I want to take take an endpoint that is built from this Angular typescript frontend code
getPartNumbersFromManufacture(manufactureNameId : Number)
{
let parameter = new HttpParams().set("FKManufactureNameId", manufactureNameId.toString())
return this.http.get<ManufacturePartNumber[]>(this.manufactureUrl + '/PartNumber', {params: parameter}).pipe(
tap(data => console.log('All: ' + JSON.stringify(data))),
catchError(this.handleError)
);
}
This results in a request that looks like this:
Request URL: https://localhost:5001/api/Manufacture/PartNumber?FKManufactureNameId=14703
Request Method: GET
Status Code: 200 OK
Remote Address: [::1]:5001
Referrer Policy: no-referrer-when-downgrade
The .netcore C# code looks like this, the endpoint is being hit, but the manufactureNameID is always =0, and if i try to change it to a string it is null.
[Route("api/Manufacture")]
public class ManufactureController : ControllerBase
{ ...
[HttpGet("PartNumber/{FKManufactureNameId=manufactureNameID}")]
public IEnumerable<Views.ManufacturePartNumber> PartNumbers(int manufactureNameID) //pass the manufacture id from the frontend and get the part numbers associated with this manufacturer
{
TrackingContext context = new TrackingContext();
IEnumerable<ManufacturePartNumber> manufacturePartNumbers = context.ManufacturePartNumber.Where(n => n.FkManufactureNameId == manufactureNameID);
List<Views.ManufacturePartNumber> manufacturePartNumberView = new List<Views.ManufacturePartNumber>();
for (int i = 0; i < manufacturePartNumbers.Count(); i++)
{
manufacturePartNumberView.Add(new Views.ManufacturePartNumber(manufacturePartNumbers.ElementAt(i)));
}
return manufacturePartNumberView;
}
...}
What am I doing wrong, I want my C# code to process this query parameter that has an equal sign since this seems to be the standard way that "HttPClient" class builds the query parameters when passed a "HttpParams" object. I know how to handle no '=' but I'm guessing the '=' is the new standard/best practice?
Your api declaration seems it is not accurate.
This is is what I believe you want to do:
[HttpGet("PartNumber")] /* <--- */
public IEnumerable<Views.ManufacturePartNumber>
PartNumbers(/* --> */[FromQuery]int manufactureNameID)
{...
You want a parameter to be taken from QueryString therefore you indicate so with [FromQuery]
attribute next to the parameter, like:
[FromQuery]int manufactureNameID
Also your [HttpGet]
Attribute does not need to add anything else but the "Method Routing" which in this case is [HttpGet("PartNumber")]
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