In crowbar for each barclamp we can change some attributes using comfortable UI fields, but sometimes we need to change some attributes that aren't defined in these fields therefore we have to manipulate a json in a text area to change them.

I propose user-friendly method to set these attributes: Selecting the attribute you want to change and setting the value.

I imagine something like that:

:

The combo with all attributes can be represent the tree structure of the data. The input for the value can perform some validations using the attributes scheme (already defined)