[英]KnockoutJS Not Populating $root observable inside the “With” Binding Context
我已經搜索了答案,所以希望我沒有在任何地方重復此內容。
我正在使用ASP .NET MVC5,並將KnockoutJS作為我的ORM。
出於某種原因,當我嘗試使用$ root綁定上下文引用一次ViewModel時(在“ with”綁定上下文內),數據沒有被填充到DOM中。
with綁定上下文是在普通的mvc視圖剃刀頁面中聲明的,但是我在加載到主視圖的部分視圖中使用$ root綁定上下文。
有沒有人遇到這樣的問題,或者可以發現我的錯誤? 我將在下面粘貼我的viewmodel和html代碼。
視圖模型
var ProfileViewModel = function () {
var self = this;
this.Member = ko.observable(); - With Binding to this
this.SocialNetworks = ko.observableArray();
this.Skills = ko.observableArray();
this.SkillsFilter = ko.observable(""); - Trying to access these from root
this.FilteredSkills = ko.observableArray();
this.References = ko.observableArray();
this.Has = function (has_what) {
if (has_what) {
if (has_what.length > 0) {
return true;
} else {
return false;
}
}
return false;
};
$.getJSON("/doitgrad/api/member/CameronPearce91", function (allData) {
self.Member(new DoItGrad.Objects.Member(allData, true));
self.FilteredSkills = ko.computed(function () {
return ko.utils.arrayFilter(self.Skills(), function (item) {
var filter = self.SkillsFilter(),
doesnthaveskill = (jQuery.inArray(item, self.Member().details.skills()) == -1),
containsfiltertext = (item.title().indexOf(filter) > -1);
if (filter != "") {
return (doesnthaveskill && containsfiltertext);
} else {
return doesnthaveskill;
}
});
});
})
$.getJSON("/doitgrad/api/skill/", function (allData) {
var mappedSkills = $.map(allData, function (item) { return new DoItGrad.Objects.Skill(item); });
self.Skills(mappedSkills);
});
}
var model = new ProfileViewModel();
ko.applyBindings(model);
MVC視圖
<section id="profile-details" data-bind="with: Member">
<section id="profile-cover">
<!-- ko if: details.images.cover() == null -->
<img src="/DoitGrad/Content/images/Profile/default_cover.jpg">
<!-- /ko -->
<!-- ko ifnot: details.images.cover() == null --><!-- /ko -->
<section class="change-cover">Change cover photo</section>
<section id="profile-picture">
<!-- ko if: details.images.profile() == null -->
<img src="/DoitGrad/Content/images/Profile/default_avatar.png">
<!-- /ko -->
<!-- ko ifnot: details.images.profile() == null --><!-- /ko -->
<h2 id="profile-name" data-bind="text: title">Cameron Pearce</h2>
<section id="profile-username" data-bind="text: details.username">CameronPearce91</section>
</section>
</section>
<section id="profile-wrapper">
<section id="profile-about" data-bind="text: description">Since I have been at uni, I believe I have achieved a lot. I took a year out of my studies to do a work placement year with Xerox based in Welwyn Garden City, primarily focusing on developing C# Web Applications on the MVC framework. It was the best thing I could have done for my career I believe, I have certainly learnt a lot.</section>
@Html.Partial("partialname")
部分視圖
<section class="profile-detail-holder">
<section class="add" data-form="addSkill">+</section>
<h2 class="profile-detail-header">Skill Wall</h2>
<ul id="profile-skillwall" data-bind="foreach: details.skills()"></ul>
</section>
<section class="dialog-form" data-form="addSkill">
<section class="form-cover grey"></section>
<section class="form-content">
<section class="form-wrap">
<section class="form-close">x</section>
<header class="form-header">Add Skill</header>
<section class="form-body">
<form id="dig-member-addskill" class="area" method="post" action="#">
<input type="text" data-bind="text: $root.SkillsFilter" placeholder="Filter list of skills..." class="ui-textbox"></input>
<ul data-bind="foreach: $root.FilteredSkills"></ul>
<section class="ui-button submit">
<input type="submit" value="Add">
</section>
</form>
</section>
</section>
</section>
</section>
如果有人需要更多信息,請隨時詢問。
我想我已經發現了,而且非常簡單:
<input type="text" data-bind="text: $root.SkillsFilter" placeholder="Filter list of skills..." class="ui-textbox"></input>
您在輸入字段上使用了文本綁定,因此更新輸入不會更改可觀察值。 使用值綁定:
<input type="text" data-bind="value: $root.SkillsFilter" placeholder="Filter list of skills..." class="ui-textbox"></input>
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