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1 try: |
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2 from functools import wraps |
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3 except ImportError: |
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4 from django.utils.functional import wraps # Python 2.3, 2.4 fallback. |
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5 |
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6 from django.utils.cache import patch_vary_headers |
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7 |
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8 def vary_on_headers(*headers): |
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9 """ |
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10 A view decorator that adds the specified headers to the Vary header of the |
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11 response. Usage: |
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12 |
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13 @vary_on_headers('Cookie', 'Accept-language') |
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14 def index(request): |
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15 ... |
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16 |
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17 Note that the header names are not case-sensitive. |
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18 """ |
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19 def decorator(func): |
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20 def inner_func(*args, **kwargs): |
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21 response = func(*args, **kwargs) |
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22 patch_vary_headers(response, headers) |
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23 return response |
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24 return wraps(func)(inner_func) |
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25 return decorator |
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26 |
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27 def vary_on_cookie(func): |
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28 """ |
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29 A view decorator that adds "Cookie" to the Vary header of a response. This |
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30 indicates that a page's contents depends on cookies. Usage: |
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31 |
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32 @vary_on_cookie |
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33 def index(request): |
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34 ... |
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35 """ |
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36 def inner_func(*args, **kwargs): |
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37 response = func(*args, **kwargs) |
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38 patch_vary_headers(response, ('Cookie',)) |
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39 return response |
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40 return wraps(func)(inner_func) |