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annotate sat_website/templatetags/utils.py @ 83:3d04a955bec4

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add membership campaign's video (for now ogv, will eventually change to webm)
author souliane <souliane@mailoo.org>
date Mon, 15 Jun 2015 13:52:10 +0200
parents a18800261cf6
children 5de2a3dd4e67
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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
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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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16
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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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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 metadata(data):
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74 """Return a string representation of a metadata dict.
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75
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76 @param data (dict{__proxy__: unicode}): metadata dictionnary
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77 @return: unicode
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78 """
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79 if not data:
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80 return ""
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81 lang = get_language()
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82 sep = ugettext_lazy(': ')
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83 items = ["%s%s%s" % (key.translate(lang), sep, value) for key, value in data.iteritems()]
83
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84 return replace_language_tag("(%s)" % ', '.join(items))
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85
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86 @register.filter
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87 def replace_language_tag(text):
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88 """Replace {{LANGUAGE_CODE}} by the current language code.
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89
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90 @param text (unicode): text to process
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91 @return: unicode
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92 """
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93 return text.replace("{{LANGUAGE_CODE}}", get_language())