To manage all stored images, you need to:

* Go to *Settings > Technical > Multi images*.

... but you probably prefer to manage them from the forms supplied by
submodules that inherit this behavior.

Development
===========

To develop a module based on this one:

* See module ``product_multi_image`` as an example.

* You have to inherit model ``base_multi_image.owner`` to the model that needs
  the gallery::

    class MyOwner(models.Model):
        _name = "my.model.name"
        _inherit = ["my.model.name", "base_multi_image.owner"]

        # If you need this, you will need ``pre_init_hook_for_submodules`` and
          ``uninstall_hook_for_submodules`` as detailed below.
        old_image_field = fields.Binary(related="image_main", store=False)

* Somewhere in the owner view, add::

    <field
        name="image_ids"
        nolabel="1"
        context="{
            'default_owner_model': 'my.model.name',
            'default_owner_id': id,
        }"
        mode="kanban"/>

* If the model you are extending already had an image field, and you want to
  trick Odoo to make those images to multi-image mode, you will need to make
  use of the provided `~.hooks.pre_init_hook_for_submodules` and
  `~.hooks.uninstall_hook_for_submodules`, like the
  ``product_multi_image`` module does::

    try:
        from odoo.addons.base_multi_image.hooks import (
            pre_init_hook_for_submodules,
            uninstall_hook_for_submodules,
        )
    except ImportError:
        pass


    def pre_init_hook(cr):
        """Transform single into multi images."""
        pre_init_hook_for_submodules(cr, "product.template", "image")
        pre_init_hook_for_submodules(cr, "product.product", "image_variant")


    def uninstall_hook(cr, registry):
        """Remove multi images for models that no longer use them."""
        uninstall_hook_for_submodules(cr, registry, "product.template")
        uninstall_hook_for_submodules(cr, registry, "product.product")


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