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Ruby Rails Routes and Resources Routes to Create Actions Route for New Pages

Posted by Derek Lin
Derek Lin
1,563 Points

new can have an id? how can new have an id?

why would the rails app match the new even though it's not an object, specifically, what is rails doing and looking for when it looks for an id in a url parameter?

why would /pages/new --> /pages/:id

2 Answers

Christopher Durheim
Christopher Durheim
1,582 Points

An important thing to remember is that Rails processes the routes.rb file in order of the route declarations. Once a match is found, Rails stops looking for other matches and processes the route with the matched controller action.

In the initial example in the video, the /pages/new url was matching the /pages/:id route because /pages/:id will match any URL that has /pages/ followed by a string.

Typically, we'd want this string to be a number corresponding to the id in the database for the pages model, but technically the routing in rails will match any string

Based on this, we need to put the route for /pages/new before the /pages/:id route in the file so it gets triggered first.

yvesramos
yvesramos
12,816 Points
yvesramos
yvesramos
12,816 Points

I still have some doubt with this. Can someone explain what his both do?

get '/pages/:id' to: 'pages#show', as: 'page' and get '/pages/new', to: 'pages#new'

Thanks