为什么Ember会抛出＆＃34; Uncaught Error：断言失败：在被破坏的对象上调用set＆＃34;在ember.js：3722？

Question

我正在尝试使用Ember.js / Ember Data开发表单 - 这是版本信息：

DEBUG：-------------------------------

DEBUG：Ember：1.7.0

DEBUG：Ember数据：1.0.0-beta.9

DEBUG：把手：1.3.0

DEBUG：jQuery：2.1.1

DEBUG：-------------------------------

我的主要车把模板定义为：

<script type="text/x-handlebars" data-template-name="profiles">
<div class="row">
    <div class="content-header">
        <h1 class="box-title">
            <%= displayName %>
            <div class="pull-right">
                <button class="btn bg-olive btn-sm" style="margin-top:-5px;" {{action "save"}}>Save Profile Changes</button>
                <button class="btn bg-orange btn-sm" style="margin-top:-5px;" {{action "cancel"}}>Cancel Changes</button>
            </div>
        </h1>
    </div>
</div>
<div class="row" style="margin-top:10px;">
    <div class="col-md-3">
        {{view "personalInformation"}}
    </div>
    <div class="col-md-3">
        {{view "contactInformation"}}
    </div>
    <div class="col-md-3">
        {{view "addressInformation"}}
    </div>
    <div class="col-md-3">
        {{view "emergencyContactInformation"}}
    </div>
</div>
</script>

视图是单独定义的。 基本的个人信息把手模板视图定义：

<script type="text/x-handlebars" data-template-name="personal-information">
<div class="box box-primary">
    <div class="box-header">
        <h3 class="box-title">Personal Information</h3>
    </div>
    <form role="form">
    <div class="box-body">
        <div class="form-group">
            <label for="input-firstName">First Name</label>
            {{input type="text" class="form-control" placeholder="First/Given Name" value=firstName}}
        </div>
        <div class="form-group">
            <label for="input-middleNames">Middle Names</label>
            {{input type="text" class="form-control" placeholder="Middle Name(s)" value=middleNames}}
        </div>
        <div class="form-group">
            <label for="input-lastName">Last Name</label>
            {{input type="text" class="form-control" placeholder="Last/Family Name" value=lastName}}
        </div>
        <div class="form-group">
            <label for="input-suffix">Suffix</label>
            {{input type="text" class="form-control" placeholder="Suffix" value=suffix}}
        </div>
        <div class="form-group">
            <label for="input-dob">Date of Birth</label>
            {{input type="text" class="form-control" placeholder="dd/mm/yyyy" value=formattedDoB}}
        </div>
        <div class="form-group">
            <label for="select-gender">Gender</label>
            {{view Ember.Select class="form-control" content=genders value=gender}}
        </div>
    </div>
    </form>
</div>
</script>

Portal.PersonalInformationView = Ember.View.create({
    'templateName': 'personal-information'
});

联系信息手柄模板/视图定义：

<script type="text/x-handlebars" data-template-name="contact-information">
<div class="box box-primary">
    <div class="box-header">
        <div class="pull-left"><h3 class="box-title">Contact Information</h3></div>
        <div class="pull-right box-tools"><button type="button" class="btn btn-default btm-sm" {{action "addContact"}}>+</button></div>
    </div>
    <form role="form">
    {{#each contacts}}
    <div class="box-body bg-gray" style="margin-bottom:5px;">
        <div class="form-group">
            <div class="pull-left">
                {{view Ember.Select class="form-control" content=contactTypes value=type}}
            </div>
            <div class="pull-right box-tools">
                <a><i id="italic_toggle_contact_{{unbound id}}" class="fa fa-chevron-circle-down fa-2x text-blue"></i></a>
                <a><i class="fa fa-trash-o fa-2x text-orange" {{action "deleteContact" id}}></i></a>
            </div>
            <div>&nbsp;</div>
        </div>
        <div id="div_toggle_contact_{{unbound id}}" class="form-group" style="display:none;">
            <div class="pull-left" style="margin-top:3px;">
                {{view Ember.Select class="form-control" content=countryCodes value=code}}
            </div>
            <div class="pull-left" style="margin-top:3px;">
                {{input type="text" class="form-control" value=number}}
            </div>
            <div>&nbsp;</div>
        </div>
    </div>
    {{/each}}
    </form>
</div>
</script>

