Form bindings

Use form bindings when field values need to come from dynamic data.

Common uses include:

• Default values
• Dynamic labels and placeholders
• On change actions
• Conditional UI
• Filtering

Read values into a form

Bind a field to query output, app state, or a repeater when you want the form to load existing data.

Write values from a form

Use form field bindings in create queries or save actions to pass submitted values into the database or API request.

On change

Use On change when a field should update another field or trigger an action as soon as its value changes.

Common uses include:

• Calculating derived values
• Updating helper fields
• Showing or hiding controls based on the selected value

Good practice

• Keep binding names stable
• Use default values for loaded data
• Use Configure validation when user input must match a rule

Related pages

• Forms
• Bindings
• App state
• Form validation