Erro ao remover ou despublicar uma Agenda associada à uma Title Agenda

[idgserpro]

Quando removo ou despublico uma Agenda associada com uma Title Agenda, ocorre o erro:

2016-03-07 17:12:13 ERROR plone.subrequest Error handling subrequest to http://localhost:8080/Plone/teste/@@agenda/c24d15bd-fdf8-411c-bffc-67b36b68be16
Traceback (most recent call last):
  File "/home/user/cache-python/eggs/plone.subrequest-1.6.9-py2.7.egg/plone/subrequest/__init__.py", line 136, in subrequest
    bind=1)
  File "/home/user/cache-python/eggs/Zope2-2.13.23-py2.7.egg/ZPublisher/mapply.py", line 78, in mapply
    else: return object(*args)
  File "/home/user/cache-python/eggs/plone.tiles-1.5.1-py2.7.egg/plone/tiles/esi.py", line 59, in __call__
    return self.index(*args, **kwargs)
  File "/home/user/cache-python/eggs/Zope2-2.13.23-py2.7.egg/Products/Five/browser/pagetemplatefile.py", line 125, in __call__
    return self.im_func(im_self, *args, **kw)
  File "/home/user/cache-python/eggs/Zope2-2.13.23-py2.7.egg/Products/Five/browser/pagetemplatefile.py", line 59, in __call__
    sourceAnnotations=getattr(debug_flags, 'sourceAnnotations', 0),
  File "/home/user/cache-python/eggs/zope.pagetemplate-3.6.3-py2.7.egg/zope/pagetemplate/pagetemplate.py", line 132, in pt_render
    strictinsert=0, sourceAnnotations=sourceAnnotations
  File "/home/user/cache-python/eggs/zope.pagetemplate-3.6.3-py2.7.egg/zope/pagetemplate/pagetemplate.py", line 240, in __call__
    interpreter()
  File "/home/user/cache-python/eggs/zope.tal-3.5.2-py2.7.egg/zope/tal/talinterpreter.py", line 271, in __call__
    self.interpret(self.program)
  File "/home/user/cache-python/eggs/zope.tal-3.5.2-py2.7.egg/zope/tal/talinterpreter.py", line 343, in interpret
    handlers[opcode](self, args)
  File "/home/user/cache-python/eggs/zope.tal-3.5.2-py2.7.egg/zope/tal/talinterpreter.py", line 821, in do_loop_tal
    self.interpret(block)
  File "/home/user/cache-python/eggs/zope.tal-3.5.2-py2.7.egg/zope/tal/talinterpreter.py", line 343, in interpret
    handlers[opcode](self, args)
  File "/home/user/cache-python/eggs/zope.tal-3.5.2-py2.7.egg/zope/tal/talinterpreter.py", line 533, in do_optTag_tal
    self.do_optTag(stuff)
  File "/home/user/cache-python/eggs/zope.tal-3.5.2-py2.7.egg/zope/tal/talinterpreter.py", line 518, in do_optTag
    return self.no_tag(start, program)
  File "/home/user/cache-python/eggs/zope.tal-3.5.2-py2.7.egg/zope/tal/talinterpreter.py", line 513, in no_tag
    self.interpret(program)
  File "/home/user/cache-python/eggs/zope.tal-3.5.2-py2.7.egg/zope/tal/talinterpreter.py", line 343, in interpret
    handlers[opcode](self, args)
  File "/home/user/cache-python/eggs/zope.tal-3.5.2-py2.7.egg/zope/tal/talinterpreter.py", line 852, in do_condition
    self.interpret(block)
  File "/home/user/cache-python/eggs/zope.tal-3.5.2-py2.7.egg/zope/tal/talinterpreter.py", line 343, in interpret
    handlers[opcode](self, args)
  File "/home/user/cache-python/eggs/zope.tal-3.5.2-py2.7.egg/zope/tal/talinterpreter.py", line 533, in do_optTag_tal
