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?_ttl= parameter and default_cache_ttl config

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Refs #285, Closes #289
This commit is contained in:
Simon Willison 2018-05-26 15:17:33 -07:00
commit b463f60158
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5 changed files with 39 additions and 1 deletions
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12
datasette/views/base.py
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@ -257,7 +257,17 @@ class BaseView(RenderMixin):
r.status = status_code
# Set far-future cache expiry
if self.ds.cache_headers:
r.headers["Cache-Control"] = "max-age={}".format(365 * 24 * 60 * 60)
ttl = request.args.get("_ttl", None)
if ttl is None or not ttl.isdigit():
ttl = self.ds.config["default_cache_ttl"]
else:
ttl = int(ttl)
if ttl == 0:
ttl_header = 'no-cache'
else:
ttl_header = 'max-age={}'.format(ttl)
r.headers["Cache-Control"] = ttl_header
r.headers["Referrer-Policy"] = "no-referrer"
return r
async def custom_sql(