Displaying custom error message in Admin UI in Strapi 4.8.x

Questions and Answers
1
System Information
  • Strapi Version: 4.8.2

Hello,

in Strapi v4.7.x I could display a custom error message in the Admin UI by throwing an ApplicationError:

throw new utils.errors.ApplicationError(`Custom error message`);

In Strapi v4.8.2 this doesn’t work anymore. The above code results in a generic error message (e.g. “Warning: Request failed with status code 400”).

In the response I can still see the custom error message:

error: {
    status:		400
    name:		"ApplicationError"
    message:	"Custom error message"
    details:	{ ... }
}

How can I display this custom error message in Strapi v4.8.?

Thank and best regards

1 Like
2

Nvm, it was fixed in Strapi v4.8.3 right away: useAPIErrorHandler: Reverse error handling (API -> Axios) by gu-stav · Pull Request #16162 · strapi/strapi · GitHub

3

Problem is here again. Just upgraded to latest Strapi v4.10.6.

package.json

    "@strapi/strapi": "4.10.6",
    "@strapi/plugin-users-permissions": "4.10.6",
    "@strapi/provider-email-sendgrid": "4.10.6",
    "@strapi/provider-upload-cloudinary": "4.10.6"

Code:
throw new utils.errors.ApplicationError("Custom error message");

Network shows:

{
"data":null,
"error":{
 "status":400,
 "name":"ApplicationError",
 "message":"Custom error message",
 "details":{}
 }
}

But UI shows: “Warning: Request failed with status code 400” 🥲

4

@Mehoff are you able to fix this error?

5

I got the solution-
just install the @strapi/utils package and then its working fine

6

@Abhinegi2
I just tried it with v4.11.1 after installing @strapi/utils package but it is not working for me. In the Admin UI it shows internal server error.

7

I’m on v4.13.1 and its still not working. Would be happy if this gets fixed. @DMehaffy any news on that maybe?

1 Like
8

I’m on version 4.11.1 and it is still not working for me.

    "@strapi/plugin-i18n": "^4.11.1",
    "@strapi/plugin-users-permissions": "^4.11.1",
    "@strapi/strapi": "^4.11.1",
    "@strapi/utils": "^4.11.1",
9

I set up a new project yesterday on v4.17.1 and it doesn’t seem to display any errors in the Admin UI at all, no matter what I throw. They all just get silently ignored.

10

i am using strapi 4.15 and below code works for me and even if we mention filed name in path key it also highlight field in admin ui form

const { errors } = require("@strapi/utils");
const { ApplicationError } = errors;      
throw new ApplicationError("Title already exist", {
        errors: [
          {
            path: ["title"],
            message: "This attribute must be unique",
            name: "ValidationError",
          },
        ],
      });
1 Like
11

Hope it hepls someone)

  module.exports = {
    beforeCreate: async (event) => {
      console.log(event);

      const ctx = strapi.requestContext.get();

      ctx.throw(400, {
        details: {
          errors: [
            {
              path: ["slug"],
              message: "This attribute must be unique",
              name: "ValidationError",
            },
          ],
        },
        message: "This attribute must be unique",
        name: "ValidationError"
      });
      return ctx;
    },
    beforeUpdate: async (event) => {

    },
  };

@jangxx @Tirth_Work @0x273464

2 Likes
12

This one actually works flawlessly in my case (strapi 4.15.5).

Thank you a lot

13

Works with 4.20.5)