The API response appears to be a successful 200 status code, however the actual result is a

Question

The API response appears to be a successful 200 status code, however the actual result is a

I'm currently working with a VUEJS / VUEJS Resources code snippet that retrieves data from an API service.

fetchData: function(name){
          var self = this;
          self.$http.get('http://www.apiservice.com/', {
            params: {
               city: name
            },
            }).then((response) => {
            // success callback
            toastr.success('Success!');
            console.debug(response);
          }, (response) => {
             // error
            toastr.error('Something went wrong!')
          });
        }

However, the API always returns a 200 OK response, making it hard to determine when to display an error using toastr.error.

In case of a false response, it will look like this:

{Response: "False", Error: "City not found!"}

.

Here's my question

Is there a way to identify the false value in the response of a 200 OK return and trigger an error message?

javascript vue.js vue-resource

Answer 1

Answer №1

When faced with an API that returns a "no response found" message with an HTTP 200 status code, it may signal poor API design. However, if you lack control over the API, your best option is to handle this in the success function.

To manage errors effectively, consider placing your error handling code within a separate function and invoking it appropriately:

fetchData: function(name){
    var self = this;
    self.$http.get('http://www.apiservice.com/', {
    params: {
       city: name
    },
    }).then((response) => {
        // Handling success
        if (response.Response === "False") {
            onError(response)
        } else {
            toastr.success('Success!');
            console.debug(response);
        }
    }, onError);
}

function onError(response) {
   toastr.error('Something went wrong!') 
}

Answer 2

When faced with an API that returns a "no response found" message with an HTTP 200 status code, it may signal poor API design. However, if you lack control over the API, your best option is to handle this in the success function.

To manage errors effectively, consider placing your error handling code within a separate function and invoking it appropriately:

fetchData: function(name){
    var self = this;
    self.$http.get('http://www.apiservice.com/', {
    params: {
       city: name
    },
    }).then((response) => {
        // Handling success
        if (response.Response === "False") {
            onError(response)
        } else {
            toastr.success('Success!');
            console.debug(response);
        }
    }, onError);
}

function onError(response) {
   toastr.error('Something went wrong!') 
}

Answer 3

Answer №2

If you want to toggle a promise from resolve to reject, you can utilize promise chaining:

fetchData: function(name){
          var self = this;
          self.$http.get('http://www.apiservice.com/', {
            params: {
              city: name
            },
            }).then(response)=>{
              if(response.Response === "False"){
                return Promise.reject(response)
              }else{
                return response
              }
            },(a)=>a).then((response) => {
              // success callback
              toastr.success('Success!');
              console.debug(response);
            }, (response) => {
              // error
              toastr.error('Something went wrong!')
            });
        }

The crucial part lies here:

then(response)=>{
  if(response.Response === "False"){
    return Promise.reject(response)
  }else{
    return response
  }
},(a)=>a)

So, if the response is legitimate and the data includes Response: "False", a rejected promise is returned. Otherwise, the response data is simply returned, wrapped in a resolved promise. Consequently, the subsequent then statement proceeds as normal, but any invalid data has already been rejected.

Answer 4

If you want to toggle a promise from resolve to reject, you can utilize promise chaining:

fetchData: function(name){
          var self = this;
          self.$http.get('http://www.apiservice.com/', {
            params: {
              city: name
            },
            }).then(response)=>{
              if(response.Response === "False"){
                return Promise.reject(response)
              }else{
                return response
              }
            },(a)=>a).then((response) => {
              // success callback
              toastr.success('Success!');
              console.debug(response);
            }, (response) => {
              // error
              toastr.error('Something went wrong!')
            });
        }

The crucial part lies here:

then(response)=>{
  if(response.Response === "False"){
    return Promise.reject(response)
  }else{
    return response
  }
},(a)=>a)

So, if the response is legitimate and the data includes Response: "False", a rejected promise is returned. Otherwise, the response data is simply returned, wrapped in a resolved promise. Consequently, the subsequent then statement proceeds as normal, but any invalid data has already been rejected.

The API response appears to be a successful 200 status code, however the actual result is a

Here's my question

Answer №1

Answer №2

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