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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.
18 lines
915 B
Ruby
18 lines
915 B
Ruby
require 'abstract_unit'
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class FixtureResolverTest < ActiveSupport::TestCase
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def test_should_return_empty_list_for_unknown_path
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resolver = ActionView::FixtureResolver.new()
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templates = resolver.find_all("path", "arbitrary", false, {:locale => [], :formats => [:html], :variants => [], :handlers => []})
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assert_equal [], templates, "expected an empty list of templates"
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end
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def test_should_return_template_for_declared_path
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resolver = ActionView::FixtureResolver.new("arbitrary/path.erb" => "this text")
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templates = resolver.find_all("path", "arbitrary", false, {:locale => [], :formats => [:html], :variants => [], :handlers => [:erb]})
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assert_equal 1, templates.size, "expected one template"
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assert_equal "this text", templates.first.source
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assert_equal "arbitrary/path", templates.first.virtual_path
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assert_equal [:html], templates.first.formats
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end
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end
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