:javascript
  $('.create-rocket').click(function () {
    swal({
      input: 'text',
      title: "#{t('keppler.rockets.choose_a_name')}",
      text: "#{t('keppler.rockets.rocket_name')}",
      confirmButtonText: "#{t('keppler.rockets.create_rocket')}",
      cancelButtonText: "#{t('keppler.rockets.cancel')}",
      showCancelButton: true,
    }).then((result) => {
      if (parseRocketName(result.value) && parseRocketName(result.value) != '') {
        var rocket_name = parseRocketName(result.value);
        swal({
          title: "#{t('keppler.rockets.you_sure')}",
          html: `#{t('keppler.rockets.will_be_named')}:<pre><code>keppler_${parseRocketName(result.value)}</code></pre>`,
          confirmButtonText: "#{t('keppler.rockets.great')}",
          showCancelButton: true,
        }).then((result) => {
          if (result.value) {
            swal({
              title: "#{t('keppler.rockets.great')}",
              html: "#{t('keppler.rockets.wait_generator')}",
              timer: 3000,
              onOpen: () => {
                swal.showLoading()
              },
            }).then((result) => {
              $('.spinner').fadeIn()
              $('.create_rocket_form')
                .attr('action', `/admin/rockets/create/${rocket_name}`)
                .submit()
              // if (result.dismiss === swal.DismissReason.timer) {
              // }
            })
          }
        })
      } else {
        swal({
          title: 'Oops!',
          html: "#{t('keppler.rockets.unpermitted_name')}",
          timer: 3000
        })
      }
    })
  })

  function parseRocketName(rocket_name) {
    var rn = rocket_name
      .toLowerCase()
      .split('keppler').join('')

    var valid_chars = [];
    for (var i = 0; i < rn.split('').length; i++){
      var char = rn.split('')[i]
      if ([' ', '_'].includes(char)) valid_chars.push('_')
      else if (/[a-zA-Z]/.test(char)) valid_chars.push(char);
    }
    rn = valid_chars.join('')
    while (rn[0]=='_') rn = rn.substring(1, rn.length);
    return rn
  }