Tips for incorporating a Font Awesome icon <i> within a select dropdown and customizing its appearance

I am facing an issue while trying to insert an icon into a select option. The error message I received is:

Warning: validateDOMNesting(...): cannot appear as a child of <option>

To indicate that certain fields are required, I am using asterisk icons in all my input fields like this:

<label htmlFor="floatingInput31">
    {cli_nome !== '' ? null
    :<i className="fa-solid fa-asterisk fa-2xs" style={{color: "#e41607"}} id="icon-asterisco-obrigatorio"></i>
    }
    E-mail
</label>

However, when I tried to implement the same concept in a select field, I encountered the mentioned error:

<select className="select-cidades" nome='cidades' id='cidade' value={end_cid_id} onChange={salvarCidade}>
    {end_cid_id === '' ? <option value='0000000'><i className="fa-solid fa-asterisk"> </i> Escolha a cidade</option> 
    :
    <option value="0000000">Escolha a cidade</option>
    }
    <option value="0000000">Escolha a cidade</option>
    {
        cidades.map((city) => {
            return <option key={city.cid_id} value={city.cid_id}>{city.cid_nome} - {city.cid_uf_sigla}</option>
        })
    }
</select>

I have attempted to include the icon code as

<option value='0000000'>&#xf069; Escolha a cidade</option>
, but I am unable to apply any styling in this manner.

https://i.stack.imgur.com/wDfue.png

If anyone has a solution or suggestion, please let me know. Thank you!

Answer №1

I discovered a clever technique to indicate required fields by transforming the select element into a bootstrap dropdown menu.

Check out the updated syntax below:

<div className='col-lg-8'>
    <div className="dropdown mt-2" id="dropdown-cidades-area">
        {cepFilled === true ? <button className="btn btn-secondary" type="button" id="dropdown-menu-cidades" data-bs-toggle="dropdown" aria-haspopup="true" aria-expanded="false" value={end_cid_id}>
            {end_cid_nome}
        </button>
        : 
        <>
            {end_cid_id === ''? <button className="btn btn-secondary " type="button" id="dropdown-menu-cidades" data-bs-toggle="dropdown" aria-haspopup="true" aria-expanded="false" value={end_cid_id}>
                <i className="fa fa-solid fa-asterisk fa-2xs my-auto" style={{color: "#e41607"}} id="asterisk-cidades"></i> 
                Choose the city
            </button>
            :
            <button className="btn btn-secondary " type="button" id="dropdown-menu-cidades" data-bs-toggle="dropdown" aria-haspopup="true" aria-expanded="false" value={end_cid_id}>
                {end_cid_nome}
            </button>
            }
                
        </>
        }
                    
        <div className="dropdown-menu" aria-labelledby="dropdown-menu-button">
            {
                cepFilled ?
                cidades.map((city) => (
                    // <a key={city.cid_id} className="dropdown-item" href="#" onClick={() => salvarCidade(city.cid_id)}>
                    //     {city.cid_nome} - {city.cid_uf_sigla}
                    // </a>
                    <a key={city.cid_id} className="dropdown-item" href="#" onClick={() => salvarCidade(city.cid_id)}>
                        {city.cid_nome} - {city.cid_uf_sigla}
                    </a>

                )) :
                <>
                    <a className="dropdown-item" onClick={() => salvarCidade} value={end_cid_id}> Choose the city</a>
                    {
                        cidades.map((city) => (
                            <a key={city.cid_id} className="dropdown-item" onClick={() => salvarCidade(city.cid_id)}>
                                {city.cid_nome} - {city.cid_uf_sigla}
                            </a>
                        ))
                    }
                </>
            }
        </div>
    </div>
</div>

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