Why Does the Open Record Button Disappear on Read-Only Fields?

[Rogers Cadenhe1]

I have a table with a reference field labeled SDN. I need that field to have a circled-i button next to it so the referenced record can be previewed and opened. Like this:

I want this field to be read-only, since there's no reason a user should be editing it. But when I make the field read-only, through changing the dictionary entry, adding a UI policy or using ACLs, the circled-i button disappears:

The Match field above it is a Document ID field that still has the circled-i button despite being read-only.

What controls the logic of a circled-i button being present or absent next to a reference field?

[brianlan25 · Accepted solution]

Try adding readonly_clickthrough=true to the field attribute.  To get to this right click on the field and choose configure > dictionary.

[Rogers Cadenhe1]

Thanks. That worked!

I looked through the dictionary attributes hoping to find a solution but that one wasn't documented.

[brianlan25]

Yes I noticed that too.  I couldn't find it any more.  I had to look thought so old posts of mine as I did not remember exactly what the attribute was.

[Jared Healy2]

Just came across this issue... this was very helpful, thanks!