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What should the options attribute be in Lightning combobox?
The main caveat here is what you’re passing to options attribute of the : rolesList.data.values. It’s most likely that your controller method is returning a List , which is interpreted as an array of strings on the receiving end.
How to check validity of input in Lightning?
An error message is automatically displayed when an item is not selected and the element is required. To check the validity states of an input, use the validity attribute, which is based on the ValidityState object. You can access the validity states in your Javascript. This validity attribute returns an object with boolean attributes.
How to create an array in Lightning component?
As per the doc ‘s JS example, it accepts an array of objects that have label and value keys. Now, it’s not very convenient to generate that in Apex, rather I would make this array in the component’s JS file’s @wire -provisioned function.
How to populate combo box values in Salesforce?
Though I am late in answering this question, but here is the other approach to populate combo box values. Here retrieve UserRole records based on SOQL query and no data transformation in this class In this class, inside wiredUserRoles () method, perform data transformation for value and label.
How to support multiple selection in Salesforce Lightning?
To support multiple selection, use lightning-dual-listbox instead. This component implements the combobox blueprint in the Salesforce Lightning Design System. This example creates a list of options with a default selection that’s specified with the value attribute. The options attribute specifies the name of an array of items for the dropdown list.
How is the result of a selection stored in Lightning?
The result of the selection is stored as the value of the input. Multiple selection is currently not supported. To support multiple selection, use lightning-dual-listbox instead. This component implements the combobox blueprint in the Salesforce Lightning Design System.
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