ruby - Enable/disable the custom field when another custom field is selected -


i need disable 1 custom field when other custom field selected. example, have custom field dropdown format. when click on 2nd option of particular custom field,the other custom field should disabled , 1 more custom field should enabled. how do in redmine?

as understood wanted change option of 2nd dropdown box on bases of 1st dropdown's option selection:

this sample code perform same using jquery. can modify per requirement.

html 

<select class="product" id="select_1" name="product">   <option selected="selected" value=""> choose category </option>   <option value="mens suits"> mens suits </option>   <option value="womens suit"> womens suits </option>   <option value="children suit"> children suits </option> </select>  <select class="size" id="select_3" name="size">   <option selected="selected" value=""> choose size </option> </select>

jquery:

var men = '<option selected="selected" value=""> choose size </option><option value="36">36</option><option value="38">38</option><option value="40">40</option>'; var women = '<option selected="selected" value=""> choose size </option><option value="26">26</option><option value="28">28</option><option value="30">30</option>'; var children = '<option selected="selected" value=""> choose size </option><option value="12">12</option><option value="11">11</option><option value="10">10</option>'; $(document).ready(function(){     $("select#select_1").on('change',function(){         if($(this).val()=="mens suits"){             $("select#select_3").html(men);         }else if($(this).val()=="womens suit"){             $("select#select_3").html(women);         }else if($(this).val()=="children suit"){             $("select#select_3").html(children);         }     }); });

working demo

i hope helps you. :)


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