Mercurial > piecrust2

annotate piecrust/dataproviders/blog.py @ 1165:a928ee22c20a

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cm: Upgrade Jinja2 version.
author Ludovic Chabant <ludovic@chabant.com>
date Fri, 04 Oct 2019 09:00:57 -0700
parents c5f1936e9e89
children
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rev   line source
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1 import time
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2 import collections.abc
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3 from piecrust.dataproviders.base import DataProvider
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4 from piecrust.dataproviders.pageiterator import PageIterator
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5 from piecrust.sources.list import ListSource
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6 from piecrust.sources.taxonomy import Taxonomy
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7
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8
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9 class BlogDataProvider(DataProvider, collections.abc.Mapping):
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10 PROVIDER_NAME = 'blog'
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11
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12 debug_render_doc = """Provides a list of blog posts and yearly/monthly
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13 archives."""
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14 debug_render_dynamic = (['_debugRenderTaxonomies'] +
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15 DataProvider.debug_render_dynamic)
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16
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17 def __init__(self, source, page):
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18 super().__init__(source, page)
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19 self._posts = None
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20 self._yearly = None
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21 self._monthly = None
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22 self._taxonomies = {}
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23 self._archives_built = False
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24 self._ctx_set = False
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25
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26 def _addSource(self, source):
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27 raise Exception("The blog data provider doesn't support "
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28 "combining multiple sources.")
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29
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30 @property
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31 def posts(self):
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32 self._buildPosts()
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33 # Reset each time on access in case a page is showing 2 different
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34 # lists of the same blog.
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35 self._posts.reset()
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36 return self._posts
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37
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38 @property
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39 def years(self):
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40 self._buildArchives()
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41 return self._yearly
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42
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43 @property
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44 def months(self):
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45 self._buildArchives()
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46 return self._monthly
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47
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48 @property
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49 def taxonomies(self):
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50 return list(self._app.config.get('site/taxonomies').keys())
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51
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52 def __getitem__(self, name):
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53 if name in ['posts', 'years', 'months', 'taxonomies']:
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54 return getattr(self, name)
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55
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56 self._buildArchives()
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57 return self._taxonomies[name]
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58
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59 def __getattr__(self, name):
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60 self._buildArchives()
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61 try:
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62 return self._taxonomies[name]
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63 except KeyError:
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64 raise AttributeError("No such taxonomy: %s" % name)
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65
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66 def __len__(self):
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67 return 4 + len(self.taxonomies)
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68
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69 def __iter__(self):
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70 yield 'posts'
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71 yield 'years'
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72 yield 'months'
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73 yield 'taxonomies'
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74 yield from self.taxonomies
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75
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76 def _debugRenderTaxonomies(self):
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77 return self.taxonomies
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78
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79 def _buildPosts(self):
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80 if self._posts is None:
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81 it = PageIterator(self._sources[0], current_page=self._page)
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82 self._onIteration()
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83 self._posts = it
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84
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85 def _buildArchives(self):
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86 if self._archives_built:
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87 return
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88
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89 yearly_index = {}
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90 monthly_index = {}
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91 tax_index = {}
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92
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93 taxonomies = []
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94 tax_names = list(self._app.config.get('site/taxonomies').keys())
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95 for tn in tax_names:
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96 tax_cfg = self._app.config.get('site/taxonomies/' + tn)
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97 taxonomies.append(Taxonomy(tn, tax_cfg))
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98 tax_index[tn] = {}
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99
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100 page = self._page
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101 source = self._sources[0]
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102
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103 for post in source.getAllPages():
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104 post_dt = post.datetime
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105
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106 year = post_dt.year
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107 month = (post_dt.month, post_dt.year)
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108
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109 posts_this_year = yearly_index.get(year)
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110 if posts_this_year is None:
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111 timestamp = time.mktime(
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112 (post_dt.year, 1, 1, 0, 0, 0, 0, 0, -1))
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113 posts_this_year = BlogArchiveEntry(
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114 source, page, year, timestamp)
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115 yearly_index[year] = posts_this_year
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116 posts_this_year._items.append(post.content_item)
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117
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118 posts_this_month = monthly_index.get(month)
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119 if posts_this_month is None:
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120 timestamp = time.mktime(
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121 (post_dt.year, post_dt.month, 1,
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122 0, 0, 0, 0, 0, -1))
