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Viewing changes to ivle/webapp/tutorial/__init__.py

  • Committer: Nick Chadwick
  • Date: 2009-03-10 13:35:39 UTC
  • mto: This revision was merged to the branch mainline in revision 1162.
  • Revision ID: chadnickbok@gmail.com-20090310133539-1zerqg77sy6izqku
Exercise objects in the database module, along with their test cases,
now have delete() methods, which allow for 'safe' removal. Calling
this method will only delete an exercise if it has no saves or attempts
associated with it.

Updated ExerciseDeleteView to make use of this new functionality.

Updated ExerciseDeleteView, and its template, to be clearer in their
control flow.

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Lines of Context:
ivle/webapp/tutorial/__init__.py
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        if self.context is None:
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            raise NotFound()
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    #Remove the context and all of its tests
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    def remove_exercise(self, req):
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        for suite in self.context.test_suites:
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            for var in suite.variables:
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                req.store.remove(var)
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            for case in suite.test_cases:
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                for part in case.parts:
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                    req.store.remove(part)
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                req.store.remove(case)
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            req.store.remove(suite)
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        req.store.remove(self.context)
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    def populate(self, req, ctx):
 
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        # If post, delete the exercise, or display a message explaining that
 
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        # the exercise cannot be deleted
 
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        if req.method == 'POST':
 
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            ctx['method'] = 'POST'
 
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            ctx['deleted'] = self.context.delete(req.store)
 
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        # If get, display a delete confirmation page
 
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        else:
 
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            ctx['method'] = 'GET'
 
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            if self.context.worksheet_exercises.count() is not 0:
 
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                ctx['has_worksheets'] = True
 
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            else:
 
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                ctx['has_worksheets'] = False
 
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        # Variables for the template
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        ctx['exercise'] = self.context
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        ctx['deleted'] = False
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        ctx['path'] = "/+exercises/" + self.context.id + "/+delete"
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        if req.method == 'POST':
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            if self.context.worksheet_exercises.count() is not 0:
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                ctx['hasworksheets'] = True
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            else:
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                self.remove_exercise(req)
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                ctx['deleted'] = True
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        else:
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            if self.context.worksheet_exercises.count() is not 0:
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                ctx['hasworksheets'] = True
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            else:
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                ctx['hasworksheets'] = False
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class ExerciseAddView(XHTMLView):
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    """View for creating a new exercise."""