all files / fc-er/ datasource.js

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Iif (typeof define !== 'function') {
    var define = require('amdefine')(module);
}
 
define(function (require) {
    'use strict';
 
    var util = require('./util');
 
    var constant = function constant(value) {
        return function () {
            return value;
        };
    };
 
    var remote = function remote(url, options) {
        return function (model) {
            options = util.mix({ url: url, dataType: 'json' }, options);
 
            if (typeof options.data === 'function') {
                options.data = options.data(model);
            }
            var ajax = require('./ajax');
 
            return ajax.request(options);
        };
    };
 
    var permission = function permission(name, permissionProvider) {
        return function () {
            permissionProvider = permissionProvider || require('./permission');
            permissionProvider.isAllow(name);
        };
    };
 
    var defaultValue = function defaultValue(_defaultValue, name) {
        return function (model, options) {
            if (!options.name && !name) {
                throw new Error('No property name specified to determine whether value exists in this model');
            }
 
            var propertyName = name || options.name;
 
            return model.hasValue(propertyName) ? model.get(propertyName) : _defaultValue;
        };
    };
 
    var convertTo = function convertTo(type, name) {
        return function (model, options) {
            if (!options.name && !name) {
                throw new Error('No property name specified to convert');
            }
 
            var property = name || options.name;
            var value = model.get(property);
 
            switch (type) {
                case 'number':
                    return parseInt(value, 10);
                case 'string':
                    return value + '';
                case 'boolean':
                    return !!value;
                default:
                    return value;
            }
        };
    };
 
    return { constant: constant, remote: remote, permission: permission, defaultValue: defaultValue, convertTo: convertTo };
});
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