question: How to get route.param on a RoutingController?

[rafaell-lycan]

I was trying to...

I have a very specific scenario giving the following situation where I need to check on all my routes if a param resourceType exists or not add some params to the request object giving my param value:

app.param('resourceType', (req, res, next, resourceType) => {
  try {
     const { 
        getResource,
        getResources,
        getUsers,
        getRoles,
        updateRole,
        deleteRole,
        createSuperAdmin,
        deleteSuperAdmin,
      } = getResourceRoutersParams(resourceType);

    req.resource = {
        getResource,
        getResources,
        getUsers,
        getRoles,
        updateRole,
        deleteRole,
        createSuperAdmin,
        deleteSuperAdmin,
    };

     next();
    } catch (e) {
      logger.error(e);
      throw new ResourceNotFoundError();
    }
})

I'm solving the issue using the app.param API

The problem:

All my routes contain a :resourceType param:

• GET /resources/:resourceType/:resourceId/users
• GET /resources/:resourceType/roles
• GET/PUT/DELETE /users/:userId/:resourceType
• GET/PUT/DELETE /users/:userId/:resourceType/:resourceId

There is any way to implement it other than adding a middleware for each route?

[MysticTory]

What i have done in the past, is I create a class:

class Params {
  @IsUUID()
  resourceType:  string; 
}

then you can extends the class for other params.

class OtherParam extends Params {
 userId: string
}

then on your controller

class Controller {
  @Get("something")
  dosomething(@Params() params: Params) {
  }
}

may not be the best way, but it allowed me to declare it once and easily use throughout my code.

[rafaell-lycan]

@drpym I got your point, but is not the same idea, the app.param API works mostly like middleware and honestly, I don't wanna implement a middleware, although my ResourcesController needs it for each route, the UsersController only needs on 2 routes, so I was wondering if there's an easier way for it.

[MysticTory]

Ah ok. That makes sense. Sorry for the wrong answer 🤦🏾 If you find a more elegant solution I would be curious as to what you do.

[attilaorosz]

@rafaell-lycan You might be able to use a global middleware that does this for you. https://github.com/typestack/routing-controllers#global-middlewares. Could you please check if this solves your issue?

[attilaorosz]

Closing as stale.

[github-actions]

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