Portal.ContactInformationView = Ember.View.create({
    'templateName': 'contact-information',

    'click': function(evt) {
        // Step #1: Stop the event from bubbling...
        evt.preventDefault();
        evt.stopPropagation();

        // Step #2: If this is for collapsing / expanding contacts...
        if(evt.target.id.indexOf('italic_toggle') >= 0) {
            var sourceElem = $(evt.target);
            sourceElem.toggleClass('fa-chevron-circle-down');
            sourceElem.toggleClass('fa-chevron-circle-up');

            var targetElem = $('#' + evt.target.id.replace('italic', 'div'));
            targetElem.slideToggle(600);
        }
    }
});

地址信息把手模板/视图定义：

<script type="text/x-handlebars" data-template-name="address-information">
<div class="box box-primary">
    <div class="box-header">
        <div class="pull-left"><h3 class="box-title">Location Information</h3></div>
        <div class="pull-right box-tools"><button type="button" class="btn btn-default btm-sm" {{action "addAddress"}}>+</button></div>
    </div>
    <form role="form">
    {{#each addresses}}
    <div class="box-body bg-gray" style="margin-bottom:5px;">
        <div class="form-group">
            <div class="pull-left">
                {{view Ember.Select class="form-control" content=addressTypes value=type}}
            </div>
            <div class="pull-right box-tools">
                <a><i id="italic_toggle_address_{{unbound id}}" class="fa fa-chevron-circle-down fa-2x text-blue"></i></a>
                <a><i class="fa fa-trash-o fa-2x text-orange" {{action "deleteAddress" id}}></i></a>
            </div>
            <div>&nbsp;</div>
        </div>
        <div id="div_toggle_address_{{unbound id}}" style="display:none;">
        <div class="form-group" style="margin-top:3px;">
            {{view Ember.Select class="form-control" content=countries value=country}}
            {{view Ember.Select class="form-control" content=states value=state}}
            {{view Ember.Select class="form-control" content=cities value=city}}
            {{input type="text" class="form-control" placeholder="PIN Code" value=pincode}}
        </div>
        <div class="form-group">
            {{input type="text" class="form-control" placeholder="Line #1" value=line1}}
            {{input type="text" class="form-control" placeholder="Line #2" value=line2}}
            {{input type="text" class="form-control" placeholder="Line #3" value=line3}}
            {{input type="text" class="form-control" placeholder="Area" value=area}}
        </div>
        </div>
    </div>
    {{/each}}
    </form>
</div>
</script>

Portal.AddressInformationView = Ember.View.create({
    'templateName': 'address-information',

    'click': function(evt) {
        // Step #1: Stop the event from bubbling...
        evt.preventDefault();
        evt.stopPropagation();

        // Step #2: If this is for collapsing / expanding addresses...
        if(evt.target.id.indexOf('italic_toggle') >= 0) {
            var sourceElem = $(evt.target);
            sourceElem.toggleClass('fa-chevron-circle-down');
            sourceElem.toggleClass('fa-chevron-circle-up');

            var targetElem = $('#' + evt.target.id.replace('italic', 'div'));
            targetElem.slideToggle(600);
        }
    }
});