    self.do_optTag(stuff)
  File "/home/user/cache-python/eggs/zope.tal-3.5.2-py2.7.egg/zope/tal/talinterpreter.py", line 518, in do_optTag
    return self.no_tag(start, program)
  File "/home/user/cache-python/eggs/zope.tal-3.5.2-py2.7.egg/zope/tal/talinterpreter.py", line 513, in no_tag
    self.interpret(program)
  File "/home/user/cache-python/eggs/zope.tal-3.5.2-py2.7.egg/zope/tal/talinterpreter.py", line 343, in interpret
    handlers[opcode](self, args)
  File "/home/user/cache-python/eggs/zope.tal-3.5.2-py2.7.egg/zope/tal/talinterpreter.py", line 620, in do_insertText_tal
    text = self.engine.evaluateText(stuff[0])
  File "/home/user/cache-python/eggs/Zope2-2.13.23-py2.7.egg/Products/PageTemplates/Expressions.py", line 225, in evaluateText
    text = self.evaluate(expr)
  File "/home/user/cache-python/eggs/zope.tales-3.5.3-py2.7.egg/zope/tales/tales.py", line 696, in evaluate
    return expression(self)
  File "/home/user/cache-python/eggs/zope.tales-3.5.3-py2.7.egg/zope/tales/expressions.py", line 217, in __call__
    return self._eval(econtext)
  File "/home/user/cache-python/eggs/Zope2-2.13.23-py2.7.egg/Products/PageTemplates/Expressions.py", line 155, in _eval
    return render(ob, econtext.vars)
  File "/home/user/cache-python/eggs/Zope2-2.13.23-py2.7.egg/Products/PageTemplates/Expressions.py", line 117, in render
    ob = ob()
  File "/home/user/sites/portal.buildout/src/brasil.gov.agenda/src/brasil/gov/agenda/tiles/agenda.py", line 135, in period
    return self._period(self._last_modified())
  File "/home/user/sites/portal.buildout/src/brasil.gov.agenda/src/brasil/gov/agenda/tiles/agenda.py", line 94, in _last_modified
    last_modified = int(agenda.modified().strftime('%s'))
AttributeError: 'NoneType' object has no attribute 'modified'
2016-03-07 17:12:13 ERROR plone.transformchain Unexpected error whilst trying to apply transform chain
Traceback (most recent call last):
  File "/home/user/cache-python/eggs/plone.transformchain-1.0.4-py2.7.egg/plone/transformchain/transformer.py", line 48, in __call__
    newResult = handler.transformIterable(result, encoding)
  File "/home/user/cache-python/eggs/plone.app.blocks-3.0.1-py2.7.egg/plone/app/blocks/transform.py", line 166, in transformIterable
    result.tree = tiles.renderTiles(self.request, result.tree)
  File "/home/user/cache-python/eggs/plone.app.blocks-3.0.1-py2.7.egg/plone/app/blocks/tiles.py", line 52, in renderTiles
    tileTree = utils.resolve(tileHref)
  File "/home/user/cache-python/eggs/plone.app.blocks-3.0.1-py2.7.egg/plone/app/blocks/utils.py", line 64, in resolve
    resolved = resolveResource(url)
  File "/home/user/cache-python/eggs/plone.app.blocks-3.0.1-py2.7.egg/plone/app/blocks/utils.py", line 104, in resolveResource
    raise RuntimeError(resolved)
RuntimeError:   <h2>Site Error</h2>
  <p>An error was encountered while publishing this resource.
  </p>
  <p><strong><type 'exceptions.AttributeError'></strong></p>

