Ruby on Rails - Failed to create new user: Validation failed - ruby-on-rails

Question

On creating a new user using postman, I'm getting the following error:
Failed to create new user: Validation failed: First name can't be blank, Email can't be blank, Email is invalid; Params: {:email=>nil, :first_name=>nil, :last_name=>nil, :plan=>"Basic", :role=>"requester_readonly", :phone_number=>nil, :ip=>nil, :company_name=>nil, :product_id=>2, :user_reference_id=>nil, :handle=>nil}
Error on postman:
{
"error": [
"First name can't be blank",
"Email can't be blank",
"Email is invalid"
],
"status": 400
}
I am passing the following values to params in postman:
{
"email": "customer#yahoo.com",
"firstName": "Demo",
"lastName": "Customer",
"password": "Password_0",
"phoneNumber": "0123456789",
"ip": "10.10.2.125",
"company": "xyz"
}
This is the function for user registration:
def register
product_id = $product_id
if params[:plan]
#plan = AppCommon::Plan.where(name: params[:plan], product_id: product_id).first
end
#plan = #plan || AppCommon::Plan.find_default(product_id)
form_params = {email: params[:email], first_name: params[:firstName], last_name: params[:lastName], password: params[:password], plan: #plan.name, role: 'requester_readonly', phone_number: params[:phoneNumber], ip: params[:ip], company_name: params[:company], product_id: product_id, user_reference_id: params[:referenceId]}
service = Web::UserCreater.new(form_params)
result = service.perform
#user = service.user
if result.success?
render json: {status: 200, authentication_token: #user.authentication_token}
else
error_response(#user.errors.full_messages.to_a)
end
end

Answer 1

probably the ruby on rails controllers are wrapping the params under a name https://api.rubyonrails.org/classes/ActionController/ParamsWrapper.html
you can either turn it off by setting wrap_parameters false on the top of your controller but I do not advise on this!
you could probably print/log the entire params to see how they look like and probably permit them
pull form_params into its own method require the param wrapper then permit what you need
def form_params
params.require(:user).permit(:email, :first_name, :last_name, :password, :phone_number, :ip, :company_name, :user_reference_id)
end
then in your method get these params then merge the defaults:
user_creater_attributes = form_params.merge(product_id: product_id, plan: #plan.name, role: 'requester_readonly')