Initial commit

lib/assets/javascripts/builder/data/query-column-model.js

@@ -0,0 +1,101 @@
+var _ = require('underscore');
+var Backbone = require('backbone');
+var DEACTIVATE_MATRIX = {
+  'number': ['date'],
+  'boolean': ['date'],
+  'date': ['boolean']
+};
+var DESTRUCTIVE_MATRIX = {
+  'string': {
+    'string': false,
+    'number': true,
+    'date': true,
+    'boolean': true
+  },
+  'number': {
+    'string': false,
+    'number': false,
+    'date': true,
+    'boolean': true
+  },
+  'date': {
+    'string': false,
+    'number': true,
+    'date': false,
+    'boolean': true
+  },
+  'boolean': {
+    'string': false,
+    'number': false,
+    'date': true,
+    'boolean': false
+  }
+};
+var NON_EDITABLE_ATTRIBUTES = [
+  'the_geom_webmercator',
+  'cartodb_id',
+  'the_geom'
+];
+
+module.exports = Backbone.Model.extend({
+
+  url: function () {
+    if (this._tableName) {
+      var baseUrl = this._configModel.get('base_url');
+      var version = this._configModel.urlVersion('column');
+      var url = baseUrl + '/api/' + version + '/tables/' + this._tableName + '/columns/';
+
+      if (!this.isNew()) {
+        // If name changes, we should point to the "old" name
+        // in order to make the correct call
+        url += this.previous('name') || this.get('name');
+      }
+
+      return url;
+    }
+
+    return false;
+  },
+
+  parse: function (attrs) {
+    return {
+      name: attrs.name,
+      type: attrs.cartodb_type || attrs.type,
+      isNew: false
+    };
+  },
+
+  initialize: function (models, opts) {
+    if (!opts.configModel) throw new Error('configModel is required');
+
+    this._tableName = opts.tableName;
+    this._configModel = opts.configModel;
+  },
+
+  isNew: function () {
+    return this.get('isNew');
+  },
+
+  isEditable: function () {
+    return !_.contains(NON_EDITABLE_ATTRIBUTES, this.get('name'));
+  },
+
+  // This is relative becuase we could set any value to cartodb_id
+  isCartoDBIDColumn: function () {
+    return this.get('name') === 'cartodb_id' && this.get('type') === 'number';
+  },
+
+  isGeometryColumn: function () {
+    return this.get('type') === 'geometry';
+  }
+}, {
+  isTypeChangeDestructive: function (type, newType) {
+    return DESTRUCTIVE_MATRIX[type][newType];
+  },
+
+  isTypeChangeAllowed: function (type, newType) {
+    var deactivated = DEACTIVATE_MATRIX[type] || [];
+    deactivated = deactivated.concat([type]);
+    return !_.contains(deactivated, newType);
+  }
+});