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Classe « Session »

Méthode sqlalchemy.orm.Session.add

Signature de la méthode add

def add(self, instance: 'object', _warn: 'bool' = True) -> 'None' 

Description

help(Session.add)

Place an object into this :class:`_orm.Session`.

Objects that are in the :term:`transient` state when passed to the
:meth:`_orm.Session.add` method will move to the
:term:`pending` state, until the next flush, at which point they
will move to the :term:`persistent` state.

Objects that are in the :term:`detached` state when passed to the
:meth:`_orm.Session.add` method will move to the :term:`persistent`
state directly.

If the transaction used by the :class:`_orm.Session` is rolled back,
objects which were transient when they were passed to
:meth:`_orm.Session.add` will be moved back to the
:term:`transient` state, and will no longer be present within this
:class:`_orm.Session`.

.. seealso::

    :meth:`_orm.Session.add_all`

    :ref:`session_adding` - at :ref:`session_basics`

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