Mercurial > piecrust2

annotate piecrust/data/paginationdata.py @ 548:785dea918ad8

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debug: Fix a crash when rendering debug info for some pages.
author Ludovic Chabant <ludovic@chabant.com>
date Sun, 02 Aug 2015 23:01:59 -0700
parents 32c7c2d219d2
children ab5c6a8ae90a
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1 import time
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2 from piecrust.data.assetor import Assetor
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3 from piecrust.data.pagedata import LazyPageConfigData
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4 from piecrust.routing import create_route_metadata
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5 from piecrust.uriutil import split_uri
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6
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7
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8 class PaginationData(LazyPageConfigData):
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9 def __init__(self, page):
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10 super(PaginationData, self).__init__(page)
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11 self._route = None
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12 self._route_metadata = None
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13
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14 def _get_uri(self):
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15 page = self._page
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16 if self._route is None:
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17 # TODO: this is not quite correct, as we're missing parts of the
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18 # route metadata if the current page is a taxonomy page.
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19 route_metadata = create_route_metadata(page)
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20 self._route = page.app.getRoute(page.source.name, route_metadata)
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21 self._route_metadata = route_metadata
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22 if self._route is None:
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23 raise Exception("Can't get route for page: %s" % page.path)
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24 return self._route.getUri(self._route_metadata)
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25
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26 def _load(self):
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27 page = self._page
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28 page_url = self._get_uri()
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29 _, slug = split_uri(page.app, page_url)
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30 self._setValue('url', page_url)
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31 self._setValue('slug', slug)
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32 self._setValue(
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33 'timestamp',
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34 time.mktime(page.datetime.timetuple()))
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35 date_format = page.app.config.get('site/date_format')
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36 if date_format:
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37 self._setValue('date', page.datetime.strftime(date_format))
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38 self._setValue('mtime', page.path_mtime)
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39
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40 assetor = Assetor(page, page_url)
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41 self._setValue('assets', assetor)
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42
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43 segment_names = page.config.get('segments')
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44 for name in segment_names:
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45 self._mapLoader(name, self._load_rendered_segment)
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46
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47 def _load_rendered_segment(self, data, name):
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48 do_render = True
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49 eis = self._page.app.env.exec_info_stack
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50 if eis is not None and eis.hasPage(self._page):
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51 # This is the pagination data for the page that is currently
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52 # being rendered! Inception! But this is possible... so just
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53 # prevent infinite recursion.
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54 do_render = False
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55
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56 assert self is data
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57
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58 if do_render:
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59 uri = self._get_uri()
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60 try:
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61 from piecrust.rendering import (
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62 QualifiedPage, PageRenderingContext,
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63 render_page_segments)
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64 qp = QualifiedPage(self._page, self._route,
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65 self._route_metadata)
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66 ctx = PageRenderingContext(qp)
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67 render_result = render_page_segments(ctx)
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68 segs = render_result.segments
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69 except Exception as e:
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70 raise Exception(
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71 "Error rendering segments for '%s'" % uri) from e
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72 else:
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73 segs = {}
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74 for name in self._page.config.get('segments'):
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75 segs[name] = "<unavailable: current page>"
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76
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77 for k, v in segs.items():
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78 self._unmapLoader(k)
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79 self._setValue(k, v)
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80
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81 if 'content.abstract' in segs:
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82 self._setValue('content', segs['content.abstract'])
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83 self._setValue('has_more', True)
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84 if name == 'content':
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85 return segs['content.abstract']
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86
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87 return segs[name]
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88