Javascript 余烬-未更新多对多关系数据
我有一个扬声器模型,如下所示:Javascript 余烬-未更新多对多关系数据,javascript,ember.js,many-to-many,ember-data,Javascript,Ember.js,Many To Many,Ember Data,我有一个扬声器模型,如下所示: import attr from 'ember-data/attr'; import ModelBase from 'open-event-frontend/models/base'; import { belongsTo, hasMany } from 'ember-data/relationships'; export default ModelBase.extend({ /** * Attributes */ name
import attr from 'ember-data/attr';
import ModelBase from 'open-event-frontend/models/base';
import { belongsTo, hasMany } from 'ember-data/relationships';
export default ModelBase.extend({
/**
* Attributes
*/
name : attr('string'),
email : attr('string'),
photoUrl : attr('string'),
thumbnailImageUrl : attr('string'),
shortBiography : attr('string'),
longBiography : attr('string'),
speakingExperience : attr('string'),
mobile : attr('string'),
location : attr('string'),
website : attr('string'),
twitter : attr('string'),
facebook : attr('string'),
github : attr('string'),
linkedin : attr('string'),
organisation : attr('string'),
isFeatured : attr('boolean', { default: false }),
position : attr('string'),
country : attr('string'),
city : attr('string'),
gender : attr('string'),
heardFrom : attr('string'),
/**
* Relationships
*/
user : belongsTo('user'),
event : belongsTo('event'),
sessions : hasMany('session')
});
import attr from 'ember-data/attr';
import moment from 'moment';
import ModelBase from 'open-event-frontend/models/base';
import { belongsTo, hasMany } from 'ember-data/relationships';
import { computedDateTimeSplit } from 'open-event-frontend/utils/computed-helpers';
const detectedTimezone = moment.tz.guess();
export default ModelBase.extend({
title : attr('string'),
subtitle : attr('string'),
startsAt : attr('moment', { defaultValue: () => moment.tz(detectedTimezone).add(1, 'months').startOf('day') }),
endsAt : attr('moment', { defaultValue: () => moment.tz(detectedTimezone).add(1, 'months').hour(17).minute(0) }),
shortAbstract : attr('string'),
longAbstract : attr('string'),
language : attr('string'),
level : attr('string'),
comments : attr('string'),
state : attr('string'),
slidesUrl : attr('string'),
videoUrl : attr('string'),
audioUrl : attr('string'),
signupUrl : attr('string'),
sendEmail : attr('boolean'),
isMailSent: attr('boolean', { defaultValue: false }),
createdAt : attr('string'),
deletedAt : attr('string'),
submittedAt : attr('string', { defaultValue: () => moment() }),
lastModifiedAt : attr('string'),
sessionType : belongsTo('session-type'),
microlocation : belongsTo('microlocation'),
track : belongsTo('track'),
speakers : hasMany('speaker'),
event : belongsTo('event'), // temporary
creator : belongsTo('user'),
startAtDate : computedDateTimeSplit.bind(this)('startsAt', 'date'),
startAtTime : computedDateTimeSplit.bind(this)('startsAt', 'time'),
endsAtDate : computedDateTimeSplit.bind(this)('endsAt', 'date'),
endsAtTime : computedDateTimeSplit.bind(this)('endsAt', 'time')
});
以及会话的模型,如下所示:
import attr from 'ember-data/attr';
import ModelBase from 'open-event-frontend/models/base';
import { belongsTo, hasMany } from 'ember-data/relationships';
export default ModelBase.extend({
/**
* Attributes
*/
name : attr('string'),
email : attr('string'),
photoUrl : attr('string'),
thumbnailImageUrl : attr('string'),
shortBiography : attr('string'),
longBiography : attr('string'),
speakingExperience : attr('string'),
mobile : attr('string'),
location : attr('string'),
website : attr('string'),
twitter : attr('string'),
facebook : attr('string'),
github : attr('string'),
linkedin : attr('string'),
organisation : attr('string'),
isFeatured : attr('boolean', { default: false }),
position : attr('string'),
country : attr('string'),
city : attr('string'),
gender : attr('string'),
heardFrom : attr('string'),
/**
* Relationships
*/
user : belongsTo('user'),
event : belongsTo('event'),
sessions : hasMany('session')
});
import attr from 'ember-data/attr';
