Routing with Parameters in Ruby on Rails

Question

I'm new to rails, and I'm struggling with handling the routing correctly. Right now I have a link called "details," and when the user clicks on it I would like the method "view_details" (within the pages controller) to be called with a location parameter that I'm passing in:

<%= link_to "Details", :controller => "pages", :action => "view_details", 
:location =>  v["coordinates"]%>

In my routes.rb file, I have:

get 'pages/view_details/:location', to: 'pages#view_details'

I am getting the following error: No route matches [GET] "/pages/view_details/latitude=37.3505570824247&longitude=-121.922104884669"

When I rake routes, I see this (with no prefix):

How can I fix this?

can you share the rake routes output?, what is prefix of the routes? — buncis
– buncis, Commented Jul 26, 2017 at 3:59

Gerry · Accepted Answer · 2017-07-26 04:37:13Z

3

The problem is that you are passing a hash as a value for location parameter so, instead of just adding one parameter (i.e. location), it adds two parameters (i.e. latitud and longitude) and your routing fails.

To fix this you could set your route without location, like this:

get 'pages/view_details', to: 'pages#view_details'

Now, using the same link you have now, you will receive latitud and longitude parameters grouped in location as a query string, something similar to:

pages/view_details?location%5Blatitude%5D=37.3505570824247&location%5Blongitude%5D=121.922104884669

And you can use them in your controller with params (as with any other parameter), for example:

latitude = params[:location][:latitude]
longitud = params[:location][:longitude]

answered Jul 26, 2017 at 4:37

Gerry

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2 Comments

user2963365 Over a year ago

Thank you, that fixed the error I was getting. However now it seems to be calling the pages#show action and displaying the pages/show view. The view_details action isn't being executed at all. Do you know what could be causing this?

user2963365 Over a year ago

nevermind, I was able to fix it using stackoverflow.com/questions/30633639/…

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