- Updated objection, knex, liquidjs, signale and sqlite3 packages

- Changes for objection migration
- Moved common access template code to an include
- Fixed access rules configuration generation

backend/lib/utils.js

@@ -1,6 +1,8 @@
-const exec     = require('child_process').exec;
-const execFile = require('child_process').execFile;
-const logger   = require('../logger').global;
+const _          = require('lodash');
+const exec       = require('child_process').exec;
+const execFile   = require('child_process').execFile;
+const { Liquid } = require('liquidjs');
+const logger     = require('../logger').global;
 
 module.exports = {
 
@@ -36,5 +38,64 @@ module.exports = {
 				}
 			});
 		});
+	},
+
+	/**
+	 * Used in objection query builder
+	 *
+	 * @param   {Array}  omissions
+	 * @returns {Function}
+	 */
+	omitRow: function (omissions) {
+		/**
+		 * @param   {Object} row
+		 * @returns {Object}
+		 */
+		return (row) => {
+			return _.omit(row, omissions);
+		}
+	},
+
+	/**
+	 * Used in objection query builder
+	 *
+	 * @param   {Array}  omissions
+	 * @returns {Function}
+	 */
+	omitRows: function (omissions) {
+		/**
+		 * @param   {Array} rows
+		 * @returns {Object}
+		 */
+		return (rows) => {
+			rows.forEach((row, idx) => {
+				rows[idx] = _.omit(row, omissions);
+			});
+			return rows;
+		}
+	},
+
+	/**
+	 * @returns {Object} Liquid render engine
+	 */
+	getRenderEngine: function () {
+		const renderEngine = new Liquid({
+			root: __dirname + '/../templates/'
+		});
+
+		/**
+		 * nginxAccessRule expects the object given to have 2 properties:
+		 *
+		 * directive  string
+		 * address    string
+		 */
+		renderEngine.registerFilter('nginxAccessRule', (v) => {
+			if (typeof v.directive !== 'undefined' && typeof v.address !== 'undefined' && v.directive && v.address) {
+				return `${v.directive} ${v.address};`;
+			}
+			return '';
+		});
+
+		return renderEngine;
 	}
 };