Class Loader

Declaration

Methods

• ▶ def __init__(self, engine, loaders) override

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  This method overrides django.template.loaders.base.Loader.__init__.

• ▶ def cache_key(self, template_name, skip=None)

  Generate a cache key for the template name and skip.

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  If skip is provided, only origins that match template_name are included
  in the cache key. This ensures each template is only parsed and cached
  once if contained in different extend chains like:
  
      x -> a -> a
      y -> a -> a
      z -> a -> a

• ▷ def generate_hash(self, values)

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• ▷ def get_contents(self, origin)

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• ▷ def get_dirs(self)

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• ▶ def get_template(self, template_name, skip=None) override

  Perform the caching that gives this loader its name. Often many of the

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  This method overrides django.template.loaders.base.Loader.get_template.

  templates attempted will be missing, so memory use is of concern here.
  To keep it in check, caching behavior is a little complicated when a
  template is not found. See ticket #26306 for more details.
  
  With template debugging disabled, cache the TemplateDoesNotExist class
  for every missing template and raise a new instance of it after
  fetching it from the cache.
  
  With template debugging enabled, a unique TemplateDoesNotExist object
  is cached for each missing template to preserve debug data. When
  raising an exception, Python sets __traceback__, __context__, and
  __cause__ attributes on it. Those attributes can contain references to
  all sorts of objects up the call chain and caching them creates a
  memory leak. Thus, unraised copies of the exceptions are cached and
  copies of those copies are raised after they're fetched from the cache.

• ▶ def get_template_sources(self, template_name) override

  inherited doc An iterator that yields possible matching template paths for a template name.

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  This method overrides django.template.loaders.base.Loader.get_template_sources.

• ▶ def reset(self) override

  Empty the template cache.

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  This method overrides django.template.loaders.base.Loader.reset.

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