紧急联系信息车把模板/视图定义：

<script type="text/x-handlebars" data-template-name="emergency-contact-information">
<div class="box box-primary">
    <div class="box-header">
        <div class="pull-left"><h3 class="box-title">Emergency Contacts</h3></div>
        <div class="pull-right box-tools"><button type="button" class="btn btn-default btm-sm" {{action "addEmergencyContact"}}>+</button></div>
    </div>
    <form role="form">
    {{#each emergencyContacts}}
    <div class="box-body bg-gray" style="margin-bottom:5px;">
        <div class="form-group">
            <div class="pull-left">
                {{input type="text" class="form-control" placeholder="Contact Name" value=name}}
            </div>
            <div class="pull-right box-tools">
                <a><i id="italic_toggle_emergency_contact_{{unbound id}}" class="fa fa-chevron-circle-down fa-2x text-blue"></i></a>
                <a><i class="fa fa-trash-o fa-2x text-orange" {{action "deleteEmergencyContact" id}}></i></a>
            </div>
            <div>&nbsp;</div>
        </div>
        <div id="div_toggle_emergency_contact_{{unbound id}}" class="form-group" style="display:none;">
            <div class="pull-left" style="margin-top:3px;">
                {{view Ember.Select class="form-control" content=countryCodes value=code}}
            </div>
            <div class="pull-left" style="margin-top:3px;">
                {{input type="text" class="form-control" value=number}}
            </div>
            <div>&nbsp;</div>
        </div>
    </div>
    {{/each}}
    </form>
</div>
</script>

Portal.EmergencyContactInformationView = Ember.View.create({
    'templateName': 'emergency-contact-information',

    'click': function(evt) {
        // Step #1: Stop the event from bubbling...
        evt.preventDefault();
        evt.stopPropagation();

        // Step #2: If this is for collapsing / expanding contacts...
        if(evt.target.id.indexOf('italic_toggle') >= 0) {
            var sourceElem = $(evt.target);
            sourceElem.toggleClass('fa-chevron-circle-down');
            sourceElem.toggleClass('fa-chevron-circle-up');

            var targetElem = $('#' + evt.target.id.replace('italic', 'div'));
            targetElem.slideToggle(600);
        }
    }
});

路线，控制器和模型定义如下：

Portal.ProfilesRoute = Ember.Route.extend({
    'setupController': function(controller, model) {
        controller.set('model', model);
    },

    'model': function(params) {
        return this.store.find('profile', params.userId);
    },

    'actions': {
        'didTransition': function() {
            setTimeout(function() {
                $("#input-dob").inputmask("dd/mm/yyyy", {"placeholder": "dd/mm/yyyy"});
            }, 250);
        }
    }
});

Portal.ProfilesController = Ember.ObjectController.extend({
    'actions': {
        'addContact': function() {
            var user = this.get('model'),
                newid = Portal.generateUUID();

            user.get('contacts').addObject(this.store.createRecord('contact', { 
                'id': newid,
                'dbid': newid
            }));
        },

        'deleteContact': function(id) {
            var user = this.get('model');

            this.store.find('contact', id)
            .then(function(contact) {
                user.get('contacts').removeObject(contact);
                contact.deleteRecord();
            });
        },

        'addAddress': function() {
            var user = this.get('model'),
                newid = Portal.generateUUID();

            user.get('addresses').addObject(this.store.createRecord('address', { 
                'id': newid,
                'dbid': newid
            }));
        },

        'deleteAddress': function(id) {
            var user = this.get('model');

            this.store.find('address', id)
            .then(function(address) {
                user.get('addresses').removeObject(address);
                address.deleteRecord();
            });
        },

        'addEmergencyContact': function() {
            var user = this.get('model'),
                newid = Portal.generateUUID();

            user.get('emergencyContacts').addObject(this.store.createRecord('emergencyContact', { 
                'id': newid,
                'dbid': newid
            }));
        },

        'deleteEmergencyContact': function(id) {
            var user = this.get('model');

            this.store.find('emergencyContact', id)
            .then(function(emergencyContact) {
                user.get('emergencyContacts').removeObject(emergencyContact);
                emergencyContact.deleteRecord();
            });
        },

        'save': function() {
            this.model.save();
        },

        'cancel': function() {
            this.model.get('contacts').content.invoke('rollback');
            this.model.get('addresses').content.invoke('rollback');
            this.model.rollback();
        }
    }
});

