'Active storage problem - replacing pictures

I'm using:
ruby 2.6
rails 6.1.4
devise
devise_token_auth
active-storage usingl locally disk service

I'm creating api in which I can storage and upload pictures. I can upload pic via Insomnia but problem is when I want to add second image to the same user. Image is just replacing.

user.rb

# frozen_string_literal: true

class User < ActiveRecord::Base  
  
  def initialize
    self.pictures = []
  end

  extend Devise::Models #added this line to extend devise model
  # Include default devise modules. Others available are:
  # :lockable, :timeoutable, :trackable and :omniauthable
  devise :database_authenticatable, :registerable,
        :recoverable, :rememberable, :validatable, :confirmable
  include DeviseTokenAuth::Concerns::User

  VALID_USERNAME_REGEX= /^(?![_.])(?!.*[_.]{2})[a-zA-Z0-9._]+(?<![_.])$/ix
  validates :username, presence: true, length: {minimum:3, maximum:26},
            format: { with: VALID_USERNAME_REGEX, :multiline => true,
            message: :invalid_username }
  validate :password_complexity

  attr_accessor :pictures

  has_many_attached :pictures
  validates :pictures, content_type: ['image/png', 'image/jpg', 'image/jpeg'],
            size: { less_than: 5.megabytes , message: :invalid_size }

  def password_complexity
    return if password.blank? || password =~ /^((?!.*[\s]))/
    errors.add :password, :invalid_password
  end
end

application_controller.rb

class ApplicationController < ActionController::API
  include DeviseTokenAuth::Concerns::SetUserByToken

  before_action :configure_permitted_parameters, if: :devise_controller?

  protected
    def configure_permitted_parameters        
      devise_parameter_sanitizer.permit(:account_update, keys: [:pictures, :username, :email])
    end
end

All controllers which I use are default from devise_token_auth. I found tip to add in config/application.rb

 config.active_storage.replace_on_assign_to_many = false

but after that I'm always getting status 500

insomnia error

ruby-on-railsrubyapirails-activestorage


Solution 1:[1]

Did you add an array to the parameter so you can store multiple image ?

def configure_permitted_parameters        
      devise_parameter_sanitizer.permit(:account_update, keys: [:pictures [], :username, :email])
    end

Solution 2:[2]

I solved a similar problem by adding this to the config/environment/development.rb (as per the Rails Guide):

config.active_storage.replace_on_assign_to_many = false

Good luck!

Sources

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Source: Stack Overflow

Solution Source
Solution 1
Solution 2 iRex

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