Ruby on Rails - .where with an array in ruby on rails- ruby on rails tutorial - rails guides - rails tutorial - ruby rails
The where method on any ActiveRecord model can be used to generate SQL of the form WHERE column_name IN (a, b, c, ...). This is achieved by passing an array as argument.
Example
class Person < ActiveRecord::Base
#attribute :first_name, :string
#attribute :last_name, :string
end
people = Person.where(first_name: ['Mark', 'Mary'])
people.to_sql # "SELECT * FROM people WHERE first_name IN ('Mark', 'Mary')"Clicking "Copy Code" button will copy the code into the clipboard - memory. Please paste(Ctrl+V) it in your destination. The code will get pasted. Happy coding from Wikitechy - ruby on rails tutorial - rails guides - ruby rails - rubyonrails - learn ruby on rails - team
class Person < ActiveRecord::Base
#attribute :first_name, :string
#attribute :last_name, :string
end
people = Person.where(first_name: ['Mark', 'Mary'])
people.to_sql # "SELECT * FROM people WHERE first_name IN ('Mark', 'Mary')"Clicking "Copy Code" button will copy the code into the clipboard - memory. Please paste(Ctrl+V) it in your destination. The code will get pasted. Happy coding from Wikitechy - ruby on rails tutorial - rails guides - ruby rails - rubyonrails - learn ruby on rails - team
- If the array contains a nil, the SQL will be modified to check if the column is null:
people = Person.where(first_name: ['Mark', 'Mary', nil])
people.to_sql # "SELECT * FROM people WHERE first_name IN ('Mark', 'Mary') OR first_name IS NULL"