I am trying to follow the Formik documentation on using [FieldArrays](https://jaredpalmer.com/formik/docs/api/fieldarray) so that I can add repeatable form elements to my form.

I've also seen this [Medium post](https://medium.com/@rossbulat/react-formik-a-dive-into-field-arrays-fc58fff8a791) setting out an example. 

I'm slow to learn and can't join the dots between the documentation and the implementation.

I want to have a button in my main form that says: "Add a request for data".

If that button is selected, then a nested form setting out the data profile is displayed, along with "add another data request" and "remove" buttons.

I have made the nested form in another component in my application, but I'm struggling to figure out how to use the example from the medium post to incorporate the nested form (as a repeatable element - ie someone might want 5 data requests).

Are there any examples of how to implement this? 

In my code, I have basically followed the medium post, but tried to link the Data Request form component inside the index 

```
<button 
      type="button"
      onClick={() => arrayHelpers.insert(index, <DataRequestForm />)}>
      Add a data request
</button>   

```

This is plainly incorrect, but I can't get a handle on how to do this. 

Taking Nithin's answer, I've tried to modify the embedded form so that I can use react-select, as follows, but I'm getting an error which says: 

> 
> TypeError: Cannot read property 'values' of undefined
> 
> 
> 

```
import React from "react";
import { Formik, Form, Field, FieldArray, ErrorMessage, withFormik } from "formik";
import Select from "react-select";

import {
  Button,
  Col,
  FormControl,
  FormGroup,
  FormLabel,
  InputGroup,
  Table,
  Row,
  Container
} from "react-bootstrap";

const initialValues = {
  dataType: "",
  title: "",
  description: '',
  source: '',

}

class DataRequests extends React.Component {

  render() {
    const dataTypes = [
      { value: "primary", label: "Primary (raw) data sought" },
      { value: "secondary", label: "Secondary data sought"},
      { value: "either", label: "Either primary or secondary data sought"},
      { value: "both", label: "Both primary and secondary data sought"}
    ]

    return(
      <Formik
          initialValues={initialValues}
          render={({ 
            form, 
            remove, 
            push,
            errors, 
            status, 
            touched, 
            setFieldValue,
            setFieldTouched, 
            handleSubmit, 
            isSubmitting, 
            dirty, 
            values 
          }) => {
          return (
            <div>
                {form.values.dataRequests.map((_notneeded, index) => {
                return (
                  <div key={index}>
                    <Table responsive>
                      <tbody>
                        <tr>
                          <td>
                            <div className="form-group">
                              <label htmlFor="dataRequestsTitle">Title</label>
                              <Field
                                name={`dataRequests.${index}.title`}
                                placeholder="Add a title"
                                className={"form-control"}
                              >
                              </Field>
                            </div>
                          </td>
                        </tr>
                        <tr>
                            <td>
                              <div className="form-group">
                                <label htmlFor="dataRequestsDescription">Description</label>
                                  <Field
                                    name={`dataRequests.${index}.description`}
                                    component="textarea"
                                    rows="10"
                                    placeholder="Describe the data you're looking to use"
                                    className={
                                      "form-control"}
                                  >
                                  </Field>
                              </div>    
                            </td>
                        </tr>
                        <tr>
                          <td>
                            <div className="form-group">
                              <label htmlFor="dataRequestsSource">Do you know who or what sort of entity may have this data?</label>
                                <Field
                                  name={`dataRequests.${index}.source`}
                                  component="textarea"
                                  rows="10"
                                  placeholder="Leave blank and skip ahead if you don't"
                                  className={
                                    "form-control"}
                                >
                                </Field>
                            </div>    
                          </td>
                        </tr>
                        <tr>
                          <td>
                            <div className="form-group">
                              <label htmlFor="dataType">
                              Are you looking for primary (raw) data or secondary data?
                              </label>

                              <Select
                              key={`my_unique_select_keydataType`}
                              name={`dataRequests.${index}.source`}
                              className={
                                  "react-select-container"
                              }
                              classNamePrefix="react-select"
                              value={values.dataTypes}
                              onChange={selectedOptions => {
                                  // Setting field value - name of the field and values chosen.
                                  setFieldValue("dataType", selectedOptions)}
                                  }
                              onBlur={setFieldTouched}
                              options={dataTypes}
                              />

                            </div>    
                          </td>
                        </tr>

                        <tr>
                          <Button variant='outline-primary' size="sm" onClick={() => remove(index)}>
                            Remove
                          </Button>
                        </tr>
                      </tbody>
                    </Table>    
                  </div>
                );
              })}
              <Button
                variant='primary' size="sm"
                onClick={() => push({ requestField1: "", requestField2: "" })}
              >
                Add Data Request
              </Button>

            </div>
          )
          }
          }
      />
    );  
  };
};

export default DataRequests;

```