import moment from 'moment';
import ModelBase from 'open-event-frontend/models/base';
import { belongsTo, hasMany } from 'ember-data/relationships';
import { computedDateTimeSplit } from 'open-event-frontend/utils/computed-helpers';
const detectedTimezone = moment.tz.guess();
export default ModelBase.extend({
title : attr('string'),
subtitle : attr('string'),
startsAt : attr('moment', { defaultValue: () => moment.tz(detectedTimezone).add(1, 'months').startOf('day') }),
endsAt : attr('moment', { defaultValue: () => moment.tz(detectedTimezone).add(1, 'months').hour(17).minute(0) }),
shortAbstract : attr('string'),
longAbstract : attr('string'),
language : attr('string'),
level : attr('string'),
comments : attr('string'),
state : attr('string'),
slidesUrl : attr('string'),
videoUrl : attr('string'),
audioUrl : attr('string'),
signupUrl : attr('string'),
sendEmail : attr('boolean'),
isMailSent: attr('boolean', { defaultValue: false }),
createdAt : attr('string'),
deletedAt : attr('string'),
submittedAt : attr('string', { defaultValue: () => moment() }),
lastModifiedAt : attr('string'),
sessionType : belongsTo('session-type'),
microlocation : belongsTo('microlocation'),
track : belongsTo('track'),
speakers : hasMany('speaker'),
event : belongsTo('event'), // temporary
creator : belongsTo('user'),
startAtDate : computedDateTimeSplit.bind(this)('startsAt', 'date'),
startAtTime : computedDateTimeSplit.bind(this)('startsAt', 'time'),
endsAtDate : computedDateTimeSplit.bind(this)('endsAt', 'date'),
endsAtTime : computedDateTimeSplit.bind(this)('endsAt', 'time')
});
很明显,会话和演讲者有一种多对多的关系。因此,我将会话添加到演讲者,然后保存它们。这两个记录都已在服务器上成功创建,但未建立链接。我已经用postman测试了服务器端点,它工作得很好。所以,我想我错过了一些东西
这是控制器代码:
import Controller from '@ember/controller';
export default Controller.extend({
actions: {
save() {
this.set('isLoading', true);
this.get('model.speaker.sessions').pushObject(this.get('model.session'));
this.get('model.session').save()
.then(() => {
this.get('model.speaker').save()
.then(() => {
this.get('notify').success(this.get('l10n').t('Your session has been saved'));
this.transitionToRoute('events.view.sessions', this.get('model.event.id'));
})
.catch(() => {
this.get('notify').error(this.get('l10n').t('Oops something went wrong. Please try again'));
});
})
.catch(() => {
this.get('notify').error(this.get('l10n').t('Oops something went wrong. Please try again'));
})
.finally(() => {
this.set('isLoading', false);
});
}
}
});
正如@Lux在评论中提到的,默认情况下,余烬数据不序列化在所有情况下都有许多关系。这适用于所有扩展而不是重写方法的序列化程序。这是和的情况 用于确定是否应序列化多个关系的逻辑非常复杂,而且没有很好的文档记录。因此,需要了解细节 通常,只有当且仅当满足以下条件时,才会序列化具有多个关系: 如果序列化程序配置强制执行。要将序列化程序配置为强制序列化特定关系,必须包含一个关系名为的键,该键包含一个对象{serialize:true} 如果序列化程序的attrs配置未禁止。它与1相反。attrs选项包含一个关系名为的键,该键包含一个对象{serialize:false} 如果是多对无关系,则表示没有反向关系 如果是多对多的关系 根据您的问题,多对多关系没有序列化。可能有很多因素导致您的问题,但我敢打赌是这个: 若我没弄错的话,多对多关系的两个记录还并没有在服务器上持久化。我假设您不在客户端生成ID。所以两个记录在开始时都没有ID。因此,无法在首次创建此请求时序列化关系。获取“model.session”。保存。您的API对该请求的响应良好。响应包括此记录没有任何相关说话人的信息。ember数据使用API返回的信息更新其存储。此更新包括删除以前创建的关系。第二个create请求this.get'model.speaker'。save序列化关系,但不存在,因为这是存储中的当前值
如果是这种情况,您只需在分配关系之前创建一条记录,然后保存另一条记录,这将在服务器上保持关系。正如@jelhan所建议的,我必须先在模型上保存,然后添加关系。以下代码有效:
import Controller from '@ember/controller';
export default Controller.extend({
actions: {
async save() {
try {
this.set('isLoading', true);
await this.get('model.speaker').save();
this.get('model.speaker.sessions').pushObject(this.get('model.session'));
await this.get('model.session').save();
await this.get('model.speaker').save();
this.get('notify').success(this.get('l10n').t('Your session has been saved'));
this.transitionToRoute('events.view.sessions', this.get('model.event.id'));
} catch (e) {
this.get('notify').error(this.get('l10n').t('Oops something went wrong. Please try again'));
}
}
}
});
保存记录时,您在“网络”选项卡中看到了什么?关系id是否包含在请求有效负载中?@dwenzel否,事实上,在添加和保存相应的对象后,我还创建了一个console.log,但没有添加另一个对象。我认为默认序列化程序应该是这样的。您需要修改序列化程序,因为默认情况下,只有belongsTo关系被序列化。@Lux您能详细说明一下吗?