51 lines
1.1 KiB
JavaScript
51 lines
1.1 KiB
JavaScript
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var _ = require('underscore');
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var Backbone = require('backbone');
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var COUNT_SQL_TEMPLATE = 'select count(*) from (<%= subquery %>) st';
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module.exports = Backbone.Collection.extend({
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url: function () {
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return this._configModel.getSqlApiUrl();
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},
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initialize: function (opts) {
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opts = opts || {};
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this._subquery = opts.subquery;
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this._configModel = opts.configModel;
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},
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fetchCount: function (callback) {
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var opts = {};
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var count = -1;
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opts.data = {
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api_key: this._configModel.get('api_key'),
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q: this._getCountSQL()
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};
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opts.method = this._httpMethod();
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opts.error = function (coll, resp) {
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callback && callback(count);
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};
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opts.success = function (coll, resp, options) {
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if (resp.rows && resp.rows.length) {
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count = resp.rows[0].count;
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}
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callback && callback(count);
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};
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return Backbone.Collection.prototype.fetch.call(this, opts);
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},
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_getCountSQL: function (excludeColumns) {
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return _.template(COUNT_SQL_TEMPLATE)({
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subquery: this._subquery
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});
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},
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_httpMethod: function () {
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return 'GET';
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}
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});
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