Created
December 18, 2014 21:47
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Crystal Layouts with ECR
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| macro embed_ecr(filename, io_name) | |
| \{{ run("ecr/process", {{filename}}, {{io_name}}) }} | |
| end | |
| macro ecr_file(filename) | |
| def to_s(__io__, section = nil) | |
| embed_ecr {{filename}}, "__io__" | |
| end | |
| def to_s(__io__, &block) | |
| embed_ecr {{filename}}, "__io__" | |
| end | |
| def to_s | |
| String.build do |io| | |
| to_s(io) do | |
| yield io | |
| end | |
| end | |
| end | |
| end |
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| require "ecr/macros" | |
| class Layout | |
| ecr_file "layout.ecr" | |
| def render(view, io) | |
| to_s(io) do |section| | |
| view.to_s(io, section) | |
| end | |
| end | |
| end | |
| class View | |
| macro content_for(section) | |
| if section == {{section}} | |
| {{yield}} | |
| return | |
| end | |
| end | |
| macro render_partial(ecr_name) | |
| embed_ecr {{ecr_name}}, "__io__" | |
| end | |
| end | |
| class Foo < View | |
| ecr_file "foo.ecr" | |
| def initialize(@name) | |
| end | |
| end | |
| foo = Foo.new "world" | |
| layout = Layout.new | |
| layout.render(foo, STDOUT) |
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| <% content_for(:header) do %> | |
| <title>Foo</title> | |
| <% end %> | |
| <% render_partial "partial.ecr" %> |
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| <html> | |
| <header> | |
| <% yield :header %> | |
| </header> | |
| <body> | |
| <% yield %> | |
| </body> | |
| </html> |
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| <div>Hello <%= @name %></div> |
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