Source code for ferrosoft.apps.ferrobase.templating

"""Utilities for rendering Django templates from raw strings."""
from django.template import engines, TemplateSyntaxError, TemplateDoesNotExist




def template_from_string(template_string, using=None):
    """
    Convert a string into a template object,
    using a given template engine or using the default backends
    from settings.TEMPLATES if no engine was specified.
    """
    # This function is based on django.template.loader.get_template,
    # but uses Engine.from_string instead of Engine.get_template.
    chain = []
    engine_list = engines.all() if using is None else [engines[using]]
    for engine in engine_list:
        try:
            return engine.from_string(template_string)
        except TemplateSyntaxError as e:
            chain.append(e)
    raise TemplateDoesNotExist("[from string]", chain=chain)