112 lines
2.9 KiB
JavaScript
112 lines
2.9 KiB
JavaScript
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var _ = require('underscore');
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var BaseModel = require('builder/components/custom-list/custom-list-item-model');
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var $ = require('jquery');
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var cdb = require('internal-carto.js');
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var checkAndBuildOpts = require('builder/helpers/required-opts');
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var REQUIRED_OPTS = [
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'configModel',
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'nodeDefModel'
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];
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var MEASUREMENT_ATTRIBUTES = ['aggregate', 'type', 'label', 'val', 'description', 'filter', 'license'];
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var MEASUREMENT_BY_ID = 'SELECT numer_id, numer_name, numer_description, numer_type, numer_aggregate, numer_tags FROM _OBS_GetNumerators((SELECT ST_SetSRID(ST_Extent(the_geom), 4326) FROM ({{{ query }}}) q), section_tags => {{{ area }}}, ids => {{{ measurement }}})';
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module.exports = BaseModel.extend({
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initialize: function (attrs, options) {
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checkAndBuildOpts(options, REQUIRED_OPTS, this);
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this._querySchemaModel = this._nodeDefModel.querySchemaModel;
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var configModel = options.configModel;
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this.SQL = new cdb.SQL({
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user: configModel.get('user_name'),
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sql_api_template: configModel.get('sql_api_template'),
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api_key: configModel.get('api_key')
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});
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BaseModel.prototype.initialize.call(this, attrs, options);
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},
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fetch: function (options) {
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var defaults = {
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area: null,
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measurement: null,
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query: this._querySchemaModel.get('query')
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};
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this.deferred = $.Deferred();
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var queryOptions = _.defaults(options, defaults);
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this.set('state', 'fetching');
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this.SQL.execute(MEASUREMENT_BY_ID, queryOptions, {
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success: function (data) {
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this._onFetchSuccess(data);
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this.set('state', 'fetched');
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this.deferred.resolve();
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}.bind(this),
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error: function () {
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this.set('state', 'error');
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this.deferred.reject();
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}.bind(this)
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});
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return this.deferred.promise();
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},
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isFetching: function () {
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return this.getState() === 'fetching';
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},
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getState: function () {
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return this.get('state');
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},
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_onFetchSuccess: function (data) {
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var model = _.first(data.rows);
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if (!model) {
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this._clear();
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return;
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}
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var o = {};
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// label and val to custom list compatibility
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o.val = model.numer_id;
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o.label = model.numer_name;
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o.description = model.numer_description;
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o.type = model.numer_type;
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o.aggregate = model.numer_aggregate;
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// a measurement can belong to more than one category (filter)
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o.filter = [];
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var tags = model.numer_tags;
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if (!_.isObject(tags)) {
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tags = JSON.parse(tags);
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}
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for (var key in tags) {
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if (/^subsection/.test(key)) {
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o.filter.push({
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id: key,
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name: tags[key]
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});
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}
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if (/^license/.test(key)) {
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o.license = tags[key];
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}
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}
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this.set(o);
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},
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_clear: function (options) {
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var attrs = MEASUREMENT_ATTRIBUTES.reduce(function (memo, attr) {
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memo[attr] = null;
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return memo;
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}, {});
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this.set(attrs, {silent: true});
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}
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});
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