Utilize typeahead bootstrap to automatically activate when an item is selected or highlighted from the dropdown menu, retrieving the selected value

When utilizing typeahead bootstrap, my goal is to trigger an action when an item is selected or focused from the menu, allowing me to assign a specific value connected to the selected item.

To fully grasp my intention, please refer to the comments within the code snippet provided below:

element.typeahead({
    minLength: 3,
    source: function () {
        // users refers to a Backbone.Collection
        users = _.map(users, function(user) {
            return user.get('first_name')+' '+user.get('last_name');
        });

        return users;

    }
}).change(function (event) {
        // This particular function gets executed once a user has set a value.
        // It needs to access the user.get('id') of the selected user.
        // Any suggestions on how this can be achieved?
});

Answer №1

If you're looking to enhance your Typeahead functionality, consider using a helpful extension that enables calling remote data sources. This extension incorporates an onselect() callback function for custom actions.

To access the typeahead extension, visit this link: typeahead extension GIST

Included below is a snippet of sample code for implementation:

    initialization: function() {
        this.user = new User();
        // Obtain user information or details
    },
    initTypeahead: function() {
        var self = this;
        var element = this.$('#input');

        element.typeahead({
            source: userCollection.toJSON(),
            property: 'name',
            onselect: function(userObj) {  // Key line for customization
                var userModel = userCollection.get(userObj.id);
                // Implement necessary logic with userModel
            }
        });
    }

In my own experience, I fetch JSON from my database and assign selection values based on the retrieved data. By utilizing onselect(obj), you can pass relevant data into the callback function, allowing for flexible handling such as attaching it to input elements or applying custom processes with existing user data like user.id. Ensure user.id is appropriately scoped within your onselect() function for seamless integration.

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