保存到数据库中，但在Ruby on Rails中检查http请求之前

Question

I am trying save hashes to my database but before I want check request I am using

require 'net/http'
gem 'http'

This is my controller (hashes I call :hammer)

class PaymentsController < ApplicationController
  before_action :logged_in_user, only: [:create]

  def create
    @payment = current_user.payments.build(payment_params)
    aza = ''
    uri = URI("https://blockexplorer.com/api/tx/#{:hammer}")
    res = Net::HTTP::Post.new(uri)
    res1 = res.class.name
    aza += Net::HTTP.get(uri)
    @go = aza
    if aza.include?( '3MGeicHK6P2pUpepsXyTiuA7omMbRZbZx3') #'"addresses":["3MGeicHK6P2pUpepsXyTiuA7omMbRZbZx3"]'
      if aza.include? '"value":"0.03072025"'
        if aza.include? '"confirmations":0'
          flash[:info] = "Wait 15 minutes for confirm"
        else
          if @payment.save
            flash[:success] = "You paid"
            redirect_to root_url
          else
            render 'welcome/index'
          end
        end
      else
        flash[:danger] = "You paid less"
      end
    else
      flash[:danger] = "#{res1}"
      redirect_to root_url
    end
  end

  def destroy
  end

  private

  def payment_params
    params.require(:payment).permit(:hammer)
  end
end

When I was try to save it is not check, it is just show error 400 But If I use console it is work

uri = URI("https://blockexplorer.com/api/tx/f484f14ebf9726ab2ab46ffc491786db50fc69ceff737620122e51559a3ea379")
irb(main):003:0> Net::HTTP.get(uri)

Answer 1

I find want can to do

      @test = payment_params[:hammer]
   #   hammer = ''
   #   hammer += params[:hammer].to_s
      aza = ''
      uri = URI("https://blockexplorer.com/api/tx/#{@test}")

Answer 2

I think the bug is there:

uri = URI("https://blockexplorer.com/api/tx/#{:hammer}")

in PaymentsController. Try that instead:

uri = URI("https://blockexplorer.com/api/tx/#{params[:hammer]}")

You missed params[] in your interpolation.