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annotate piecrust/dataproviders/blog.py @ 1070:a013a3bea22a

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cm: Upgrade release script.
author Ludovic Chabant <ludovic@chabant.com>
date Tue, 13 Feb 2018 23:37:59 -0800
parents 57283302b3ee
children d464c1b1d686
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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._montly
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47
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48 def __getitem__(self, name):
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49 self._buildArchives()
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50 return self._taxonomies[name]
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51
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52 def __getattr__(self, name):
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53 self._buildArchives()
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54 try:
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55 return self._taxonomies[name]
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56 except KeyError:
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57 raise AttributeError("No such taxonomy: %s" % name)
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58
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59 def __iter__(self):
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60 self._buildPosts()
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61 self._buildArchives()
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62 return ['posts', 'years', 'months'] + list(
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63 sorted(self._taxonomies.keys()))
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64
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65 def __len__(self):
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66 self._buildPosts()
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67 self._buildArchives()
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68 return 3 + len(self._taxonomies)
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69
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70 def _debugRenderTaxonomies(self):
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71 return list(self._app.config.get('site/taxonomies').keys())
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72
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73 def _buildPosts(self):
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74 if self._posts is None:
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75 it = PageIterator(self._sources[0], current_page=self._page)
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76 self._onIteration()
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77 self._posts = it
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78
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79 def _buildArchives(self):
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80 if self._archives_built:
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81 return
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82
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83 yearly_index = {}
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84 monthly_index = {}
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85 tax_index = {}
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86
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87 taxonomies = []
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88 tax_names = list(self._app.config.get('site/taxonomies').keys())
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89 for tn in tax_names:
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90 tax_cfg = self._app.config.get('site/taxonomies/' + tn)
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91 taxonomies.append(Taxonomy(tn, tax_cfg))
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92 tax_index[tn] = {}
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93
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94 page = self._page
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95 source = self._sources[0]
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96
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97 for post in source.getAllPages():
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98 post_dt = post.datetime
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99
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100 year = post_dt.year
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101 month = (post_dt.month, post_dt.year)
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102
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103 posts_this_year = yearly_index.get(year)
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104 if posts_this_year is None:
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105 timestamp = time.mktime(
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106 (post_dt.year, 1, 1, 0, 0, 0, 0, 0, -1))
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107 posts_this_year = BlogArchiveEntry(
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108 source, page, year, timestamp)
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109 yearly_index[year] = posts_this_year
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110 posts_this_year._items.append(post.content_item)
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111
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112 posts_this_month = monthly_index.get(month)
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113 if posts_this_month is None:
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114 timestamp = time.mktime(
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115 (post_dt.year, post_dt.month, 1,
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116 0, 0, 0, 0, 0, -1))
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117 posts_this_month = BlogArchiveEntry(
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118 source, page, month[0], timestamp)
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119 monthly_index[month] = posts_this_month
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120 posts_this_month._items.append(post.content_item)
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121
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122 for tax in taxonomies:
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123 post_term = post.config.get(tax.setting_name)
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124 if post_term is None:
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125 continue
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126
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127 posts_this_tax = tax_index[tax.name]
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128 if tax.is_multiple:
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129 for val in post_term:
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130 entry = posts_this_tax.get(val)
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131 if entry is None:
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132 entry = BlogTaxonomyEntry(source, page, val)
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133 posts_this_tax[val] = entry
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134 entry._items.append(post.content_item)
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135 else:
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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, post_term)
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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
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142 self._yearly = list(sorted(
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143 yearly_index.values(),
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144 key=lambda e: e.timestamp, reverse=True))
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145 self._monthly = list(sorted(
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146 monthly_index.values(),
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147 key=lambda e: e.timestamp, reverse=True))
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148
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149 self._taxonomies = {}
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150 for tax_name, entries in tax_index.items():
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151 self._taxonomies[tax_name] = list(
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152 sorted(entries.values(), key=lambda i: i.term))
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153
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154 self._onIteration()
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155
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156 self._archives_built = True
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157
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158 def _onIteration(self):
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159 if not self._ctx_set:
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160 rcs = self._app.env.render_ctx_stack
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161 if rcs.current_ctx:
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162 rcs.current_ctx.addUsedSource(self._sources[0])
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163 self._ctx_set = True
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164
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165
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166 class BlogArchiveEntry:
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167 debug_render = ['name', 'timestamp', 'posts']
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168 debug_render_invoke = ['name', 'timestamp', 'posts']
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169
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170 def __init__(self, source, page, name, timestamp):
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171 self.name = name
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172 self.timestamp = timestamp
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173 self._source = source
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174 self._page = page
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175 self._items = []
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176 self._iterator = None
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177
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178 def __str__(self):
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179 return str(self.name)
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180
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181 def __int__(self):
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182 return int(self.name)
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183
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184 @property
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185 def posts(self):
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186 self._load()
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187 self._iterator.reset()
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188 return self._iterator
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189
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190 def _load(self):
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191 if self._iterator is not None:
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192 return
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193
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diff changeset
194 src = ListSource(self._source, self._items)
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195 self._iterator = PageIterator(src, current_page=self._page)
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196
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197
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198 class BlogTaxonomyEntry:
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199 debug_render = ['name', 'post_count', 'posts']
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200 debug_render_invoke = ['name', 'post_count', 'posts']
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201
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202 def __init__(self, source, page, term):
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diff changeset
203 self.term = term
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diff changeset
204 self._source = source
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205 self._page = page
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206 self._items = []
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207 self._iterator = None
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208
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209 def __str__(self):
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diff changeset
210 return self.term
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211
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diff changeset
212 @property
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213 def name(self):
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diff changeset
214 return self.term
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215
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diff changeset
216 @property
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217 def posts(self):
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218 self._load()
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diff changeset
219 self._iterator.reset()
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diff changeset
220 return self._iterator
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parents:
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221
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diff changeset
222 @property
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diff changeset
223 def post_count(self):
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diff changeset
224 return len(self._items)
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diff changeset
225
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diff changeset
226 def _load(self):
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diff changeset
227 if self._iterator is not None:
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diff changeset
228 return
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diff changeset
229
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diff changeset
230 src = ListSource(self._source, self._items)
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diff changeset
231 self._iterator = PageIterator(src, current_page=self._page)
853
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parents:
diff changeset
232