CODEWITHSUNDEEP
ruby-on-rails
Bad Hombre
Bad Hombre

Reputation: 594

Rails - Find by username and post id

In my posts controller, right now I'm finding posts by user_id and post_id and it works perfectly fine

    def find_post
        @track = Track.find_by(user_id: params[:id], post_id: params[:post_id])
    end

I am looking for a way to find the post instead of the user_id, by the username for example if it's finding the post like this:

/:user_id/:post_id

To something like:

/:username/:post_id

So how can I access the username parameter in the url? or is there a better process for this?

Upvotes: 0

Views: 3052

Answers (1)

Shiva
Shiva

Reputation: 12514

Rails's Router maps the :placeholders to params object-keys. Like

/:user_id/:slug

maps user_id to params[:user_id]

/:username/:slug

maps username to params[:username]. So you can access the supplied username via params object. and make DB calls like

user  = User.find_by_username(params[:username])
@post = user.posts.find(params[:post_id])

You cannot find post directly from username because you have no information that which username does this post belongs to. You only have user_id as foreign_key but not username.

Upvotes: 1

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