Using React and Material UI to customize the required label in a text field

Question

Using React and Material UI to customize the required label in a text field

In my React application, I am incorporating Material-UI. My goal is to modify the default label "Please fill out this field" of a text-field when setting the required attribute.

I attempted to utilize setCustomValidity with inputProps, but unfortunately, no changes occurred. There are two variations of this label - one acts as a tooltip displayed when hovering over the text-field, and the other appears upon form submission.

reactjs material-ui textfield

Answer 1

Answer №1

If you want to customize the validation message for the TextField component instead of using the default 'required' message, you can do so by following these steps:

     <TextField
        onInvalid={() => {
          document
            .getElementById("business-email-textfield")
            .setCustomValidity("Please type a valid email address");
        }}
        required
        id="business-email-textfield"
        label="Business Email"
        name="email"
        onChange={handleInput}
        variant="standard"
      />

Within the handleInput function that manages input values, make sure to reset the custom-validation message. Here's an example of how to do it:

  const [formInput, setFormInput] = useReducer(
      (state, newState) => ({ ...state, ...newState }),
    {
        email: "",
        businessType: "",
    }
  );

  const handleInput = (evt) => {
    const name = evt.target.name;
    const newValue = evt.target.value;
    setFormInput({ [name]: newValue });
    //the line below clears the custom-validation message
    document.getElementById(evt.target.id).setCustomValidity("");
  };

Answer 2

If you want to customize the validation message for the TextField component instead of using the default 'required' message, you can do so by following these steps:

     <TextField
        onInvalid={() => {
          document
            .getElementById("business-email-textfield")
            .setCustomValidity("Please type a valid email address");
        }}
        required
        id="business-email-textfield"
        label="Business Email"
        name="email"
        onChange={handleInput}
        variant="standard"
      />

Within the handleInput function that manages input values, make sure to reset the custom-validation message. Here's an example of how to do it:

  const [formInput, setFormInput] = useReducer(
      (state, newState) => ({ ...state, ...newState }),
    {
        email: "",
        businessType: "",
    }
  );

  const handleInput = (evt) => {
    const name = evt.target.name;
    const newValue = evt.target.value;
    setFormInput({ [name]: newValue });
    //the line below clears the custom-validation message
    document.getElementById(evt.target.id).setCustomValidity("");
  };

Answer 3

Answer №2

The issue you're encountering isn't specific to material-ui; it's actually how the browser interprets and displays errors. Unfortunately, this behavior is dictated by the "required" attribute and cannot be altered. The only way to address this is by implementing custom error handling within your form.

Answer 4

The issue you're encountering isn't specific to material-ui; it's actually how the browser interprets and displays errors. Unfortunately, this behavior is dictated by the "required" attribute and cannot be altered. The only way to address this is by implementing custom error handling within your form.

Answer 5

Answer №3

Below is the snippet of code that I implemented in a recent personal project:

<TextField
               error={this.props.error_val
                    ? true
                    : false
                }
                required={this.props.isRequired ? true : false}
                type={this.props.type}
                label={this.props.label}
                variant={this.props.VARIANT}
                className={classes.root}
/>

To determine whether an input is filled or not, you can utilize the combination of required and error attributes.

Additionally, creating a validate() function with a switch statement allows you to pass the "label name" and "value", returning the appropriate value for your <TextField/> component.

Snippet:

    validate = (name, value) => {
        let error = "";
        switch (name) {
          case "name":
            error = (!value || value.length == 0) && "Please enter the name";
            break;
    }
            return error;
}

Answer 6

Below is the snippet of code that I implemented in a recent personal project:

<TextField
               error={this.props.error_val
                    ? true
                    : false
                }
                required={this.props.isRequired ? true : false}
                type={this.props.type}
                label={this.props.label}
                variant={this.props.VARIANT}
                className={classes.root}
/>

To determine whether an input is filled or not, you can utilize the combination of required and error attributes.

Additionally, creating a validate() function with a switch statement allows you to pass the "label name" and "value", returning the appropriate value for your <TextField/> component.

Snippet:

    validate = (name, value) => {
        let error = "";
        switch (name) {
          case "name":
            error = (!value || value.length == 0) && "Please enter the name";
            break;
    }
            return error;
}

Answer 7

Answer №4

I encountered a similar situation where I needed to maintain the TextField required property as true in order for MUI to apply the Mui-required CSS class appropriately to the component and its nested elements. This would, for instance, result in a visually appealing red asterisk next to the label.

To achieve this, you can enclose the TextField within a Box element and include the noValidate attribute on the Box, like so:

    <Box component="form" noValidate autoComplete="off">
      <TextField
        required
        //...
      />
    </Box>

By following this approach, you can eliminate the default browser behavior triggered by the required attribute, allowing you to customize your own helper text instead.

Just a heads up: including autoComplete="off" is crucial for preventing unwanted auto-fill suggestions in form fields that may disrupt user experience.

I trust that this workaround proves useful in your scenario.

Answer 8

I encountered a similar situation where I needed to maintain the TextField required property as true in order for MUI to apply the Mui-required CSS class appropriately to the component and its nested elements. This would, for instance, result in a visually appealing red asterisk next to the label.

To achieve this, you can enclose the TextField within a Box element and include the noValidate attribute on the Box, like so:

    <Box component="form" noValidate autoComplete="off">
      <TextField
        required
        //...
      />
    </Box>

By following this approach, you can eliminate the default browser behavior triggered by the required attribute, allowing you to customize your own helper text instead.

Just a heads up: including autoComplete="off" is crucial for preventing unwanted auto-fill suggestions in form fields that may disrupt user experience.

I trust that this workaround proves useful in your scenario.

Using React and Material UI to customize the required label in a text field

Answer №1

Answer №2

Answer №3

Answer №4

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