Models, Databases, Relationships in Rails What is the difference between a primary key and a foreign key? a primary key is the id of the current table, a foreign key is the id of a different table Where would we find a primary key? in the id field of the table
Introduction to Sinatra 1. What is the purpose of the server file (routing)? The server file contains the routing information for what to do and what to display when different requests are recieved. 2. How do you pass variables into the views? Throw your stuff into an instance variable, or pass it in using hash syntax, "new var name (for use in view)" => "what you want to pass to the view" 3. How can we interpolate ruby into a view (html)?