Custom limeobject

Running the following:

cd cool-stuff
lime-project generate limeobject

Information

If you already have a limeobject_classes folder in your solution or package. Copy one of the existing LimeObject files instead of running above command.

Information

It's a good practice to name the limeobject_class.py file to what limetype it handles. i.e. person.py or limeobject_person.py

If you want to create a custom limeobject for another limetype do the following: * Change the name of the class: python class Person(LimeObject): * Change what limetype to override in the register_limeobject_classes function in the file: python def register_limeobject_classes(register_class): register_class('person', Person) register_class('person', Person)

yields the following code in cool-stuff/cool_stuff/limeobject_classes/limeobject_class.py:

class Person(LimeObject):
    """Summarize the function of a person object here"""

    def before_update(self, uow, **kwargs):
        """
        This is called on all new and updated objects. All changes
        made to the object here will be persisted.
        All other objects that are changed or created here must be
        added to the unit of work.
        """
        self.properties.name.value = '{} {}'.format(
            self.properties.firstname.value,
            self.properties.lastname.value)

    def before_delete(self, uow, **kwargs):
        """
        This is called on objects that are about to be deleted,
        before relations are detached. All changes made to
        the object here will be persisted.
        All other objects that are changed or created here must be
        added to the unit of work.

        """
        pass

    def after_update(self, unsaved_self, **kwargs):
        """
        This is called after the object has been saved, but before the
        transaction has been committed. IDs on new records will be set,
        and values that has changed are available on the unsaved_self
        object.
        Changes made to the object here will NOT be persisted.
        This is the place to publish custom events.
        """
        if unsaved_self.properties.name.is_dirty():
            self.publish('custom.person.renamed', {
                'old_name': unsaved_self.properties.name.original_value,
                'new_name': self.properties.name.value})


def register_limeobject_classes(register_class):
    register_class('person', Person)

it also creates the following files: * cool-stuff/cool_stuff/limeobject_classes/limeobject_class_test.py (Example of tests) * cool-stuff/cool_stuff/limeobject_classes/__init__.py (For registering the custom lime objects)

This generates a custom limeobject and registers it to handle objects of type person in Lime CRM. This means that whenever you create a limeobject of type person, or whenever you retrieve a person from the database, this class will be instantiated instead of the default LimeObject

The code generated for our package adds hooks for before and after a person is about to be saved to the database.

In before_updated we set the property name to be the concatenation of the person's first and last name.

In after_update, we check to see if a person's name has changed and publishes an event called 'custom.person.renamed' containing the old and the new name that others can listen to.