from django import template
from improved_inlines.parser import inlines
import re

register = template.Library()


@register.filter
def render_inlines(value):
    """
    Renders inlines in a ``Post`` by passing them through inline templates.

    Template Syntax::

        {{ post.body|render_inlines|markdown:"safe" }}

    Inline Syntax (singular)::

        <inline type="<app_name>.<model_name>" id="<id>" class="med_left" />

    Inline Syntax (plural)::

        <inline type="<app_name>.<model_name>" ids="<id>, <id>, <id>" />

    An inline template will be used to render the inline. Templates will be
    located in the following manner:

        ``inlines/<app_name>_<model_name>.html``

    The template will be passed the following context:

        ``object``
            An object for the corresponding passed id.

    or

        ``object_list``
            A list of objects for the corresponding ids.

    It would be wise to anticipate both object_list and object unless
    you know for sure one or the other will only be present.
    """
    return inlines(value)

@register.filter
def extract_inlines(value):
    return inlines(value, True)
