magic-models/lib/tools.js

A simple, free software magical ORM.

var each = require('each');

module.exports.escapeValue = function(orm, value) {
    return '"' + (typeof(value) == 'string' ? orm.client.escape(value) : value + '') + '"';
}

module.exports.validate = function(orm, model, data, errors, callback) {
    each(model.fields)
	.on('item', function(fieldName, field, cb) {
	    if (field.validate) {
		each(field.validate)
		    .on('item', function(rule, i, cb) {
			if (data[fieldName] === undefined) {
			    cb();
			}
			else {
			    var message = rule.msg || 'Rule "' + rule.name + '" for field `' + fieldName + '` has not been successfully validated.';
			    rule.fun({
				data: data,
				model: model,
				checkedField: {
				    name: fieldName,
				    val: data[fieldName]
				},
				rule: {
				    name: rule.name,
				    val: rule.val
				},
				msg: message
			    }, function(check) {
				if (!check)
				    errors.push(message);
				cb();
			    });
			}
		    })
		    .on('end', function() {
			cb();
		    });
	    }
	    else
		cb();
	})
	.on('end', function() {
	    if (errors.length > 0)
		callback(undefined, errors);
	    else
		callback(true);
	});
}

module.exports.validateAll = function(orm, model, data, callback) {
    var errors = [];
    each(model.fields)
	.on('item', function(fieldName, field, cb) {
	    if (field.required && (data[fieldName] === undefined
				   || data[fieldName] === null)) {
		var message = typeof(field.required) != 'string' ? 'Field `' + fieldName + '` is required.' : field.required;
		errors.push(message);
	    }
	    cb();
	})
	.on('end', function() {
	    module.exports.validate(orm, model, data, errors, callback);
	});
}