Input validation not working with OData model

问题

In the current project, I have a SimpleForm on a view. Binding a JSONModel on this view, the validateValue function is working fine on my input field. The constraints on the input field are defined as follows:

<Input
  type="Text"
  maxLength="45"
  value="{
    path: '/carrId',
    type: 'sap.ui.model.type.String',
    constraints: {
      minLength: 1,
      maxLength: 3
    }
  }"
/>

Changing the model to an ODataModel doesn't fire the validateValue and the field is not marked with red if the constraints are not matched.

The view is registered at the message manager.

Do I have to implement the validation by implementing a change event or where is the mistake?

回答1:

Replace sap.ui.model.type.String with the type corresponding to the EDM type of your carrId. E.g. with sap.ui.model.odata.type.String if it has the Type="Edm.String" in metadata.

来源：https://stackoverflow.com/questions/47468688/input-validation-not-working-with-odata-model