Constraint enforcement in forms
When collecting data, you may want to apply constraints to certain field(s) so that the correct information is entered.
QGIS
To set up the default value for x field:
- Download and open this example project in QGIS
- From the layer panel, right-click on survey layer and select Properties
- In the new window, select Attributes form
- Select number field under the right column (Available Widgets)
- Under the Constraints:
- Select Not null
- Select Enforce not null constraints
- For Expression type “number” >= 1
- Select Enforce expression constraint
Input
In Input:
- Open Input on your device and from Projects > Explore download documentation\form_setup
- Open the project
- Select Record and add a point
- The form will appear
- Under Data tab, you need to set the Number of plants: and the value should be more than or equal 1.