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totalResourceCount.js
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totalResourceCount.js
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import DefineMap from 'can-define/map/map';
import connect from 'can-connect';
import get from 'can-util/js/get/get';
/**
* @constructor util/behaviors/totalResourceCount.MetadataMap MetadataMap
* @parent util/behaviors/totalResourceCount.types
*/
export const MetadataMap = DefineMap.extend('Metadata', {
total: {
type: 'number',
value: 0
}
});
/**
* Add the total count of objects available to the connection's metadata
* @module {Behavior} util/behaviors/totalResourceCount totalResourceCount
* @description Adds a total resource count property to an observable
* `connection.metadata` object on `getListData` requests. This total
* property reflects the total number of objects available
* given the current filters. The total property allows spectre-canjs
* to calculate a total number of pages available.
* @parent util/behaviors
* @group totalResourceCount.props Properties
* @group totalResourceCount.types Types
*/
export default connect.behavior('totalResourceCount', function (base) {
return {
/**
* The name of the property to lookup in the get request. The default
* is `'total'`. Values may be nested, and use the dot operator, for example,
* total values could be in a nested object and accessed like `metadata.total`
* @property {String} totalResourceCount.props.totalProperty totalProperty
*/
totalProperty: 'total',
init () {
this.metadata = new MetadataMap();
base.init.apply(this, arguments);
},
getListData () {
const promise = base.getListData.apply(this, arguments);
promise.then((result) => {
this.metadata.total = get(result, this.totalProperty);
});
return promise;
}
};
});