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Stump the Panel » Site Managers and Site Collection Managers

1. 

   spykew
   Member

   Hi,

   I want to set a field mandatory if another field was selected through javascript.

   My scenario:
   I have a task list with a due date. I want to ensure that if that due date is filled by the user he must fill a justification text field.
   The due date is not mandatory so I can't set the field "Justification" to always mandatory.

   I'm already using a webpart with javascript code in it to hide some fields on EditForm.aspx page, I think I can use a similar approach.

   Any help available?

   Thanks in advance,
   Roger

   Posted 12 months ago #
2. 

   AutoSponge
   Administrator

   spykew,

   This script will only work while Justification is a "Plain Text" field.

   <script type="text/javascript">
   
   function PreSaveAction()
   {
       var findDate = getTagFromIdentifierAndTitle("input","DateTimeFieldDate","Due Date");
       var findText = getTagFromIdentifierAndTitle("textarea","","Justification");
       if(findDate.value != "" && findText.value == "")
       {
           alert("You must provide a Justification for the Due Date");
           return false; // Cancel the item save process
       }
       return true;  // OK to proceed with the save item
   }
   
   function getTagFromIdentifierAndTitle(tagName, identifier, title) {
     var len = identifier.length;
     var tags = document.getElementsByTagName(tagName);
     for (var i=0; i < tags.length; i++) {
       var tempString = tags[i].id;
       if (tags[i].title == title && (identifier == "" || tempString.indexOf(identifier) == tempString.length - len)) {
         return tags[i];
       }
     }
     return null;
   }
   //-->
   </script>

   Posted 12 months ago #
3. 

   spykew
   Member

   Hi AutoSponge,

   Thanks for you help.

   I have a similar script that does the same thing, but I want to avoid that kind of notification through javascript windows. I would like to use the sharepoint built in validation like "throw new SPFieldValidationException("Exception Text");" in C#.

   I just want to know if there's a way of access this functionality by javascript.

   Thanks,
   Roger

   Posted 12 months ago #
4. 

   AutoSponge
   Administrator

   spykew,

   I'm sorry. When you said "I think I can use a similar approach." I thought you meant you wanted to use js. I'm not a developer, so I don't know C#. Good luck.

   Posted 12 months ago #
5. 

   spykew
   Member

   Hi again,

   You are totally right, I forgot to mention that on the previous post.

   Anyway thanks for your help, maybe help others in a similar situation.

   Cheers,
   Roger

   Posted 12 months ago #
6. 

   AutoSponge
   Administrator

   This may not use C# but it looks more like the validation done on the MOSS forms because it uses a new span above the text box instead of an alert pop-up:

   <script type="text/javascript">
   
   function PreSaveAction()
   {
       var findDate = getTagFromIdentifierAndTitle("input","DateTimeFieldDate","Due Date");
       var findText = getTagFromIdentifierAndTitle("textarea","","Test");
       var txt = document.createElement("span");
       txt.className = "ms-formvalidation";
   
       if(findDate.value != "" && findText.value == "")
       {
           txt.appendChild(document.createTextNode("You must provide a Justification for the Due Date"));
           txt.id = "val1";
           if (document.getElementById("val1")){
           }else{
               findText.parentNode.insertBefore(txt, findText);
           }
           return false; // Cancel the item save process
       }
       return true;  // OK to proceed with the save item
   }
   
   function getTagFromIdentifierAndTitle(tagName, identifier, title) {
     var len = identifier.length;
     var tags = document.getElementsByTagName(tagName);
     for (var i=0; i < tags.length; i++) {
       var tempString = tags[i].id;
       if (tags[i].title == title && (identifier == "" || tempString.indexOf(identifier) == tempString.length - len)) {
         return tags[i];
       }
     }
     return null;
   }
   //-->
   </script>

   Posted 11 months ago #

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