Module: Remotable
- Extended by:
- Nosync, ValidateModels
- Defined in:
- lib/remotable.rb,
lib/remotable/nosync.rb,
lib/remotable/version.rb,
lib/remotable/core_ext/uri.rb,
lib/remotable/core_ext/object.rb,
lib/remotable/validate_models.rb,
lib/remotable/active_record_extender.rb,
lib/remotable/with_remote_model_proxy.rb,
lib/remotable/adapters/active_resource.rb
Overview
Remotable keeps a locally-stored ActiveRecord synchronized with a remote resource.
Requirements ==
Remotable expects there to be an expires_at
field on the record.
New resources ==
When a resource isn’t found locally, Remotable fetches it from the remote API and creates a local copy of the resource.
Expired resources ==
When a resource is found locally, Remotable checks the value of expires_at
and re-fetches the remote resource if need be.
Deleted resources ==
When a remote resources has been deleted, the local resource should be removed when it is expired.
Creating, Updating, and Destroying local resources ==
Before a local record is saved, Remotable tries to apply the changes remotely.
Defined Under Namespace
Modules: ActiveRecordExtender, Adapters, CoreExt, Nosync, ValidateModels Classes: InvalidRemoteModel, WithRemoteModelProxy
Constant Summary collapse
- REQUIRED_CLASS_METHODS =
[:find_by, :new_resource]
- REQUIRED_INSTANCE_METHODS =
[:save, :errors, :destroy]
- VERSION =
"0.2.0"
Instance Method Summary collapse
-
#remote_model(*args) ⇒ Object
remote_model( model [optional] ).
- #with_remote_model(model) ⇒ Object
Methods included from Nosync
nosync, nosync!, nosync=, nosync?
Methods included from ValidateModels
validate_models=, validate_models?, without_validation
Instance Method Details
#remote_model(*args) ⇒ Object
remote_model( model [optional] )
When called without arguments, this method returns the remote model connected to this local ActiveRecord model.
When called with an argument, it extends the ActiveRecord model on which it is called.
model
can be a class that inherits from any of these API consumers:
* ActiveResource
model
can be any object that responds to these two methods for getting a resource:
* +find_by(path)+ or +find_by(remote_attr, value)+
+find_by+ can be defined to take either one argument or two.
If it takes one argument, it will be passed path.
If it takes two, it will be passed remote_attr and value.
* +new_resource+
Resources must respond to:
* +save+ (return true on success and false on failure)
* +destroy+
* +errors+ (returning a hash of error messages by attribute)
* getters and setters for each attribute
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# File 'lib/remotable.rb', line 75 def remote_model(*args) if args.any? @remote_model = args.first @__remotable_included ||= begin require "remotable/active_record_extender" include Remotable::ActiveRecordExtender true end extend_remote_model(@remote_model) end @remote_model end |
#with_remote_model(model) ⇒ Object
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# File 'lib/remotable.rb', line 92 def with_remote_model(model) if block_given? begin original = self.remote_model self.remote_model(model) yield ensure self.remote_model(original) end else WithRemoteModelProxy.new(self, model) end end |