wagtail-factories

Factory boy classes for Wagtail CMS

Installation

pip install wagtail-factories

Usage

Documentation is still in progress, but see the tests for more examples.

import wagtail_factories
from wagtail import models as wt_models

from . import models


class MyCarouselItemFactory(wagtail_factories.StructBlockFactory):
    label = 'my-label'
    image = factory.SubFactory(
        wagtail_factories.ImageChooserBlockFactory)

    class Meta:
        model = models.MyBlockItem


class MyCarouselFactory(wagtail_factories.StructBlockFactory):
    title = "Carousel title"
    items = wagtail_factories.ListBlockFactory(
        MyCarouselItemFactory)

    class Meta:
        model = models.MyCarousel


class MyNewsPageFactory(wagtail_factories.PageFactory):
    class Meta:
        model = models.MyNewsPage


class MyNewsPageChooserBlockFactory(wagtail_factories.PageChooserBlockFactory):
    page = factory.SubFactory(MyNewsPageFactory)


class MyTestPageFactory(wagtail_factories.PageFactory):
    body = wagtail_factories.StreamFieldFactory({
        'carousel': factory.SubFactory(MyCarouselFactory),
        'news_page': factory.SubFactory(MyNewsPageChooserBlockFactory),
    })

    class Meta:
        model = models.MyTestPage


def test_my_page():
    root_page = wt_models.Page.get_first_root_node()
    assert root_page is not None

    my_page = MyTestPageFactory(
        parent=root_page,
        title="My great page",
        body__0__carousel__items__0__label='Slide 1',
        body__0__carousel__items__0__image__image__title='Image Slide 1',
        body__0__carousel__items__1__label='Slide 2',
        body__0__carousel__items__1__image__image__title='Image Slide 2',
        body__0__carousel__items__2__label='Slide 3',
        body__0__carousel__items__2__image__image__title='Image Slide 3',
        body__1__news_page__page__title="News",
    )

    # Defaults defined on factory classes are propagated.
    assert my_page.body[0].value["title"] == "Carousel title"

    # Parameters are propagated.
    assert my_page.title == "My great page"
    assert my_page.body[0].value["items"][0].value["label"] == "Slide 1"

Using StreamBlockFactory

StreamBlockFactory can be used in conjunction with the other block factory types to create complex, nested StreamValues, much like how StreamBlock can be used to declare the blocks for a complex StreamField.

First, define your StreamBlockFactory subclass, using factory.SubFactory to wrap child block declarations. Be sure to include your StreamBlock subclass as the model attribute on the inner Meta class.

class MyStreamBlockFactory(wagtail_factories.StreamBlockFactory):
    my_struct_block = factory.SubFactory(MyStructBlockFactory)

    class Meta:
        model = MyStreamBlock

Then include your StreamBlockFactory subclass on a model factory as the argument to a StreamFieldFactory.

class MyPageFactory(wagtail_factories.PageFactory):
    body = wagtail_factories.StreamFieldFactory(MyStreamBlockFactory)

    class Meta:
        model = MyPage

You can then use a modified version of factory_boy's deep object declaration syntax to build up StreamValues on the fly.

MyPageFactory(
    body__0__my_struct_block__some_field="some value",
    body__0__my_struct_block__some_other_field="some other value",
)

To generate the default value for a block factory, terminate your declaration at the index and provide the block name as the value.

MyPageFactory(body__0="my_struct_block")

Alternative StreamFieldFactory declaration syntax

Prior to version 3.0, StreamFieldFactory could only be used by providing a dict mapping block names to block factory classes as the single argument, for example:

class MyTestPageWithStreamFieldFactory(wagtail_factories.PageFactory):
    body = wagtail_factories.StreamFieldFactory(
        {
            "char_array": wagtail_factories.ListBlockFactory(
                wagtail_factories.CharBlockFactory
            ),
            "int_array": wagtail_factories.ListBlockFactory(
                wagtail_factories.IntegerBlockFactory
            ),
            "struct": MyBlockFactory,
            "image": wagtail_factories.ImageChooserBlockFactory,
        }
    )

    class Meta:
        model = models.MyTestPage

This style of declaration is still supported, with the caveat that nested stream blocks are not supported for this approach. From version 3.0, all BlockFactory values in a StreamFieldFactory definition of this style must be wrapped in factory_boy SubFactories. For example, the above example must be updated to the following for 3.0 compatibility.

class MyTestPageWithStreamFieldFactory(wagtail_factories.PageFactory):
    body = wagtail_factories.StreamFieldFactory(
        {
            "char_array": wagtail_factories.ListBlockFactory(
                wagtail_factories.CharBlockFactory
            ),
            "int_array": wagtail_factories.ListBlockFactory(
                wagtail_factories.IntegerBlockFactory
            ),
            "struct": factory.SubFactory(MyBlockFactory),
            "image": factory.SubFactory(wagtail_factories.ImageChooserBlockFactory),
        }
    )

    class Meta:
        model = models.MyTestPage

This requirement does not apply to ListBlockFactory, which is a subclass of SubFactory.