to_param(method_name = nil)
Instance Public methods
Defines your model's to_param method to generate âprettyâ
URLs using method_name, which can be any attribute or method
that responds to to_s.
1 2 3 4 5 6 7 | class User < ActiveRecord::Base to_param :nameenduser = User.find_by(name: 'Fancy Pants')user.id # => 123user_path(user) # => "/users/123-fancy-pants" |
Values longer than 20 characters will be truncated. The value is truncated word by word.
1 2 3 | user = User.find_by(name: 'David HeinemeierHansson')user.id # => 125user_path(user) # => "/users/125-david" |
Because the generated param begins with the record's id,
it is suitable for passing to find. In a controller, for
example:
1 2 | params[:id] # => "123-fancy-pants"User.find(params[:id]).id # => 123 |
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