Mat List Option Value

Before implementing this example create a new angular component with the name nested.

Mat list option value. Medication assisted treatment mat is the use of medications in combination with counseling and behavioral therapies to provide a whole patient approach to the treatment of substance use disorders. To set select option selected in reactive form we can use setvalue and patchvalue of formgroup. On first mat select selection it send the value to the second mat select options and so on. Mat option ngfor let option of options value option value option label translate mat option the current selected option is shown the moment the mat select gets focus.

To work with angular material select we need to import matselectmodule in application module file. This way our custom component will appear as the first item in the list. The content of the mat option is what will be shown to the user. To set and get a value for mat select use value ngmodel formcontrol and formcontrolname property.

Loop through the options and determine which one is selected and return either its value or a reference. We cannot omit any form control in setvalue but when we want to assign only few form controls of formgroup then we need to use patchvalue. Each mat option has a value property that can be used to set the value that will be selected if a user chooses this option. Depending on a use case it is good to know that initializing some default options as selected might not work by simply binding to the ngmodel because default values are different object instances than those in the options array.

Do as the previous component to register this new component to the routing and main component. Use the value property of the select list. To add elements to select option we need to use mat option element and to bind value with mat option use value property of it. Use the selectedindex property.

Above the loop for generating options add the app select check all component. The setvalue sets the value in each and every form control of formgroup. There are a variety of ways to use javascript to obtain the value of the selected option in a select list or a reference to the selected option. Don t forget to pass in the form control value and the full list of values into app select check all component.

Mat select does not show the current selected option on page load if a mat option has some async behaviour in my case the translate pipe. Angular material also supports use of the native select element inside of mat form field. Medications used in mat are approved by the food and drug administration fda and mat programs are clinically driven and tailored to meet each patient s needs.