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123 posts_this_month = BlogArchiveEntry(
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124 source, page, month[0], timestamp)
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125 monthly_index[month] = posts_this_month
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126 posts_this_month._items.append(post.content_item)
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127
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diff changeset
128 for tax in taxonomies:
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129 post_term = post.config.get(tax.setting_name)
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130 if post_term is None:
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131 continue
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132
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133 posts_this_tax = tax_index[tax.name]
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134 if tax.is_multiple:
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135 for val in post_term:
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136 entry = posts_this_tax.get(val)
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137 if entry is None:
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138 entry = BlogTaxonomyEntry(source, page, val)
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139 posts_this_tax[val] = entry
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140 entry._items.append(post.content_item)
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141 else:
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142 entry = posts_this_tax.get(val)
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143 if entry is None:
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144 entry = BlogTaxonomyEntry(source, page, post_term)
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145 posts_this_tax[val] = entry
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146 entry._items.append(post.content_item)
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147
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148 self._yearly = list(sorted(
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149 yearly_index.values(),
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150 key=lambda e: e.timestamp, reverse=True))
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151 self._monthly = list(sorted(
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152 monthly_index.values(),
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153 key=lambda e: e.timestamp, reverse=True))
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154
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155 self._taxonomies = {}
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156 for tax_name, entries in tax_index.items():
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157 self._taxonomies[tax_name] = list(
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158 sorted(entries.values(), key=lambda i: i.term))
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159
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diff changeset
160 self._onIteration()
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161
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162 self._archives_built = True
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163
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164 def _onIteration(self):
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165 if not self._ctx_set:
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166 rcs = self._app.env.render_ctx_stack
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167 if rcs.current_ctx:
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168 rcs.current_ctx.addUsedSource(self._sources[0])
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169 self._ctx_set = True
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170
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171
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172 class BlogArchiveEntry:
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173 debug_render = ['name', 'timestamp', 'posts']
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174 debug_render_invoke = ['name', 'timestamp', 'posts']
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175
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176 def __init__(self, source, page, name, timestamp):
853
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177 self.name = name
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178 self.timestamp = timestamp
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179 self._source = source
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180 self._page = page
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diff changeset
181 self._items = []
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182 self._iterator = None
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183
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184 def __str__(self):
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45ad976712ec tests: Big push to get the tests to pass again.
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185 return str(self.name)
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186
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187 def __int__(self):
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188 return int(self.name)
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189
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diff changeset
190 @property
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191 def posts(self):
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192 self._load()
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diff changeset
193 self._iterator.reset()
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194 return self._iterator
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195
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196 def _load(self):
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197 if self._iterator is not None:
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198 return
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diff changeset
199
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diff changeset
200 src = ListSource(self._source, self._items)
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diff changeset
201 self._iterator = PageIterator(src, current_page=self._page)
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202
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203
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diff changeset
204 class BlogTaxonomyEntry:
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diff changeset
205 debug_render = ['name', 'post_count', 'posts']
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diff changeset
206 debug_render_invoke = ['name', 'post_count', 'posts']
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diff changeset
207
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diff changeset
208 def __init__(self, source, page, term):
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diff changeset
209 self.term = term
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diff changeset
210 self._source = source
853
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diff changeset
211 self._page = page
857
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diff changeset
212 self._items = []
853
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213 self._iterator = None
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214
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diff changeset
215 def __str__(self):
857
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diff changeset
216 return self.term
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217
f070a4fc033c core: Continue PieCrust3 refactor, simplify pages.
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diff changeset
218 @property
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219 def name(self):
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diff changeset
220 return self.term
853
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221
f070a4fc033c core: Continue PieCrust3 refactor, simplify pages.
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diff changeset
222 @property
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diff changeset
223 def posts(self):
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diff changeset
224 self._load()
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parents:
diff changeset
225 self._iterator.reset()
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parents:
diff changeset
226 return self._iterator
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parents:
diff changeset
227
f070a4fc033c core: Continue PieCrust3 refactor, simplify pages.
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parents:
diff changeset
228 @property
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diff changeset
229 def post_count(self):
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diff changeset
230 return len(self._items)
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parents:
diff changeset
231
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parents:
diff changeset
232 def _load(self):
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parents:
diff changeset
233 if self._iterator is not None:
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parents:
diff changeset
234 return
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parents:
diff changeset
235
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diff changeset
236 src = ListSource(self._source, self._items)
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diff changeset
237 self._iterator = PageIterator(src, current_page=self._page)
853
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parents:
diff changeset
238