morepath.publish – Web publisher

Functionality to turn a morepath.Request into a morepath.Response using Morepath configuration. It looks up a model instance for the request path and parameters, then looks up a view for that model object to create the response.

The publish module:

  • resolves the request into a model object.
  • resolves the model object and the request into a view.
  • the view then generates a response.

It all starts at publish().

morepath.publish.get_view_name(stack)

Determine view name from leftover stack of path segments

Parameters:stack – a list of path segments left over after consuming the path.
Returns:view name string or None if no view name can be determined.
morepath.publish.publish(request)

Handle request and return response.

It uses resolve_model() to use the information in request (path, request method, etc) to resolve to a model object. resolve_response() then creates a view for the request and the object.

Parameters:
morepath.publish.resolve_model(request)

Resolve request to a model object.

This takes the path information as a stack of path segments in morepath.Request.unconsumed and consumes it step by step using morepath.TrajectRegistry.consume() to find the model object as declared by morepath.App.path() directive. It can traverse through mounted applications as indicated by the morepath.App.mount() directive.

Param:morepath.Request instance.
Returns:model object or None if not found.
morepath.publish.resolve_response(obj, request)

Given model object and request, create response.

This uses get_view_name() to set up the view name on the request object.

If no view name exist it raises webob.exc.HTTPNotFound.

It then uses morepath.App.get_view() to resolve the view for the model object and the request by doing dynamic dispatch.

Parameters:
  • obj – model object to get response for.
  • request – morepath.Request instance.
Returns:

morepath.Response instance