Can Rails ActiveRecord #save method be used to update an existing record?
103174
how does activerecord know to perform an insert or update?
45766
What is scope/named_scope in rails?
94118
Programmatically update a field's value
9687
Fastest way to determine if record exists
67878
In a django model custom save() method, how should you identify a new object?
122501
Why does upsert cause a DUPLICATE_VALUE error?
50477
Why does attr_accessor clobber the existing variables in this model in Ruby on Rails?
85102
What hook can I use for post-save actions?
45519
Best Practices for reusing code between controllers in Ruby on Rails
107263
Why saving changes to a database fails?
70775
Rails: How can I set default values in ActiveRecord?
43784
Workarounds for Sites page to update standard object?
78694
Rails ActiveRecord where or clause
109240
Javascript validation using activerecord models validators
30986
Combine two ActiveRecord::Relation objects
135259
How do you copy a record in a SQL table but swap out the unique id of the new row?
88194
Confusion about passing instance variables to redirect_to method. As seen in Rails Guides