Dom ID

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from django import template


register = template.Library()

@register.filter
def dom_id(el, prefix=None):
    """
    {{book|dom_id}} # book_1
    {{book|dom_id:'prefix'}} # prefix_book_1
    """
    return '_'.join([part for part in [prefix, el._meta.module_name, str(el.id)] if part])

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Comments

Romain Hardouin (on November 20, 2009):

For people who wonder what's RoR dom_id : it's used to generate an unique ID in HTML template. e.g. <img id="{{ book|dom_id }}" src="..." />

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