Mercurial > piecrust2

annotate piecrust/sources/base.py @ 1078:a6618fdab37e

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sources: Fix some invalid relationship name.
author Ludovic Chabant <ludovic@chabant.com>
date Thu, 15 Feb 2018 21:15:13 -0800
parents 8adc27285d93
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 import logging
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2 import collections
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3 from werkzeug.utils import cached_property
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5
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6 # Source realms, to differentiate sources in the site itself ('User')
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7 # and sources in the site's theme ('Theme').
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8 REALM_USER = 0
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9 REALM_THEME = 1
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10 REALM_NAMES = {
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11 REALM_USER: 'User',
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12 REALM_THEME: 'Theme'}
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14
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15 # Types of relationships a content source can be asked for.
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16 REL_PARENT_GROUP = 1
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17 REL_LOGICAL_PARENT_ITEM = 2
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18 REL_LOGICAL_CHILD_GROUP = 3
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19 REL_ASSETS = 10
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22 logger = logging.getLogger(__name__)
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24
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25 class SourceNotFoundError(Exception):
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26 pass
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28
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29 class InsufficientRouteParameters(Exception):
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30 pass
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33 class AbortedSourceUseError(Exception):
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34 pass
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36
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37 class GeneratedContentException(Exception):
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38 pass
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40
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41 CONTENT_TYPE_PAGE = 0
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42 CONTENT_TYPE_ASSET = 1
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44
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45 class ContentItem:
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46 """ Describes a piece of content.
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47
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48 Some known metadata that PieCrust will use include:
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49 - `date`: A `datetime.date` object that will set the date of the page.
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50 - `datetime`: A `datetime.datetime` object that will set the date and
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51 time of the page.
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52 - `route_params`: A dictionary of route parameters to generate the
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53 URL to the content.
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54 - `config`: A dictionary of configuration settings to merge into the
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55 settings found in the content itself.
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56 """
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57 def __init__(self, spec, metadata):
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58 self.spec = spec
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59 self.metadata = metadata
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60
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61 @property
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62 def is_group(self):
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63 return False
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65
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66 class ContentGroup:
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67 """ Describes a group of `ContentItem`s.
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68 """
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69 def __init__(self, spec, metadata):
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70 self.spec = spec
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71 self.metadata = metadata
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72
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73 @property
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74 def is_group(self):
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75 return True
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76
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78 class ContentSource:
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79 """ A source for content.
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80 """
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81 SOURCE_NAME = None
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82 DEFAULT_PIPELINE_NAME = None
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83
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84 def __init__(self, app, name, config):
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85 self.app = app
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86 self.name = name
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87 self.config = config or {}
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88 self._cache = None
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89 self._page_cache = None
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91 @property
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92 def is_theme_source(self):
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93 return self.config['realm'] == REALM_THEME
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94
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95 @cached_property
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96 def route(self):
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97 return self.app.getSourceRoute(self.name)
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98
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99 def openItem(self, item, mode='r', **kwargs):
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100 raise NotImplementedError()
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101
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102 def getItemMtime(self, item):
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103 raise NotImplementedError()
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104
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105 def getAllPages(self):
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106 if self._page_cache is not None:
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107 return self._page_cache
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108
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109 getter = self.app.getPage
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110 self._page_cache = [getter(self, i) for i in self.getAllContents()]
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111 return self._page_cache
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112
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113 def getAllContents(self):
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114 if self._cache is not None:
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115 return self._cache
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116
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117 cache = []
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118 stack = collections.deque()
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119 stack.append(None)
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120 while len(stack) > 0:
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121 cur = stack.popleft()
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122 try:
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123 contents = self.getContents(cur)
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124 except GeneratedContentException:
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125 continue
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126 if contents is not None:
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127 for c in contents:
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Ludovic Chabant <ludovic@chabant.com>
parents: 840
diff changeset
128 if c.is_group:
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Ludovic Chabant <ludovic@chabant.com>
parents: 840
diff changeset
129 stack.append(c)
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Ludovic Chabant <ludovic@chabant.com>
parents: 840
diff changeset
130 else:
871
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 866
diff changeset
131 cache.append(c)
504ddb370df8 refactor: Fixing some issues with baking assets.
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parents: 866
diff changeset
132 self._cache = cache
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 866
diff changeset
133 return cache
318
ac9b94c8fb37 internal: Add utility function to get a page from a source.
