django Method for Obtaining value and id of from Form multiple select

As shown below:

<select id="host_list" name="host_list" multiple>
  {% for op in host_list %}
    <option id="{{ op.nid }}">{{ op.hostname }}</option>
  {% endfor %}
</select>

1. When the value of the selected option needs to be obtained,

Need to be set to id= "{{op. nid}}",

django Views Get the selected value is host_value=request. POST. getlist ("host_list")

The obtained value of the selected option;

2. When the id of the selected option needs to be obtained,

It needs to be set to value= "{{op. nid}}",

django Views Get the selected value is host_id=request. POST. getlist ("host_list")

The obtained id is the selected option;