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annotate sat_website/templatetags/utils.py @ 90:5de2a3dd4e67

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change VideoDesc attribute path to paths, a dict where you can specify a different path for each language
author souliane <souliane@mailoo.org>
date Tue, 16 Jun 2015 17:23:15 +0200
parents 3d04a955bec4
children 9ae3d9c8b28a
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1 from django import template
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2 from django.forms import RadioSelect, CheckboxInput
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3 from django.utils.translation import get_language, ugettext_lazy as _
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4 register = template.Library()
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5
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6 @register.filter
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7 def is_tuple(value):
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8 """Tell if this value is a tuple or not.
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9
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10 @param value (obj): any object
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11 @return: True if value is a tuple
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12 """
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13 # XXX: we would like to have is_type with an argument instead, but it would
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14 # rely on a strange comparison - isinstance(value, arg) doesn't work here
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15 return type(value) == tuple
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17 @register.filter
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18 def is_radio(value):
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19 """Tell if this value is a RadioSelect or not.
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20
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21 @param value (obj): any object
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22 @return: True if value is a RadioSelect
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23 """
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24 return type(value) == RadioSelect
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25
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26 @register.filter
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27 def is_checkbox(value):
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28 """Tell if this value is a CheckboxInput or not.
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29
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30 @param value (obj): any object
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31 @return: True if value is a CheckboxInput
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32 """
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33 return type(value) == CheckboxInput
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34
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35 @register.filter
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36 def selected_label(select):
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37 """Return the label of the single selected option.
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38
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39 @param select: a BoundField object bound to a Select with single choice.
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40 @return: unicode
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41 """
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42 for value, label in select.field.choices:
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43 if value == select.value():
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44 return label
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45 return None
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46
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47 @register.filter
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48 def buffer(value, n):
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49 """Split values in sub-lists of n elements.
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50
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51 @param value (list): a list object
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52 @return: a list containing sub-lists
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53
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54 For example:
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55
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56 >>> buffer(range(10), 2)
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57 [[0, 1], [2, 3], [4, 5], [6, 7], [8, 9]]
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58
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59 >>> buffer(range(10), 3)
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60 [[0, 1, 2], [3, 4, 5], [6, 7, 8], [9]]
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61
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62 >>> buffer(range(10), 4)
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63 [[0, 1, 2, 3], [4, 5, 6, 7], [8, 9]]
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64 """
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65 result = []
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66 index = 0
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67 while index < len(value):
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68 result.append(value[index:index + n])
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69 index += n
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70 return result
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71
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72 @register.filter
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73 def select_video_path(paths):
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74 """Return the video path matching the current language.
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75
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76 @param paths (dict): dict of video paths.
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77 @return: unicode
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78 """
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79 lang = get_language()
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80 if lang in paths:
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81 return paths[lang]
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82 return paths.values()[0]
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83
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84 @register.filter
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85 def metadata(entry):
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86 """Return a string representation of the video metadata.
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87
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88 @param entry (VideoDesc): video entry
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89 @return: unicode
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90 """
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91 sep = _(': ')
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92 lang = get_language()
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93
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94 def get_item(key, value):
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95 return "%s%s%s" % (key, sep, value)
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96 items = [get_item(key.translate(lang), value) for key, value in entry.data.iteritems()]
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97 try:
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98 lang_key = _(u"language").translate(lang)
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99 lang_value = lang if lang in entry.paths else entry.paths.keys()[0]
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100 items.append(get_item(lang_key, lang_value))
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101 except AttributeError:
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102 pass
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103 return "(%s)" % ', '.join(items)