Ludovic Chabant <ludovic@chabant.com>
parents: 299
diff changeset
134
852
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
Ludovic Chabant <ludovic@chabant.com>
parents: 840
diff changeset
135 def getContents(self, group):
932
0eca08213354 sources: Give better exception messages when a class is missing a method.
Ludovic Chabant <ludovic@chabant.com>
parents: 905
diff changeset
136 raise NotImplementedError(
0eca08213354 sources: Give better exception messages when a class is missing a method.
Ludovic Chabant <ludovic@chabant.com>
parents: 905
diff changeset
137 "'%s' doesn't implement 'getContents'." % self.__class__)
852
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
Ludovic Chabant <ludovic@chabant.com>
parents: 840
diff changeset
138
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
Ludovic Chabant <ludovic@chabant.com>
parents: 840
diff changeset
139 def getRelatedContents(self, item, relationship):
932
0eca08213354 sources: Give better exception messages when a class is missing a method.
Ludovic Chabant <ludovic@chabant.com>
parents: 905
diff changeset
140 raise NotImplementedError(
0eca08213354 sources: Give better exception messages when a class is missing a method.
Ludovic Chabant <ludovic@chabant.com>
parents: 905
diff changeset
141 "'%s' doesn't implement 'getRelatedContents'." % self.__class__)
852
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
Ludovic Chabant <ludovic@chabant.com>
parents: 840
diff changeset
142
989
8adc27285d93 bake: Big pass on bake performance.
Ludovic Chabant <ludovic@chabant.com>
parents: 986
diff changeset
143 def findContentFromSpec(self, spec):
932
0eca08213354 sources: Give better exception messages when a class is missing a method.
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parents: 905
diff changeset
144 raise NotImplementedError(
989
8adc27285d93 bake: Big pass on bake performance.
Ludovic Chabant <ludovic@chabant.com>
parents: 986
diff changeset
145 "'%s' doesn't implement 'findContentFromSpec'." % self.__class__)
866
d9059257743c refactor: Make the linker work again.
Ludovic Chabant <ludovic@chabant.com>
parents: 862
diff changeset
146
989
8adc27285d93 bake: Big pass on bake performance.
Ludovic Chabant <ludovic@chabant.com>
parents: 986
diff changeset
147 def findContentFromRoute(self, route_params):
932
0eca08213354 sources: Give better exception messages when a class is missing a method.
Ludovic Chabant <ludovic@chabant.com>
parents: 905
diff changeset
148 raise NotImplementedError(
989
8adc27285d93 bake: Big pass on bake performance.
Ludovic Chabant <ludovic@chabant.com>
parents: 986
diff changeset
149 "'%s' doesn't implement 'findContentFromRoute'." % self.__class__)
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
150
792
58ebf50235a5 routing: Simplify how routes are defined.
Ludovic Chabant <ludovic@chabant.com>
parents: 711
diff changeset
151 def getSupportedRouteParameters(self):
932
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Ludovic Chabant <ludovic@chabant.com>
parents: 905
diff changeset
152 raise NotImplementedError(
0eca08213354 sources: Give better exception messages when a class is missing a method.
Ludovic Chabant <ludovic@chabant.com>
parents: 905
diff changeset
153 "'%s' doesn't implement 'getSupportedRouteParameters'." %
0eca08213354 sources: Give better exception messages when a class is missing a method.
Ludovic Chabant <ludovic@chabant.com>
parents: 905
diff changeset
154 self.__class__)
792
58ebf50235a5 routing: Simplify how routes are defined.
Ludovic Chabant <ludovic@chabant.com>
parents: 711
diff changeset
155
852
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
Ludovic Chabant <ludovic@chabant.com>
parents: 840
diff changeset
156 def prepareRenderContext(self, ctx):
824
e01473c3ea7e Allow page source to post-process page config at the end of page loading
Ben Artin <ben@artins.org>
parents: 792
diff changeset
157 pass
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
158
852
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
Ludovic Chabant <ludovic@chabant.com>
parents: 840
diff changeset
159 def onRouteFunctionUsed(self, route_params):
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Ludovic Chabant <ludovic@chabant.com>
parents: 840
diff changeset
160 pass
826
7f235e65ef5d Allow PageSource to provide a custom assetor
Ben Artin <ben@artins.org>
parents: 792
diff changeset
161
852
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
Ludovic Chabant <ludovic@chabant.com>
parents: 840
diff changeset
162 def describe(self):
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
Ludovic Chabant <ludovic@chabant.com>
parents: 840
diff changeset
163 return None
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
Ludovic Chabant <ludovic@chabant.com>
parents: 840
diff changeset
164