使用Ember设置多个数据，并使其在Firebase上持续存在 [英] Set multiple data with Ember and make it persist on Firebase

问题描述

我正在尝试从两个模型中设置数据（已经拥有多个属性关系）并将其保存到firebase。

I am trying to set data from two models (that has hasMany & belongsTo relationship) and save them to firebase.

'list'数据最终被保存到firebase而不是用户数据。

'list' data ends up being saved to firebase but not user data.

我觉得我在第3步做错了，我很感谢你的帮助！

I think I'm doing something wrong at step 3. I'd appreciate your help!

import Ember from 'ember';

export default Ember.Route.extend({
    model: function() {
        return this.store.find('list');
    },
actions: {
    createList: function() {
        var newListTitle = this.controllerFor('lists').get('newListTitle');
        var username = this.get('session.user.displayName');
        alert(this.get('session.user.displayName'));

        if (Ember.isBlank(newListTitle)) { return false; }

    //1
        var list = this.store.createRecord('list', {
            title: newListTitle,
            user: username,
        });

    //2
        this.controllerFor('lists').set('newListTitle', '');

        var _this = this;

    //3
            list.save().then(function(list) {
                user.get('lists').addObject(list);
                user.save();
                _this.transitionTo('lists.show', list); //4
            });

        }
    }
});

推荐答案

重新构建您的添加逻辑以及用户定义的模型，还修改了您的路线，在编辑和查看模式下可能看起来像这样。意思是可以从model返回多个项目。

Restructured your adding logic as well as user defined models, also modified your route, which could look like this in Edit and View mode. Meaning you can have more than one item returned from "model".

// Update models

App.List = DS.Model.extend({
     value:     DS.attr('string')
});

App.User = DS.Model.extend({
    name:   DS.attr('string')
});

App.UserLists = DS.Model.extend({
   user: DS.belongsTo('user'),
   list: DS.belongsTo('list')
});



    export default Ember.Route.extend({
        LIST:SHOW ROUTE
        model: function(params) {

            var store = this.get('store');
            var userPromise = store.find('user', params.id);

            return Ember.RSVP.hash({
                user: userPromise,
                userList : userPromise.then(function(user) {
                    return store.find(userList, { WhereUserIdIs : user.get('id') })
                });
            });
        },
    actions: {
        createList: function() {
            var self = this;

            var failure = function(reason) {
                // handle stuff
            };

            var list = this.store.createRecord('list', {
                title: this.get('title'),
            });

            var user = this.get('user');

            var usersList = store.createRecord('userList', {
                'user': user,
                'list': list
            });

            list.save().then(function(list) {
                user.save().then(function() {
                    userList.save().then(function() {
                        self.transitionTo('lists.show', list.get('id'));
                    }, failure);
                }, failure);
            }, failure);

        }
    });

这篇关于使用Ember设置多个数据，并使其在Firebase上持续存在的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！