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annotate piecrust/data/paginationdata.py @ 852:4850f8c21b6e

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core: Start of the big refactor for PieCrust 3.0. * Everything is a `ContentSource`, including assets directories. * Most content sources are subclasses of the base file-system source. * A source is processed by a "pipeline", and there are 2 built-in pipelines, one for assets and one for pages. The asset pipeline is vaguely functional, but the page pipeline is completely broken right now. * Rewrite the baking process as just running appropriate pipelines on each content item. This should allow for better parallelization.
author Ludovic Chabant <ludovic@chabant.com>
date Wed, 17 May 2017 00:11:48 -0700
parents a12ad254176e
children f070a4fc033c
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1 import time
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2 import logging
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3 from piecrust.data.pagedata import LazyPageConfigData
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6 logger = logging.getLogger(__name__)
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8
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9 class PaginationData(LazyPageConfigData):
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10 def __init__(self, qualified_page):
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11 super(PaginationData, self).__init__(qualified_page.page)
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12 self._qualified_page = qualified_page
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14 def _load(self):
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15 from piecrust.uriutil import split_uri
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16
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17 page = self._page
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18 dt = page.datetime
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19 page_url = self._qualified_page.uri
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20 _, slug = split_uri(page.app, page_url)
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21 self._setValue('url', page_url)
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22 self._setValue('slug', slug)
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23 self._setValue(
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24 'timestamp',
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25 time.mktime(page.datetime.timetuple()))
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26 self._setValue('datetime', {
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27 'year': dt.year, 'month': dt.month, 'day': dt.day,
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28 'hour': dt.hour, 'minute': dt.minute, 'second': dt.second})
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29 date_format = page.app.config.get('site/date_format')
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30 if date_format:
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31 self._setValue('date', page.datetime.strftime(date_format))
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32 self._setValue('mtime', page.path_mtime)
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33
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34 assetor = page.source.buildAssetor(page, page_url)
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35 self._setValue('assets', assetor)
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36
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37 segment_names = page.config.get('segments')
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38 for name in segment_names:
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39 self._mapLoader(name, self._load_rendered_segment)
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41 def _load_rendered_segment(self, data, name):
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42 do_render = True
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43 stack = self._page.app.env.render_ctx_stack
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44 if stack.hasPage(self._page):
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45 # This is the pagination data for the page that is currently
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46 # being rendered! Inception! But this is possible... so just
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47 # prevent infinite recursion.
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48 do_render = False
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49
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50 assert self is data
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52 if do_render:
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53 uri = self._qualified_page.uri
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54 try:
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55 from piecrust.rendering import (
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56 RenderingContext, render_page_segments)
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57 ctx = RenderingContext(self._qualified_page)
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58 render_result = render_page_segments(ctx)
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59 segs = render_result.segments
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60 except Exception as ex:
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61 logger.exception(ex)
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62 raise Exception(
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63 "Error rendering segments for '%s'" % uri) from ex
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64 else:
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65 segs = {}
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66 for name in self._page.config.get('segments'):
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67 segs[name] = "<unavailable: current page>"
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68
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69 for k, v in segs.items():
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70 self._unmapLoader(k)
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71 self._setValue(k, v)
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72
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73 if 'content.abstract' in segs:
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74 self._setValue('content', segs['content.abstract'])
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75 self._setValue('has_more', True)
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76 if name == 'content':
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77 return segs['content.abstract']
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78
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79 return segs[name]
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80