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Rails destroy_all cancel

 2 years ago
source link: https://www.codesd.com/item/rails-destroy-all-cancel.html
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Rails destroy_all cancel

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I've accidentally erased all the records from one my model.

Model.destroy_all

For the output I've received a large list for all the records that have been destroyed.

=> [#<Model id: 1, some_attribute: "Hello World">, #<Model id: 2, some_attribute: " Hello World 2">, etc etc etc]

But, I've got it a text. Can I do anything, using IRB, to return the records back ?

This is very, VERY urgent! Any help is appreciated.

Thank you so much

The following script should do the trick:

require 'bigdecimal'

str = "#<Model id: 1, some_attribute: #<BigDecimal:4ba0730,'0.0',9(18)>, another_attribute: \"Hello World\">, #<Model id: 2, some_attribute: \" Hello World 2\">"

str.scan(/#?<(\w+) (.+?)>(?=, #|$)/) do |m|
    model = Object.const_get(m[0])
    m[1].gsub!(/#<BigDecimal:.+?('.+?').+?>/, "BigDecimal.new(\\1)")
    eval("model.create(#{m[1]})")
end

This also handles instances of BigDecimal. In case you need to handle other special types you can just add another call to gsub!.


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