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Avoid one-liner conditionals when they are too big. Avoid concatenating
strings to build error messages. Improve messages a bit.
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By default, variants in the templates will be picked up if a variant is set
and there's a match. The format will be:
app/views/projects/show.html.erb
app/views/projects/show.html+tablet.erb
app/views/projects/show.html+phone.erb
If request.variant = :tablet is set, we'll automatically be rendering the
html+tablet template.
In the controller, we can also tailer to the variants with this syntax:
class ProjectsController < ActionController::Base
def show
respond_to do |format|
format.html do |html|
@stars = @project.stars
html.tablet { @notifications = @project.notifications }
html.phone { @chat_heads = @project.chat_heads }
end
format.js
format.atom
end
end
end
The variant itself is nil by default, but can be set in before filters, like
so:
class ApplicationController < ActionController::Base
before_action do
if request.user_agent =~ /iPad/
request.variant = :tablet
end
end
end
This is modeled loosely on custom mime types, but it's specifically not
intended to be used together. If you're going to make a custom mime type,
you don't need a variant. Variants are for variations on a single mime
types.
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Fix ActionDispatch::Request#formats on xhr requests when HTTP_ACCEPT
header is empty string. About issue #7774, same fix as in commit bebb02f
but for xhr requests.
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in a prioritized order
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requests. Closes #2119
An xhr request must have an "Accept" or "Content-type" header in order to be considered a request with valid_accept_header.
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Signed-off-by: José Valim <jose.valim@gmail.com>
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leading */* and comma
Signed-off-by: José Valim <jose.valim@gmail.com>
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has ....,*/* .
It is possible to a device to send
request such that */* appear at the beginning of the
"Accept" header. This patch ensures that "Accept" header
is ignored for such cases too.
Signed-off-by: José Valim <jose.valim@gmail.com>
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application/json, application/jsonp (and the like), but still blacklists browsers. Essentially, we use normal content negotiation unless you include */* in your list, in which case we assume you're a browser and send HTML [#3541 state:resolved]
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Rack::Request expect
it to return a String. Split the Rails API so that Request#content_type returns
a String, and Request#content_mime_type returns a Mime::Type object.
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