Utilizing Angular to parse a JSON string generated with json.dumps

I am having trouble finding a solution that works for me.

Currently, I am using python 3.6 (Django Rest Framework) on the server side and Angular 5 on the client side.

This is the code on the server:

class TypesView(APIView):
    def get(self,request):
        a = ['Cat','Dog']
        j = json.dumps(a)
        return Response(data=j, status=status.HTTP_200_OK)

I am attempting to parse this data on the client side:

public getAnimalRaces(): Observable<string[]>{
     const path = environment.apiEndpoint + "animals/races/"
    return this._http_client.get<string[]>(path)
  }

However, I keep encountering the following error: Error trying to diff '["Cat", "Dog"]'. Only arrays and iterables are allowed

This is what is being returned to the client:

"[\"Cat\", \"Dog\"]"

Any suggestions or ideas on how to resolve this issue?

Answer №1

If you're attempting to loop through a string, consider parsing it as JSON first so that it becomes an array. This will allow you to use *ngFor in the template effectively.

this._http_client.get<string[]>(path)
  .map((res) => JSON.parse(res));

Answer №2

The answer provided needs to be converted into a JSON format for proper functionality. To achieve this, it should be sent as plain JSON on the server side or treated as a string and parsed using JSON.parse() on the client side.

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