"Interface Definition: Expression evaluation error at function a!dashboardLayout [line 9]:"

Question

Hello, I am on Appian 7.5. I want to create editable grid which will have data from the database. I had followed the example given in the SAIL Recipes. But, somehow I couldn't get it to work. Either I get the empty table, or I get this error "Interface Definition: Expression evaluation error at function a!dashboardLayout [line 9]:" (Note: I have tried using formLayout as well, with the same error) I am attaching the rule files. Let me know whether I am missing anything!... 
 EditableGrid1.txt 
 OriginalPostID-111351 
 OriginalPostID-111351

Tim · Accepted Answer

To start with you have defined 7 header cells but you only create 6 components in the sub-rule.
Also, have a look at your use of a!applyComponents and read the docs on partial evaluation as it's key to what you are trying to achieve.

forum.appian.com/.../SAIL_Recipes
Yours should look like this:
a!applyComponents(
function: rule!RowPrototype(
items: local!datasubset.data,
index: _)
array: 1+enumerate(count(local!datasubset.data))
)

Tim · Answer

The saving will have to be done via process. Each of the examples in the SAIL recipes has a section called "To write your data to process" and how it needs to be setup. Also see forum.appian.com/.../Process_Model_Tutorial