Where the :id in a route comes from?

Your id will come from the database using a function like this in a context

ex:

def get_customer(id) do
   Customer
   |> Repo.get(id)
end

Then this function will be called in a controller.

To u8nderstand this better follow the phoenix guide here Overview — Phoenix v1.8.8

ohhh… right, reading the documentation helps. Sorry about that. So, for what I understand if I want to use another parameter what I need is to define a helper. Let’s say I have a table like this:

id      product_code
1      1001
2      1002
3      4569

and I want to be able to filter by product_code, then I would need something like this?

get "/api/:product_code", ApiController, :show

I understand it wil automatically generate this:

MyAppWeb.Router.Helpers.api_path(conn_or_endpoint, :show, "hello", some: "query")
"/api/hello?some=query"

Am I correct?

Thanks!

OK, that helps. Thank you! I do not see any of that in the provided code but as @LostKobrakai points out, it seems to be implicit. I will read the whole thing carefully to better understand the concept. Thanks again for replying.

To be able to access the resources route you need to have:

• a migration
• a schema
• a controller
• a view
• a template.

So you use a mix generator to do that for you but those things need to exist to be able to use the resource route.

The following command might be useful if You want to inspect your routes.

$ mix phx.routes