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August 29, 2015 14:23
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Rails 4 permit params DSL
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def method_missing(symbol, *args, &block) | |
p "Start method_missing from #{self} at #{symbol}" | |
return unless symbol.to_s.start_with?('permit_params_from_') | |
object = symbol.to_s.sub('permit_params_from_', '') | |
context = [] | |
def context.method_missing(symbol, &block_b) | |
p "Start context from #{self} at #{symbol}" | |
second_context = [] | |
def second_context.method_missing(symbol) | |
self << symbol | |
end | |
if block_given? | |
second_context.instance_eval(&block_b) | |
self << Hash[symbol, second_context] | |
else | |
self << symbol | |
end | |
p "Finish context from #{self} at #{symbol}" | |
end | |
context.instance_eval(&block) | |
p "Finish from #{self} at #{symbol}" | |
command = "params.require(#{object.to_sym}).permit(#{context})" | |
p command | |
puts context.inspect | |
end | |
permit_params_from_product_server do | |
id | |
name | |
sku | |
email do | |
username | |
server | |
end | |
home | |
number | |
serial_number | |
image | |
end |
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Output: