Placeholder text in enumeration/association - Mendix Forum

Placeholder text in enumeration/association

8

When you have an enumeration field, it would be handy to have a configurable text in there when it's empty. Something like: "please select"

 

 

asked
7 answers

Hi Eric Tieniber,

I am trying to implement this solution in Mendix 6.2.1.

I am facing issues while implementing this.

I am getting an error message as ''Error while evaluating javascript input: TypeError: Unable to get property 'getAttribute' of undefined or null reference".

Please let me know, what might be the issue.

Thanks in advance

Created

Eric - I am trying to upgrade my current application from 6.9.0 to 7.6.0 modeler version and I have used the earlier script which you provided to remove the blank Options in drop down for 6.9.0 and it works.

Issue: Now when i am using the below code which is provided to remove blank options,

var selector;
selector = dijit.registry.byNode(this.domNode.previousSibling);
if (typeof selector === "undefined") {
       selector = dijit.registry.byNode(this.domNode.previousSibling.children[1]);
}
 
define(["dojo/aspect"], function(aspect){
  aspect.after(selector, "_renderOptions", function(deferred){
       this._editNode.removeChild(this._editNode.children[0]);
       return deferred;
   });
});

I observed that the code from "define" is not executing and it is because the functions is not identified.

Please suggest the changes which i can incorporate to make this work.

Created

Kudos for sharing, Eric!

Created

Updated sample code for Mendix 7:

var selector;
selector = dijit.registry.byNode(this.domNode.previousSibling);
if (typeof selector === "undefined") {
       selector = dijit.registry.byNode(this.domNode.previousSibling.children[1]);
}
 
define(["dojo/aspect"], function(aspect){
  aspect.after(selector, "_renderOptions", function(deferred){
       this._editNode.removeChild(this._editNode.children[0]);
       return deferred;
   });
});

 

Created

Temporary solutions below. Add an HTMLSnippet snippet widget after your reference selector.

To remove the blank option (tested and cross-browser compatible):

var selector;
selector = dijit.registry.byNode(this.domNode.previousSibling);
if (typeof selector === "undefined") {
       selector = dijit.registry.byNode(this.domNode.previousSibling.children[1]);
}
 
dojo.require("dojo.aspect");
dojo.aspect.after(selector, "_renderOptions", function(deferred){
       this._editNode.removeChild(this._editNode.children[0]);
       return deferred;
});

 To set the blank option's text (untested - if syntax is correct it should work):

var selector;
selector = dijit.registry.byNode(this.domNode.previousSibling);
if (typeof selector === "undefined") {
       selector = dijit.registry.byNode(this.domNode.previousSibling.children[1]);
}
 
dojo.require("dojo.aspect");
dojo.aspect.after(selector, "_renderOptions", function(deferred){
       this._editNode.children[0].innerHTML = "<Please enter a value>";
       return deferred;
});

 

Created

When I set the default value to enumration, as a user, I must have the ability to Include/exclude blank values from the dropdown list. 

Created

I also requested this one but on the dropdown widget itself because sometimes the placeholder text can be different per page. 

please see https://forum.mendix.com/link/ideas/22 

Created