Portal.Profile = DS.Model.extend({
    'firstName': DS.attr('string'),
    'middleNames': DS.attr('string'),
    'lastName': DS.attr('string'),
    'suffix': DS.attr('string'),
    'dob': DS.attr('date'),
    'gender': DS.attr('string'),

    'contacts': DS.hasMany('contact'),
    'addresses': DS.hasMany('address'),
    'emergencyContacts': DS.hasMany('emergencyContact'),

    'formattedDoB': function(key, value, prevValue) {
        if(arguments.length <= 1) {
            return moment(this.get('dob')).format('DD/MM/YYYY');
        }

        // Set the new DOB
        var newDoB = moment(value, 'DD/MM/YYYY');
        if(newDoB.isValid()) {
            this.set('dob', newDoB.toDate());
        }
    }.property('dob'),

    'genders': ['Male', 'Female']
});

Portal.Contact = DS.Model.extend({
    'dbid': DS.attr('string'),
    'type': DS.attr('string'),
    'code': DS.attr('string'),
    'number': DS.attr('string'),

    'contactTypes': ['Home Landline', 'Office Landline', 'Other Landline', 'Personal Mobile', 'Office Mobile', 'Other Mobile', 'Other'],
    'countryCodes': ['1', '91']
});

Portal.Address = DS.Model.extend({
    'dbid': DS.attr('string'),
    'type': DS.attr('string'),
    'line1': DS.attr('string'),
    'line2': DS.attr('string'),
    'line3': DS.attr('string'),
    'area': DS.attr('string'),
    'city': DS.attr('string'),
    'state': DS.attr('string'),
    'country': DS.attr('string'),
    'pincode': DS.attr('string'),

    'addressTypes': ['Home', 'Office', 'Other'],

    'countries': ['India', 'USA'],

    'states': function() {
        var countryStates = {
            'India': ['Andhra Pradesh', 'Telangana'],
            'USA': ['Alabama', 'Kentucky']
        };

        return countryStates[this.get('country')];
    }.property('country'),

    'cities': function() {
        var stateCities = {
            'Andhra Pradesh': ['Vijayawada', 'Guntur', 'Tirupati'],
            'Telangana': ['Hyderabad', 'Secunderabad']
        };

        return stateCities[this.get('state')];
    }.property('state')
});

Portal.EmergencyContact = DS.Model.extend({
    'dbid': DS.attr('string'),
    'code': DS.attr('string'),
    'number': DS.attr('string'),

    'countryCodes': ['1', '91']
});

当我第一次进入这条路线时，它的效果非常好。当我转换到主页/其他路线并尝试转换回此路线时，Ember抛出一个断言失败错误：

未捕获错误：断言失败：在被破坏的对象上调用set＆＃34; （ember.js：3722）

我做错了什么？

Answer 1

以下是我从您的代码中发现的两件事。

第一件事：

你将你的余烬路线混合在一起。 你应该清楚路由中的单数/复数名称约定。

Portal.ProfilesRoute引用一组配置文件。 Portal.ProfileRoute引用1个个人资料。

因为您在Portal.ProfilesRoute中定义了两者。第一次单击Ember将自动路由假设您返回相同的模型，因此甚至不会呼叫您的路线。但是当你尝试向后导航时，模型钩实际上调用了你的路由，并最终得到错误。

第二件事  与事物1有关的那种：

'setupController': function(controller, model) {
        controller.set('model', model);
    },

    'model': function(params) {
        return this.store.find('profile', params.userId);
    }

任何一个但不是两个。例如，如果要对模型执行某些操作，请使用setupController。

'setupController': function(controller, model) {
            //do something to the model if you want to 
            // maybe change some attribute 
             model.set('name','blah blah');
            controller.set('model', model);
        },

否则只做

'model': function(params) {
        return this.store.find('profile', params.userId);
    },

但是，如第1项所述，这应该是ProfileRoute

的单一路线

希望它有所帮助！