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module Effective
module EffectiveDatatable
module Cookie
MAX_COOKIE_SIZE = 2500 # String size. Real byte size is about 1.5 times bigger.
def cookie
@cookie
end
def cookie_name
@cookie_name ||= (
if datatables_ajax_request?
view.params[:cookie]
else
[self.class, attributes].hash.to_s.last(12)
end
)
end
private
def load_cookie!
@dt_cookie = view.cookies.signed['_effective_dt']
# Load global datatables cookie
if @dt_cookie.present?
@dt_cookie = Marshal.load(Base64.decode64(@dt_cookie))
raise 'invalid datatables cookie' unless @dt_cookie.kind_of?(Array)
# Assign individual cookie
index = @dt_cookie.rindex { |name, _| name == cookie_name }
@cookie = @dt_cookie.delete_at(index) if index
end
# Load my individual cookie
if @cookie.kind_of?(Array)
@cookie = initial_state.keys.zip(@cookie.second).to_h
end
end
def save_cookie!
@dt_cookie ||= []
@dt_cookie << [cookie_name, cookie_payload]
while @dt_cookie.to_s.size > MAX_COOKIE_SIZE
@dt_cookie.shift((@dt_cookie.length / 3) + 1)
end
view.cookies.signed['_effective_dt'] = Base64.encode64(Marshal.dump(@dt_cookie))
end
def cookie_payload
payload = state.except(:attributes)
# Turn visible into a bitmask. This is undone in load_columns!
payload[:visible] = (
if columns.keys.length < 63 # 64-bit integer
columns.keys.map { |name| (2 ** columns[name][:index]) if state[:visible][name] }.compact.sum
end
)
# Just store the values
[attributes.delete_if { |k, v| v.nil? }] + payload.values
end
end
end
end
Version data entries
19 entries across 19 versions & 1 rubygems