In my case I am using integer type for ng-model value which by default contains value as zero. The md-select should be valid but its still throwing an error that its required.
The ng-options doesn't contain any item with the value zero. Because it doesn't function it makes the whole form invalid.
This example describes how to create dependent drop-down lists in Excel. On the Data tab, in the Data Tools group, click Data Validation.
Here's what we are trying to achieve: The user selects Pizza from a drop-down list.
If you skip the messages parameter, the plugin will display default, auto-generated messages.
Both Google Sheets and Microsoft Excel support a built-in mechanism called data validation rules.
Data validation rules allow you to constrain the values that can be entered into a worksheet cell.
Do you used in-cell dropdowns in your spreadsheets? It’s both an ease-of-use and a data quality maneuver: clicking a dropdown is faster than typing a value, and it’s really hard to mis-type a value when you’re not actually typing!
I use in-cell dropdowns a lot when I’m making a list of things and I want to classify the values in the list.