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require 'ostruct'
class Gon
module Base
VALID_OPTION_DEFAULTS = {
namespace: 'gon',
camel_case: false,
camel_depth: 1,
watch: false,
need_tag: true,
type: false,
cdata: true,
global_root: 'global',
namespace_check: false,
amd: false,
nonce: nil
}
class << self
def render_data(options = {})
_o = define_options(options)
script = formatted_data(_o)
script = Gon::Escaper.escape_unicode(script)
script = Gon::Escaper.javascript_tag(script, _o.type, _o.cdata, _o.nonce) if _o.need_tag
script.html_safe
end
private
def define_options(options)
_o = OpenStruct.new
VALID_OPTION_DEFAULTS.each do |opt_name, default|
_o.send("#{opt_name}=", options.fetch(opt_name, default))
end
_o.watch = options[:watch] || !Gon.watch.all_variables.empty?
_o.cameled = _o.camel_case
_o
end
def formatted_data(_o)
script = ''
before, after = render_wrap(_o)
script << before
script << gon_variables(_o.global_root).
map { |key, val| render_variable(_o, key, val) }.join
script << (render_watch(_o) || '')
script << after
script
end
def render_wrap(_o)
if _o.amd
["define('#{_o.namespace}',[],function(){var gon={};", 'return gon;});']
else
before = \
if _o.namespace_check
"window.#{_o.namespace}=window.#{_o.namespace}||{};"
else
"window.#{_o.namespace}={};"
end
[before, '']
end
end
def render_variable(_o, key, value)
js_key = convert_key(key, _o.cameled)
if _o.amd
"gon['#{js_key}']=#{to_json(value, _o.camel_depth)};"
else
"#{_o.namespace}.#{js_key}=#{to_json(value, _o.camel_depth)};"
end
end
def render_watch(_o)
if _o.watch and Gon::Watch.all_variables.present?
if _o.amd
Gon.watch.render_amd
else
Gon.watch.render
end
end
end
def to_json(value, camel_depth)
# starts at 2 because 1 is the root key which is converted in the formatted_data method
Gon::JsonDumper.dump convert_hash_keys(value, 2, camel_depth)
end
def convert_hash_keys(value, current_depth, max_depth)
return value if current_depth > (max_depth.is_a?(Symbol) ? 1000 : max_depth)
case value
when Hash
Hash[value.map { |k, v|
[ convert_key(k, true), convert_hash_keys(v, current_depth + 1, max_depth) ]
}]
when Enumerable
value.map { |v| convert_hash_keys(v, current_depth + 1, max_depth) }
else
value
end
end
def gon_variables(global_root)
data = {}
if Gon.global.all_variables.present?
if global_root.blank?
data = Gon.global.all_variables
else
data[global_root.to_sym] = Gon.global.all_variables
end
end
data.merge(Gon.all_variables)
end
def convert_key(key, camelize)
cache = RequestStore.store[:gon_keys_cache] ||= {}
cache["#{key}_#{camelize}"] ||= camelize ? key.to_s.camelize(:lower) : key.to_s
end
end
end
end
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