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annotate sat_website/templatetags/utils.py @ 37:c570778a7620

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add adhesion.html (needs some change)
author souliane <souliane@mailoo.org>
date Tue, 27 Jan 2015 08:17:55 +0100
parents 9d553570cc61
children a18800261cf6
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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 register = template.Library()
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4
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5 @register.filter
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6 def is_tuple(value):
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7 """Tell if this value is a tuple or not.
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8
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9 @param value (obj): any object
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10 @return: True if value is a tuple
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11 """
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12 # XXX: we would like to have is_type with an argument instead, but it would
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13 # rely on a strange comparison - isinstance(value, arg) doesn't work here
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14 return type(value) == tuple
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16 @register.filter
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17 def is_radio(value):
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18 """Tell if this value is a RadioSelect or not.
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19
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20 @param value (obj): any object
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21 @return: True if value is a RadioSelect
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22 """
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23 return type(value) == RadioSelect
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25 @register.filter
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26 def is_checkbox(value):
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27 """Tell if this value is a CheckboxInput or not.
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29 @param value (obj): any object
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30 @return: True if value is a CheckboxInput
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31 """
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32 return type(value) == CheckboxInput
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34 @register.filter
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35 def selected_label(select):
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36 """Return the label of the single selected option.
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38 @param select: a BoundField object bound to a Select with single choice.
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39 @return: unicode
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40 """
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41 for value, label in select.field.choices:
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42 if value == select.value():
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43 return label
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44 return None
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45
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46 @register.filter
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47 def buffer(value, n):
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48 """Split values in sub-lists of n elements.
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49
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50 @param value (list): a list object
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51 @return: a list containing sub-lists
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52
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53 For example:
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54
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55 >>> buffer(range(10), 2)
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56 [[0, 1], [2, 3], [4, 5], [6, 7], [8, 9]]
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58 >>> buffer(range(10), 3)
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59 [[0, 1, 2], [3, 4, 5], [6, 7, 8], [9]]
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60
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61 >>> buffer(range(10), 4)
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62 [[0, 1, 2, 3], [4, 5, 6, 7], [8, 9]]
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63 """
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64 result = []
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65 index = 0
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66 while index < len(value):
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67 result.append(value[index:index + n])
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68 index += n
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69 return result