Documentation Index
Fetch the complete documentation index at: https://filla.io/docs/llms.txt
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What this does
Conditional read-only lets you lock a field based on conditions. When the conditions are met, the field is visible but cannot be edited. It behaves like a read-only display. When the conditions are not met, the field is editable normally. This is different from the static Read-only toggle, which always locks the field.When to use it
- Lock a “Price” field once a status field is set to “Approved”
- Prevent editing an email field if it was pre-filled via URL
- Lock a “Quantity” field after a “Confirmed” checkbox is checked
- Protect a calculated field from being overridden in certain states
Setting up conditional read-only
Expand the Conditional read-only section
Expand the Conditional read-only section in the settings panel.
Settings
| Setting | Description |
|---|---|
| Read-only rule | Toggle to enable conditional locking for this field. |
| Read-only when… | Filter builder defining the conditions that lock the field. Only visible when the toggle is on. |
How it differs from display conditions
| Feature | Conditional visibility | Conditional read-only |
|---|---|---|
| When conditions are met | Field is hidden | Field is visible but locked |
| Respondent sees the field | No | Yes |
| Value can be edited | N/A (field not visible) | No |
| Value is submitted | No | Yes (existing value is preserved) |
Common questions
What happens to the field's value when it's locked?
What happens to the field's value when it's locked?
The existing value is preserved and submitted as-is. If the field was pre-filled (via default value or URL parameter), that pre-filled value is submitted. If it was blank, it submits blank.
Can I combine conditional read-only with conditional visibility?
Can I combine conditional read-only with conditional visibility?
Yes. You could use conditional visibility to show the field based on one condition, and conditional read-only to lock it based on a different condition. Both can be active on the same field.
Does the read-only tag appear in the editor?
Does the read-only tag appear in the editor?
Yes. When a field has conditional read-only enabled, a Conditional lock (slate) tag appears in the top-right corner of the field card in the editor canvas.