code: def get_path_fields(self, path, method, view):
          
          model = getattr(getattr(view, 'queryset', None), 'model', None)
          fields = []
  
          for variable in uritemplate.variables(path):
  
              if variable == 'version':
                  continue
  
              title = ''
              description = ''
              schema_cls = coreschema.String
              kwargs = {}
              if model is not None:
                  # Attempt to infer a field description if possible.
                  try:
                      model_field = model._meta.get_field(variable)
                  except:
                      model_field = None
  
                  if model_field is not None and model_field.verbose_name:
                      title = force_text(model_field.verbose_name)
  
                  if model_field is not None and model_field.help_text:
                      description = force_text(model_field.help_text)
                  elif model_field is not None and model_field.primary_key:
                      description = get_pk_description(model, model_field)
  
                  if hasattr(view, 'lookup_value_regex') and view.lookup_field == variable:
                      kwargs['pattern'] = view.lookup_value_regex
                  elif isinstance(model_field, models.AutoField):
                      schema_cls = coreschema.Integer
  
              field = Field(
                  name=variable,
                  location='path',
                  required=True,
                  schema=schema_cls(title=title, description=description, **kwargs)
              )
              fields.append(field)
  
          return fields
docs: Return a list of `coreapi.Field` instances corresponding to any
          templated path variables.