  Sorry, a site error occurred.<p><p>Traceback (innermost last):</p>
<ul>

<li>  Module plone.subrequest, line 136, in subrequest</li>

<li>  Module ZPublisher.mapply, line 78, in mapply</li>

<li>  Module plone.tiles.esi, line 59, in __call__</li>

<li>  Module Products.Five.browser.pagetemplatefile, line 125, in __call__</li>

<li>  Module Products.Five.browser.pagetemplatefile, line 59, in __call__</li>

<li>  Module zope.pagetemplate.pagetemplate, line 132, in pt_render</li>

<li>  Module zope.pagetemplate.pagetemplate, line 240, in __call__</li>

<li>  Module zope.tal.talinterpreter, line 271, in __call__</li>

<li>  Module zope.tal.talinterpreter, line 343, in interpret</li>

<li>  Module zope.tal.talinterpreter, line 821, in do_loop_tal</li>

<li>  Module zope.tal.talinterpreter, line 343, in interpret</li>

<li>  Module zope.tal.talinterpreter, line 533, in do_optTag_tal</li>

<li>  Module zope.tal.talinterpreter, line 518, in do_optTag</li>

<li>  Module zope.tal.talinterpreter, line 513, in no_tag</li>

<li>  Module zope.tal.talinterpreter, line 343, in interpret</li>

<li>  Module zope.tal.talinterpreter, line 852, in do_condition</li>

<li>  Module zope.tal.talinterpreter, line 343, in interpret</li>

<li>  Module zope.tal.talinterpreter, line 533, in do_optTag_tal</li>

<li>  Module zope.tal.talinterpreter, line 518, in do_optTag</li>

<li>  Module zope.tal.talinterpreter, line 513, in no_tag</li>

<li>  Module zope.tal.talinterpreter, line 343, in interpret</li>

<li>  Module zope.tal.talinterpreter, line 620, in do_insertText_tal</li>

<li>  Module Products.PageTemplates.Expressions, line 225, in evaluateText</li>

<li>  Module zope.tales.tales, line 696, in evaluate<br />
<b>URL: /home/user/sites/portal.buildout/src/brasil.gov.agenda/src/brasil/gov/agenda/tiles/templates/agenda.pt</b><br />
<b>Line 40, Column 38</b><br />
<b>Expression: &lt;PathExpr standard:u'view/period'&gt;</b><br />
<b>Names:</b><pre>{'args': (),
 'container': &lt;Cover at /Plone/teste&gt;,
 'context': &lt;Cover at /Plone/teste&gt;,
 'default': &lt;object object at 0xb7593b58&gt;,
 'here': &lt;Cover at /Plone/teste&gt;,
 'loop': {},
 'nothing': None,
 'options': {},
 'repeat': &lt;Products.PageTemplates.Expressions.SafeMapping object at 0xb3ac5f54&gt;,
 'request': &lt;HTTPRequest, URL=http://localhost:8080/Plone/teste/@@agenda/c24d15bd-fdf8-411c-bffc-67b36b68be16&gt;,
 'root': &lt;Application at &gt;,
 'template': &lt;Products.Five.browser.pagetemplatefile.ViewPageTemplateFile object at 0xb3793b6c&gt;,
 'traverse_subpath': [],
 'user': &lt;SpecialUser 'Anonymous User'&gt;,
 'view': &lt;Products.Five.metaclass.AgendaTile object at 0xb1baa1ec&gt;,
 'views': &lt;Products.Five.browser.pagetemplatefile.ViewMapper object at 0xb1baa8cc&gt;}</pre></li>

<li>  Module zope.tales.expressions, line 217, in __call__</li>

<li>  Module Products.PageTemplates.Expressions, line 155, in _eval</li>

<li>  Module Products.PageTemplates.Expressions, line 117, in render</li>

<li>  Module brasil.gov.agenda.tiles.agenda, line 135, in period</li>

<li>  Module brasil.gov.agenda.tiles.agenda, line 94, in _last_modified</li>

</ul><p>AttributeError: 'NoneType' object has no attribute 'modified'
</p></p>
  <hr noshade="noshade"/>

  <p>Troubleshooting Suggestions</p>

  <ul>
  <li>The URL may be incorrect.</li>
  <li>The parameters passed to this resource may be incorrect.</li>
  <li>A resource that this resource relies on may be
      encountering an error.</li>
  </ul>

  <p>For more detailed information about the error, please
  refer to the error log.
  </p>

  <p>If the error persists please contact the site maintainer.
  Thank you for your patience.
  </p>

Minha pergunta é: Qual deve ser o comportamente quando removo uma Agenda associdada à uma Title Agenda? Deveria ser removido o link, como é feito pela tile de notícias?

[hvelarde]

o problema está nesta linha: https://github.com/plonegovbr/brasil.gov.agenda/blob/master/src/brasil/gov/agenda/tiles/agenda.py#L93

como o objeto foi apagado uuidToObject retorna None; o certo seria depender o menos possível do objeto original na hora do render; o tile deve continuar mostrando a informação do objeto, mesmo sem ele existir.

[idgserpro]

@hvelarde o problema é que essa informação é a data da modificação. Ou seja ela é dinâmica.

[hvelarde]

@idgserpro pode retornar um string vazio nesse caso.

[idgserpro]

o tile deve continuar mostrando a informação do objeto, mesmo sem ele existir.

Relacionado: collective/collective.cover#589 (comment)