问题
I am trying to do it in proper way with less pain, but i can't figure out how to deal with ng-model and binding it to the selected list etc and moreover i need to populate that list in later time and keep selected objects in it.
categories = [ { "name": "Sport", "id": "50d5ad" } , {"name": "General", "id": "678ffr" } ]
<span ng-repeat="category in categories">
<label class="checkbox" for="{{category.id}}">
<input type="checkbox" value="{{category.id}}" ng-model="??" ng-click="??" name="group" id="{{category.id}}" />
{{category.name}}
</label>
</span>
I have to override the categories each time the list is populated since it will be pulled out from a server.
So I guess I need to have arrays and the second one will hold the selected objects?
If I am right, how do I preselect checkboxes?
Do I need ng-click in order call custom function to store the selected object in the other array?
Do I need ng-model in checkbox And what for?
What is the proper-way with less pain?
回答1:
I have to override the categories each time the list is populated since it will be pull out form server. So i quess i need to have arrays and the second one will hold the selected objects?
Yes, since it is a list you can/should use arrays. The information about the selected items/objects should be stored on your scope model (example below).
If I am right, how do I preselected checkboxes?
Save the ID's of the selected options/checkboxes on your model and let the ng-model do the rest.
Do I need ng-click in order call custom function to store the selected object in the other array?
No, you don't need it, ng-model is enough.
Do i need ng-model in check box? And what for?
Yes, you need it. The ng-model is responsible for storing the selected options on your model and for making the ('pre-')selection automatic.
jsfiddle http://jsfiddle.net/bmleite/PQvQ2/
来源：https://stackoverflow.com/questions/14834300/angularjs-checkbox-ng-repeat-and-selected-objects