
All the attributes
@api public
Assign values to multiple attributes in one call (mass assignment)
@param [Hash] attributes
names and values of attributes to assign
@return [Hash]
names and values of attributes assigned
@api public
Checks if the resource has no changes to save
@return [Boolean]
true if the resource may not be persisted
@api public
Returns the Collection the Resource is associated with
@return [nil]
nil if this is a new record
@return [Collection]
a Collection that self belongs to
@api private
Associates a Resource to a Collection
@param [Collection, nil] collection
the collection to associate the resource with
@return [nil]
nil if this is a new record
@return [Collection]
a Collection that self belongs to
@api private
Return a collection including the current resource only
@return [Collection]
a collection containing self
@api private
Destroy the instance, remove it from the repository
@return [Boolean]
true if resource was destroyed
@api public
Destroy the instance, remove it from the repository, bypassing hooks
@return [Boolean]
true if resource was destroyed
@api public
Checks if this Resource instance is destroyed
@return [Boolean]
true if the resource has been destroyed
@api public
Checks if the resource has unsaved changes
@return [Boolean]
true if resource may be persisted
@api public
Hash of attributes that have unsaved changes
@return [Hash]
attributes that have unsaved changes
@api semipublic
Compares another Resource for equality
Resource is equal to other if they are the same object (identical object_id) or if they are both of the *same model* and all of their attributes are equivalent
@param [Resource] other
the other Resource to compare with
@return [Boolean]
true if they are equal, false if not
@api public
Returns hash value of the object. Two objects with the same hash value assumed equal (using eql? method)
DataMapper resources are equal when their models have the same hash and they have the same set of properties
When used as key in a Hash or Hash subclass, objects are compared by eql? and thus hash value has direct effect on lookup
@api private
Get a Human-readable representation of this Resource instance
Foo.new #=> #<Foo name=nil updated_at=nil created_at=nil id=nil>
@return [String]
Human-readable representation of this Resource instance
@api public
Checks if this Resource instance is new
@return [Boolean]
true if the resource is new and not saved
@api public
Hash of original values of attributes that have unsaved changes
@return [Hash]
original values of attributes that have unsaved changes
@api semipublic
Get the persisted state for the resource
@return [Resource::PersistenceState]
the current persisted state for the resource
@api private
Set the persisted state for the resource
@param [Resource::PersistenceState]
the new persisted state for the resource
@return [undefined]
@api private
Test if the persisted state is set
@return [Boolean]
true if the persisted state is set
@api private
Return if Resource#save should raise an exception on save failures (per-resource)
This delegates to model.raise_on_save_failure by default.
user.raise_on_save_failure # => false
@return [Boolean]
true if a failure in Resource#save should raise an exception
@api public
Specify if Resource#save should raise an exception on save failures (per-resource)
@param [Boolean]
a boolean that if true will cause Resource#save to raise an exception
@return [Boolean]
true if a failure in Resource#save should raise an exception
@api public
Checks if this Resource instance is readonly
@return [Boolean]
true if the resource cannot be persisted
@api public
Reloads association and all child association
This is accomplished by resetting the Resource key to it‘s original value, and then removing all the ivars for properties and relationships. On the next access of those ivars, the resource will eager load what it needs. While this is more of a lazy reload, it should result in more consistent behavior since no cached results will remain from the initial load.
@return [Resource]
the receiver, the current Resource instance
@api public
Repository this resource belongs to in the context of this collection or of the resource‘s class.
@return [Repository]
the respository this resource belongs to, in the context of a collection OR in the instance's Model's context
@api semipublic
Save the instance and loaded, dirty associations to the data-store
@return [Boolean]
true if Resource instance and all associations were saved
@api public
Save the instance and loaded, dirty associations to the data-store, bypassing hooks
@return [Boolean]
true if Resource instance and all associations were saved
@api public
Checks if this Resource instance is saved
@return [Boolean]
true if the resource has been saved
@api public
Updates attributes and saves this Resource instance
@param [Hash] attributes
attributes to be updated
@return [Boolean]
true if resource and storage state match
@api public
Updates attributes and saves this Resource instance, bypassing hooks
@param [Hash] attributes
attributes to be updated
@return [Boolean]
true if resource and storage state match
@api public