Are there any examples of creating a custom widget for multiple select choice fields for the Module Builder?
I am trying out the Module Builder for the first time. I need to throw together something to allow a user to multi-select from a static list of 236 items. I saw the Choices data type and added in 30 or so items to test it out. I set to Multiple choices can be selected and set to Checkboxes. After clicking finish the module did not appear on the Content drop down. I figured out this was due to multi-site settings and after fixing this found the module.
All seems to be working, but I have just a single column of checkboxes for the choices data type. For 30 checkboxes this is annoying, for 236 it won't work at all. I need to find a way to add in multiple columns and at least a select all and deselect all buttons. So, I went back in and tried to create again and pick custom. I just get a text box to enter the virtual path of the custom widget. I then hit a wall searching for how do I create this custom widget??