If you want to integrate material autocomplete functionality in angular 6 7 8 this tutorial will work with every version.
Mat autocomplete select event.
Angular material select provides selectionchange event that emits when the selected value has been changed by the user.
Using mat autocomplete of material2.
Bug feature request or proposal.
According to materials documentation optionselected emits an event.
If you want to toggle mat select autocomplete from your own component event you need to import multiselectcomponent in the component and take it s reference as viewchild element eg.
The event selectionchange is used with mat select element as following.
I am using an autocomplete mat autocomplete and at the moment it allows loading a list of users.
In autocomplete i want to display the username but i want to save the value of that chosen user id.
Now it s possible to recognize when the item is selected or deselected.
I know that value stores the selected object offer in my case.
The onselectionchange event replaced the selected event.
On blur of the input validate function is called to check if the user wrote a valid value without selecting it in the list.
If yes then it is being sel.
Now it s possible to recognize when the item is selected or deselected.
This allfruits val map user user username.
So when you select any option the displaywith directive triggers the displayfn function which takes the object as an argument and returns the string based on the selected value.
One with isuserinput true and one with false.