To control whether and when a value can be edited in a form, use the Editable_If expression, which is part of the column definition. Editable_If is a column constraint that you define by using the Columns pane of the app editor. It tells the system if a particular value of a particular row can be edited.
Some examples are provided below based on specific scenarios.
Scenario 1: I have a building assessment app with 10 questions. I want the fields to be editable until the user presses save. Once saved, I want the fields to no longer be editable.
Resolution: Set the Editable_If expression to ISBLANK([_THIS]). This means you can edit the value only if it is blank. After the users presses save, the fields are not blank and therefore not editable.
Scenario 2: I have a building assessment app with 10 questions. I want the fields to be editable until the assessment is marked Complete. Once saved, I want the fields to no longer be editable.
Resolution: Set the Editable_If expression to NOT ([Status] = "Complete").
Scenario 3: I have a building assessment app with 10 questions. I want the fields to be editable until the assessment is marked Complete. Once saved, I want the fields to no longer be editable by anyone other than Bob.
Resolution: Set the Editable_If expression to OR ( NOT([Status] = "Complete"), USEREMAIL() = "bob@mydomain.com")