fresh_when(record_or_options, additional_options = {})
Instance Public methods
Sets the etag, last_modified, or both on the response and
renders a 304 Not Modified response if the request is already
fresh.
Parameters:
-
:etag. -
:last_modified. -
:publicBy default the Cache-Control header is private, set this totrueif you want your application to be cachable by other devices (proxy caches).
Example:
1 2 3 4 | def show @article = Article.find(params[:id]) fresh_when(etag: @article, last_modified: @article.created_at, public: true)end |
This will render the show template if the request isn't sending a
matching etag or If-Modified-Since header and just a 304 Not
Modified response if there's a match.
You can also just pass a record where last_modified will be
set by calling updated_at and the etag by passing the object
itself.
1 2 3 4 | def show @article = Article.find(params[:id]) fresh_when(@article)end |
When passing a record, you can still set whether the public header:
1 2 3 4 | def show @article = Article.find(params[:id]) fresh_when(@article, public: true)end |
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