[angular] retrieve the data as number

로바아토 2018. 3. 21. 11:43

this code looks like no problem. but actually it could be error.

this.route.params.subscribe(
      (params:Params) => {
        this.server = this.serversService.getServer(params['id']);
      }
    );

let's look at this method. >> getServer(id:number)

the parameter of getserver is for 'number'

but the data from route.params is always string. so it makes the error.

we can fix this with just one typing of '+'

'+' cast the variable from string to number.

this.route.params.subscribe(
      (params:Params) => {
        this.server = this.serversService.getServer(+params['id']);
      }
    );