Rails没有匹配的路线[DELETE]

Question

So I'm trying to delete something in my database by making a fetch request in ReactJS , this will be hanled by Rails API Mode .

So this is how I fetch it in my front-end :

removeParticipationToContribution = id_request => {
        fetch(
            `http://localhost:3000/participants?id_request=${id_request}&user_id=${localStorage.getItem(
                'email'
            )}`,
            {
                method: 'DELETE',
                headers: {
                    'Content-Type': 'application/json',
                    'X-User-Email': localStorage.getItem('email'),
                    'X-User-Token': localStorage.getItem('token')
                }
            }
        )
    }

Here is the line of this route : resources :participants, only: [:create, :show, :destroy]

The problem here is that when I trigger this function, I get this error : ActionController::RoutingError (No route matches [DELETE] "/participants"):

Here is my controller :

def destroy
        participant = Participant.where(id_request: participant_params[:id_request], user_id: participant_params[:user_id]).first
        puts "---------------"
        puts params.inspect
        puts participant_params[:user_id]
    end

    private def participant_params
        params.permit(:id_request, :user_id)
    end

But it seems like he don't get to that controller .

I tried to do http://localhost:3000/participants/destroy?id_request=... but that gave me a bunch of unpermitted params while those 2 params are permitted.

Answer 1

The DELETE route (which you can see by running rake routes | grep participants ) is expecting a route in the format:

DELETE /participants/:id(.:format) participants#destroy

However, you're trying to access the route:

http://localhost:3000/participants?id_request=(...)&user_id=(...)

This is not the same route. The id needs to be a route param, not a query param.

If this isn't the route format you'd like, then you can define it manually (ie don't just follow the standard convention that rails generated on your behalf).

For example , you may choose to use:

delete 'participants/:id_request/:user_id(.:format)', :to => 'participants#destroy'

Or:

delete 'participants(.:format)', :to => 'participants#destroy'

(...and then fail in the controller if a required param is missing)

But however you choose to do it, the route structure needs to match how you're calling it.