Simpler Way to Add a new Field to Object in Rails

Question

I have a field in animal_food (a json object) called treats and I want to add a field in treats called time_eaten and then return everything from the field treats.

 def addTime(time)
    animal_food["treats"]["time_eaten"] = time
    animal_food["treats"]
  end

Is there a way I can do the code above in 1 line (using merge or other ruby syntax?)

Amadan · Accepted Answer · 2020-02-14 04:50:25Z

2

Yes:

animal_food['treats'].merge!({'time_eaten' => time})

does the same thing as those two lines. (Note the exclamation mark.) You could also say

animal_food['treats'].tap { |treats| treats['time_eaten'] = time }

Or, in Ruby 2.7 preview, using numbered parameters:

animal_food['treats'].tap { @1['time_eaten'] = time }

edited Feb 14, 2020 at 4:50

answered Feb 14, 2020 at 4:43

Amadan

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