Error occurred while parsing request parameters. - Rails API

Question

so im passing a post method on the "charge" method i have but i keep getting 400 bad request.

This is the route and the input json:

POST http://localhost:3000/users/:user_id/accounts/:account_id/credit_card/:credit_card_id/charge'
Content-Type: application/json

{
"created": "8526798985", 
"amount": "2000",
"currency": "usd",
}

And this is the charge method:

  def charge
    transaction = Transaction.new(transaction_params)  
    transaction.credit_card_id = @credit_card.id
    if transaction.valid?
      transaction.save
      new_transaction = { id: transaction.id, created: transaction.created, status: transaction.status, amount: transaction.amount.to_i, currency: transaction.currency, credit_card_id: transaction.credit_card_id }
      render json: new_transaction
    else
      error_json = { error: "Invalid inputs" }
      render json: error_json, status: 400
    end
  end

also this is the transaction_params method

  def transaction_params
  params.require(:transaction).permit(:created, :amount, :currency)
  end

The error

Error occurred while parsing request parameters.
Contents:

{
"created": "8526798985",
"amount": "2000",
"currency": "usd",
}

What am i missing here? I did another api and this worked fine

Your JSON does not have the transaction node required as a wrapper per your transaction_params — engineersmnky
– engineersmnky, Commented Jan 11, 2021 at 19:25
You should use if transaction.save instead of .valid? as the later does not ensure that the record was actually saved. — max
– max, Commented Jan 11, 2021 at 19:49

kykyi · Accepted Answer · 2021-01-12 08:14:17Z

1

Your strong params is expecting:

{
  "transaction: {
    {
      "created": "8526798985", 
      "amount": "2000",
      "currency": "usd",
    }
  }
}

But you are providing it:

{
  "created": "8526798985", 
  "amount": "2000",
  "currency": "usd",
}

One solution would be to change the way the request body is put together on your front end, or you can update your transaction_params to read:

def transaction_params
  params.permit(:created, :amount, :currency)
end

answered Jan 12, 2021 at 8:14

kykyi

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