Sha256: 18f9290a7de058be6201a81cd38eb126971b3efd0945c7b90974a4a8fd21c1dc
Contents?: true
Size: 1.4 KB
Versions: 6
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Stored size: 1.4 KB
Contents
# A bare-bones renderer for React.js + Exec.js
# - No Rails dependency
# - No browser concerns
module React
module ServerRendering
class ExecJSRenderer
def initialize(options={})
js_code = options[:code] || raise("Pass `code:` option to instantiate a JS context!")
@context = ExecJS.compile(GLOBAL_WRAPPER + js_code)
end
def render(component_name, props, prerender_options)
render_function = prerender_options.fetch(:render_function, "renderToString")
js_code = <<-JS
(function () {
#{before_render(component_name, props, prerender_options)}
var result = React.#{render_function}(React.createElement(#{component_name}, #{props}));
#{after_render(component_name, props, prerender_options)}
return result;
})()
JS
@context.eval(js_code).html_safe
rescue ExecJS::ProgramError => err
raise React::ServerRendering::PrerenderError.new(component_name, props, err)
end
# Hooks for inserting JS before/after rendering
def before_render(component_name, props, prerender_options); ""; end
def after_render(component_name, props, prerender_options); ""; end
# Handle Node.js & other ExecJS contexts
GLOBAL_WRAPPER = <<-JS
var global = global || this;
var self = self || this;
var window = window || this;
JS
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems