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Add test to make custom renderer macros for projects.

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Add documentation
This commit is contained in:
Fatih Kadir Akın 2015-12-18 10:34:26 +02:00
parent 7b85aa2b45
commit 2d4edc83dc
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42
docs/views.md
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@ -13,3 +13,45 @@ And you should have an `hello.ecr` view. It will have the same context as the me
```erb
Hello <%= env.params["name"] %>
```
## Using Layouts
You can use **layouts** in Kemal. You should pass a second argument.
```crystal
get '/:name' do
render "views/subview.ecr", "views/layouts/layout.ecr"
end
```
And you should use `content` variable (like `yield` in Rails) in layout file.
```erb
<html>
<head>
<title><%= $title %></title>
</head>
<body>
<%= content %>
</body>
</html>
```
## Using Common Paths
Since Crystal does not allow using variables in macro literals, you need to generate
another *helper macro* to make the code easier to read and write.
```crystal
macro my_renderer(filename)
render "my/app/view/base/path/#{{{filename}}}.ecr", "my/app/view/base/path/layouts/layout.ecr"
end
```
And now you can use your new renderer.
```crystal
get '/:name' do
my_renderer "subview"
end
```

14
spec/view_spec.cr
View file

@ -1,5 +1,9 @@
require "./spec_helper"
macro render_with_base_and_layout(filename)
render "spec/asset/#{{{filename}}}", "spec/asset/layout.ecr"
end
describe "Views" do
it "renders file" do
kemal = Kemal::Handler.new
@ -11,6 +15,16 @@ describe "Views" do
response.body.should contain("Hello world")
end
it "renders file with dynamic variables" do
kemal = Kemal::Handler.new
kemal.add_route "GET", "/view/:name" do |env|
render_with_base_and_layout "hello.ecr"
end
request = HTTP::Request.new("GET", "/view/world")
response = kemal.call(request)
response.body.should contain("Hello world")
end
it "renders layout" do
kemal = Kemal::Handler.new
kemal.add_route "GET", "/view/:name" do |env|