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React Embed

Using @impler/react package you can embed CSV Excel Importer into your application with just few lines of code.

Let's do a quick review of how to use @impler/react in your application.

Add Script

You copy this snippet to your code before the closing body tag.

<script type="text/javascript" src="https://embed.impler.io/embed.umd.min.js" async></script>

It will add impler variable in window, so you can call its init and show method.

Install the Package

Add @impler/react in your application by running the following command.

npm i @impler/react
# or
yarn add @impler/react

Add Import Button

@impler/react provides headless useImpler hook that you can use to show an import widget in your application.

import { useImpler } from '@impler/react';

const { showWidget, isImplerInitiated } = useImpler({
    projectId: "",
    templateId: "",
    accessToken: "",
});

<button disabled={!isImplerInitiated} onClick={showWidget}>
    Import
</button>

isImplerIntiated becomes true when the import widget is ready to open and import data. It remains false when there are some errors with the provided values. Errors get logged in the console panel of the browser.

Customize Texts

import { useImpler } from '@impler/react';

const { showWidget, isImplerInitiated } = useImpler({
    ...
    texts: {
      STEPPER_TITLES: {
          REVIEW_DATA: 'Check Data', // New Title
      },
    },
});

<button disabled={!isImplerInitiated} onClick={showWidget}>
    Import
</button>

Listening for Events

Prop
Type
Description

onUploadStart

(value) => void

Function that get's called when user starts upload

onUploadTerminate

(value) => void

Function that get's called when user leaves spreadsheet import in between

onUploadComplete

(value) => void

Function that gets called when user completes the import

onWidgetClose

() => void

Function that gets called when widget is closed

onDataImported

(data) => void

Usage Example

const { showWidget, isImplerInitiated } = useImpler({
    projectId: "",
    templateId: "",
    accessToken: "",
    onUploadStart: (uploadInfo) => {
        console.log("User Started Importing", uploadInfo);
    },
    onUploadTerminate: (uploadInfo) => {
        console.log("User left Import in middle", uploadInfo);
    },
    onUploadComplete: (uploadInfo) => {
        console.log("User completed import", uploadInfo);
    },
    onWidgetClose: () => {
        console.log("Import widget is closed");
    },
    onDataImported: (data) => {
        console.log("Imported data:", data);
    }
});

Applying App's Color Scheme

Your application may be developed by keeping dark and light modes in mind. So to let the Import widget show the widget overlay properly, you need to pass colorScheme in showWidget function.

Allowed values for colorScheme are light or dark.

showWidget({ colorScheme: 'light' })

Data Seeding in Sample File

You can provide default data to fill in the Sample file that gets generated from the Import widget. Default data act as a placeholder for the user to further add or update the data.

Here is an example of how to provide data to fill in the sample file,

showWidget({
  data: [
      { country: 'ABC' },
      { country: 'DEF' },
      { country: 'GHE' },
  ]
});

Providing Runtime Schema

The schema and output provided in the web.impler.io portal for any import behave as default values for any Import. It's possible to override the default schema and output, to adapt dynamic nature of Import.

Here is an example of how to provide dynamic schema and output,

showWidget({
  schema: [
      {
        key: 'country',
        name: 'Country',
        type: 'String'
      }
  ],
  output: {
    "%data%": {
      "country_id": "{{country}}"
    },
    "page": "{{page}}",
    "chunkSize": "{{chunkSize}}",
    "isInvalidRecords": "{{isInvalidRecords}}",
    "template": "{{template}}",
    "uploadId": "{{uploadId}}",
    "fileName": "{{fileName}}",
    "extra": "{{extra}}"
  }
});

Advanced Validations

You can provide Advanced Validations in the column as validations key,

showWidget({
  schema: [
    {
      "key": "Department Code",
      "name": "Department Code",
      "type": "String",
      "validations": [
        {
          "validate": "unique_with",
          "uniqueKey": "Employee No"
        }
      ]
    },
    {
      "key": "Employee Id",
      "name": "Employee Id",
      "type": "Number",
      "validations": [
        {
          "validate": "unique_with",
          "uniqueKey": "Employee No"
        }
      ]
    }
  ]
});

Using Typescript

If you're using typescript, you can leverage typescript types, like,

import { useImpler, ColumnTypes, ValidationTypes } from '@impler/react';

const { showWidget } = useImpler({ ... })

showWidget({
  schema: [
      {
        key: 'country',
        name: 'Country',
        type: ColumnTypes.STRING,
        "validations": [
          {
            "validate": ValidationTypes.LENGTH,
            "min": 5,
            "max": 100,
            "errorMessage": "Country Name must be between 5 to 100 characters"
          }
        ]
      }
  ]
});

Passing Extra Parameters

It's an obvious need that we want to pass userId or orgId representing who imported the data. In that case, you can pass that data in an extra parameter.

You can pass string, object, or array in extra. Here is an example of how to do it,

const { showWidget, isImplerInitiated } = useImpler({
    projectId: "",
    templateId: "",
    accessToken: "",
    extra: {
        userId: '4ddhodw3',
        time: new Date().this string()
    }
});

The extra parameters get sent to an application during the webhook call.

Programmatically Closing Import Widget

Impler's import widget provides closeWidget a method that closes the import widget. Useful to close the import widget once data is imported.

const { showWidget, closeWidget, isImplerInitiated } = useImpler({
    projectId: "",
    templateId: "",
    accessToken: "",
    onDataImported: (data) => {
        console.log("Imported data:", data);
        closeWidget();
    }
});

Changing Import Title

By default, the Import widget takes the name of the Import to show in the title. But it's possible to change the title from the implementation side too. Helpful to keep the title separate from what the name is given in the web portal.

Here is how,

const { showWidget, isImplerInitiated } = useImpler({
    projectId: "",
    templateId: "",
    accessToken: "",
    title: "Employee Import"
});

Changing Theme Color

You can pass a primary color to the import widget, which will update the colors of all buttons accordingly to match your app's theme color.

const { showWidget, isImplerInitiated } = useImpler({
    projectId: "",
    templateId: "",
    accessToken: "",
    primaryColor: '#5f45ff'
});

Providing Authentication Header Value

In case the backend endpoint is authenticated with the token, it's possible to provide token value from the implementation side. You can provide a string or async function that returns the token value.

const { showWidget, isImplerInitiated } = useImpler({
    projectId: "",
    templateId: "",
    accessToken: "",
    authHeaderValue: async () => {
        return "..."
    }
});
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