Difference between modelname.new and modelname.create in rails?

Question

When I am using the Rails console I can type either:

Paper.new(name: "deva", body: "testing")
Paper.create(name: "deva", body: "testing")

and it seems like the same result. What exactly is the difference between .new and .create?

score 2 · Answer 1 · answered Jul 23 '15 at 13:45

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aa = Paper.new(name: "deva",body: "testing") In the above case you have to do do .save then only it will generate the id for that record if is valid data, else it will do roll back and it not stored in database.

and here you also can add more field which is in your data table like aa.contact_no = "1234" aa.save

Paper.create(name: "deva",body: "testing") In this case it will try to create the record at the same time and go through the validations.

answered Jul 23 '15 at 13:45

Sudhir

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while i'm adding datas like aa.contact_no = "1234" will it store the data in Paper database? – Devux Jul 23 '15 at 13:57
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if it has that data field in the table. or after that you have to do aa.save – Sudhir Jul 24 '15 at 04:11

score 1 · Answer 2 · answered Jul 23 '15 at 13:29

1

new only initialize the object and do not save the object in the database

create initializes as well as save it if all validations are met.

for help see this: http://apidock.com/rails/ActiveRecord/Base/create/class

answered Jul 23 '15 at 13:29

Athar

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if we using .new method we want to use .save method to store data in database right? – Devux Jul 23 '15 at 13:36
yes you have to call explicitly `.save` on that object to save it. – Athar Jul 23 '15 at 13:37

Difference between modelname.new and modelname.create in rails?

2 Answers2