Rails 5 – assign model attribute and save

Question

I've got a problem with assigning some value to model attribute and save it. I've tried a lot of ways, but none worked.

@rating = Rating.new(rating_params)
@rating.save
@rating.update_attribute(:ip_address, request.remote_ip)

or

@rating = Rating.new(rating_params)
@rating.ip_address = request.remote_ip
@rating.save

Nothing is working for me :-( Everytime I got NULL in my database for column ip_address

add ! to `@rating.save` like this `@rating.save!` you will get the error — Julien TASSIN, Feb 07 '18 at 19:17
Are you sure that `request.remote_ip` is not returning `nil`? Try adding `p "request.remote_ip is #{request.remote_ip}"` to your code before you attempt to assign it, and see what the logs show. — moveson, Feb 07 '18 at 19:17
@moveson I'm sure that request.remote_ip is not nil, because I'm printing it to console and there it is :-) "request.remote_ip is 127.0.0.1" — ketysek, Feb 07 '18 at 19:24
Can you use "save!" or "update_attributes!" methods? Then look at your console to see if there's an error. — Hamdi Bayhan, Feb 07 '18 at 19:54
Does the _#save_ method return `true`or `false`? (After assigning the _ip_address_.) — 3limin4t0r, Feb 07 '18 at 20:05
@user3216673 Did you add `ip_address` on your `rating_params`? Can you show your `rating_params` method? — oj5th, Feb 08 '18 at 01:34

score 0 · Answer 1 · answered Feb 07 '18 at 20:34

Solution to debug in this situation.

@rating = Rating.new(rating_params)
@rating.ip_address = request.remote_ip

#check is't valid to save: true || false
@rating.valid?

# if false, print error messages
p @rating.errors
p @rating.errors.full_messages

#either way you can try save without validation.
@rating.save(:validate => false)

Also, What data type of column ip_address. You can't save integer into string or vice versa.

remote_ip by default string class, if want to save as integer.

Convert String Ip-address to Integer

Rails 5 – assign model attribute and save

1 Answers1