CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-5.2
user2012677
user2012677

Reputation: 5735

Rails set dynamic method value

I get an error trying to set a User model value using send. What is the correct method to use?

SyntaxError ((irb):22: syntax error, unexpected '=', expecting end-of-input)

User.first.send(:first_name)="John"

Upvotes: 0

Views: 779

Answers (2)

user2012677
user2012677

Reputation: 5735

Figured out a much easier method.

User.first[:first_name] = "John"

Upvotes: 1

ray
ray

Reputation: 5552

Use public_send when you want to dynamically infer a method name and call it, yet still don't want to have encapsulation issues.

user = User.first
user.public_send(:first_name=, 'Ray')

Perhaps send will also work in above code but not recommended in most of cases.

User.first.public_send(:first_name=, 'Ray') will be useless as you are assigning value to User object and this setter method do not save value.
Your object is not stored in any reference so you will lost object on which you have performed setter operation for first_name.

Take it in variable like user & then do such operations so you will have track, so later you can save user object and also you can view what changes you made for that variable

Upvotes: 4

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