Django's standard behaviour is to preserve managers that are set on abstract
superclasses, so this allows us to eliminate the metaclass hackery.
Fixes#2933
It should be max and min value - not length. See [here](07c3ba84fb/wagtail/wagtailcore/blocks/field_block.py (L306)).
So this would work
`blocks.IntegerBlock(max_value=10, min_value=0)`
but this wouldn't do anything
`blocks.IntegerBlock(max_length=10, min_length=0)`
Update render and render_basic methods on Block to take a context kwarg
Update TableBlock to support passing extra context to render
Implement render_as_block on BoundBlock, StreamValue and StructValue.
Collectively, these are the objects encountered during template rendering which typically render
a block template when output inside {{ ... }} tags. Implementing render_as_block allows us to do
the same thing, but passing a template context as well.
Implement include_block tag
Support extra context vars on include_block via 'with foo=bar'
Support 'only' flag on include_block tag, to omit the parent context
Update StreamField documentation to cover the include_block tag
Rewrite 'BoundBlocks and values' docs based on the include_block tag
Add tests for blocks with legacy render / render_basic methods
Any bits of StreamField infrastructure that attempt to call render or render_basic
on a block with a 'context' kwarg, should (for now) also work on blocks that don't
accept the context kwarg, but output a RemovedInWagtail18Warning.
Explicitly test whether render / render_basic will accept a 'context' kwarg
This avoids unexpected behaviour when the method legitimately accepts a context
kwarg, but happens to throw an unrelated TypeError - in this situation, the final
output (or error diagnostics) will behave as if the context was never passed,
making debugging difficult. See https://github.com/torchbox/wagtail/pull/2786#discussion_r69563984
The `form_template` attribute was mentioned in passing in the docs, but was missing various things
to make it fully useful:
- context passed to form_template now includes 'prefix' and 'block_definition'
- context for the form is now populated in a separate overrideable `get_form_context` method
- full documentation and tests for form_template and get_form_context added
The individual `error_message` kwarg on RegexField is deprecated in Django 1.8
(and removed in Django 1.10), so it's appropriate for RegexBlock to follow the
same convention.
Most of the samples were already 4-space indented, but a few were using 2-space,
which is both inconsistent and, when it happened with Python code samples,
incompatible with PEP8.
Indexed.search_fields used to be a tuple. This is incorrect, and it
should have been a list. Changing it to be a list now would be a
backwards incompatible change, as people do
search_fields = Page.search_fields + (
SearchField('body')
)
Adding a tuple to the end of a list causes an error, so this would
cause all old code that used tuples to throw an error. This is not
great.
A new ThisShouldBeAList class, which subclasses list, has been added.
It additionally allows tuples to be added to it, as in the above
behaviour, but will raise a deprecation warning if someone does this.
Old code that uses tuples will continue to work, but raise a deprecation
warning.
See #2310
Generating links with `link text <./path/to/doc#anchor>`__ does not work for html.
It produces a link to `./path/to/doc#anchor` instead of `./path/to/doc.html#anchor`.
It would be tempting to add `.html` before `#` but would likely cause some more issues
when generating the documentation as pdf or epub.
References on the other hand will work regardless of the output format.
Previously, if a developer wanted to use a custom Manager on their Page
subclass, some fairly hacky hacks were required. Now, the `objects`
attribute is only overridden if it is a plain `Manager`. If it is
anything else, it is left alone. A system check has been added to ensure
that all `Page` managers inherit from `PageManager`
The `alt` attribute that was automatically generated as part of the
`{% image %}` tag could not be overridden. If template authors passed
their own `alt="..."` attribute in, two would be printed out instead
of the default one being overridden.
The relevant code has been refactored to build a dict of attributes,
allowing the default set to be overridden, and then printing them using
`flatatt`.
Fixes#1933
Matt Westcott