Rails 4.2.6 Problems with maintaining JSON Postgresql

[Avante]

Strong Parametrs:

params.require(:author).permit(:firstname, :secondname, :patronymic, :position, :data)

Field data - has a type JSON, OBD - PG

If retained/renewed, the field remains empty

I tried to write:

  props = params.require(:author).permit(:firstname, :secondname, :patronymic, :position, :data)
  props[:data] = params[:author][:data]

And so:

  props = params.require(:author).permit(:firstname, :secondname, :patronymic, :position, :data)
  props[:data] = params[:author][:data].to_hash

Trying to make an association, and naturally nothing works. I sold an envelope to json, but it's still a line:

  props = params.require(:author).permit(:firstname, :secondname, :patronymic, :position, :data)
  props[:data] = params[:author][:data].to_json

The postgres is the type of data.

It's a lot to choose in the control room. But there is a need to store data, with dynamic fields and a sample.

Thank you for your help!

[esther]

Such cases http://guides.rubyonrails.org/action_controller_overview.html#outside-the-scope-of-strong-parameters ♪

If you know the permitted keys in advance. Scales (single values, kashmaps and masses) not() In the Hashmap invested, you may indicate clearly:

params.require(:author)
      .permit(:firstname, :secondname, :patronymic, :position,
              data: [:one, :two, :three])

...and if you don't, and you just want to say anything, then Strong Parameters isn't your assistant anymore. He's invented for typical cases where there's a white list of keys. So you're gonna have to squeeze the results of his job, make a sample of the keys you know, and then throw in the data files that you don't care about. For example:

author = params.require(:author)
author.permit(:firstname, :secondname, :patronymic, :position)

.merge(author.slice(:data)) # <= "выщипывает" ключ-значение только для :data
^^^^^ как обычный Hash#merge

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For reasons of comment: Remember what's for json operator = No. Therefore, search for a whole field data I won't work. find_or_create♪ https://ru.stackoverflow.com/questions/503916/rails-validates-uniqueness-%D0%B4%D0%BB%D1%8F-postgresql-json-type Nowhere. It exists. jsonbbut it's a different story.