JavaScript conditional logic in Zapier authentication

Other Questions Zapier
1

I’m new to JavaScript and working on a Zapier app. I’m stuck on the authentication part. My test function always passes, even with wrong credentials. Here’s what I’ve got:

const testAuth = (z, bundle) => {
  const url = 'https://api.example.com/auth';
  return z.request(url, {
    method: 'POST',
    body: {
      apiKey: bundle.authData.api_key
    }
  }).then((response) => {
    const result = JSON.parse(response.content);
    if (result.RESPONSE === 'FAIL') {
      throw new Error(result.REASON);
    }
    return result;
  });
};

This should return an error message when auth fails, but it doesn’t. What am I missing? How can I make it properly handle failed auth and show the reason?

Also, my getGroup trigger isn’t checking for auth failures. Should I add similar logic there too? Any tips on best practices for error handling in Zapier apps would be great.

2

hey, i’ve dealt with this before. ur code looks ok, but u might wanna add a check for the response status. something like:

if (response.status !== 200) {
throw new Error(Auth failed: ${response.status});
}

also, wrap the JSON.parse in a try/catch. for ur getGroup trigger, yeah, add similar checks. it’ll make ur app more robust. good luck!

3

I’ve faced similar issues while developing Zapier integrations. Your approach is on the right track, but there’s a small tweak needed. The test function should throw an error for non-200 status codes. Here’s how I fixed it:

const testAuth = (z, bundle) => {
  const url = 'https://api.example.com/auth';
  return z.request(url, {
    method: 'POST',
    body: {
      apiKey: bundle.authData.api_key
    }
  }).then((response) => {
    if (response.status !== 200) {
      throw new Error(`Unexpected status code ${response.status}`);
    }
    const result = JSON.parse(response.content);
    if (result.RESPONSE === 'FAIL') {
      throw new Error(result.REASON);
    }
    return result;
  });
};

As for your getGroup trigger, yes, it’s good practice to add similar error handling there. I usually create a separate utility function for API calls that includes this logic, then use it across all triggers and actions. This ensures consistent error handling throughout your app.

4

Your approach is close, but there’s a crucial detail you’re overlooking. The API response might not always be JSON, especially for failed requests. Here’s a more robust solution:

const testAuth = (z, bundle) => {
const url = ‘https://api.example.com/auth’;
return z.request(url, {
method: ‘POST’,
body: {
apiKey: bundle.authData.api_key
}
}).then((response) => {
if (response.status !== 200) {
throw new Error(Authentication failed: ${response.status});
}
try {
const result = JSON.parse(response.content);
if (result.RESPONSE === ‘FAIL’) {
throw new Error(result.REASON || ‘Authentication failed’);
}
return result;
} catch (error) {
throw new Error(‘Invalid response from server’);
}
});
};

This handles non-200 status codes and potential JSON parsing errors. For your getGroup trigger, implement similar error checking. Consider creating a reusable error-handling function for consistency across your app.