old_contents: """Templatetags for the dynamic_content app."""
  from django import template
  
  from .. import models
  
  
  register = template.Library()
  
  
  @register.assignment_tag
  def get_content(identifier, default=None):
      '''
      Returns the DynamicContent instance for the given identifier.
  
      If no object is found, a new one will be created.
  
      :param identifier: String representing the unique identifier of a
        ``DynamicContent`` object.
      :param default: String that should be used in case that no matching
        ``DynamicContent`` object exists.
  
      '''
      if default is None:
          default = ''
  
      try:
          return models.DynamicContent.objects.get(identifier=identifier)
      except models.DynamicContent.DoesNotExist:
          return models.DynamicContent.objects.create(
              identifier=identifier, content=default)
  
new_contents: """Templatetags for the dynamic_content app."""
  from django import template
  
  from .. import models
  
  
  register = template.Library()
  
  
  @register.simple_tag
  def get_content(identifier, default=None):
      '''
      Returns the DynamicContent instance for the given identifier.
  
      If no object is found, a new one will be created.
  
      :param identifier: String representing the unique identifier of a
        ``DynamicContent`` object.
      :param default: String that should be used in case that no matching
        ``DynamicContent`` object exists.
  
      '''
      if default is None:
          default = ''
  
      try:
          return models.DynamicContent.objects.get(identifier=identifier)
      except models.DynamicContent.DoesNotExist:
          return models.DynamicContent.objects.create(
              identifier=identifier, content=default)
  
subject: Update dynamic_content_tags.py