我有一个observableArray
,我想循环实现一个字段表,用户应该能够动态添加行。这是我想要完成的图像:
在上面注意,每当我填写表单时,它会更新/变异到其他字段,尽管我的字段名称是唯一的。
<div class="spacer-xxs">
<records data-bind="foreach: $data.multi_records">
<record>
<h5 data-bind="text: $data.title"></h5>
<table class="table table-condensed" data-bind="if: $data.fields().length > 0">
<thead>
<tr data-bind="foreach: $data.fields_schema">
<th data-bind="text: $data.title"></th>
</tr>
</thead>
<tbody data-bind="foreach: $data.fields">
<tr data-bind="foreach: $parent.fields_schema">
<td>
<input class="form-control input-sm"
data-bind="attr: {'name': $data.name, 'id': $index()}, value: $data.value">
</td>
<!-- ko if: $index() == $parent.length-1 -->
<td>
<a href="#" class="error" data-bind="click: $root.removeRow.bind($data, $parent)"><i
class="fa fa-times-circle"></i> </a>
</td>
<!-- /ko -->
</tr>
</tbody>
</table>
<div class="row">
<div class="col-xs-12">
<button class="btn btn-xs btn-inverse" data-bind="click: $root.addTableRow.bind($data, $parent)">
<i class="fa fa-plus"></i> Add item
</button>
</div>
</div>
</record>
</records>
以下是为observableArray
:
var field = function (field) {
this.name = ko.observable(field.name).extend({required: field.required === true});
this.title = ko.observable(field.title);
this.type = ko.observable(field.type);
this.help_text = ko.observable(field.help_text);
this.value = ko.observable(field.value).extend({required: field.required === true});
//Add validation group
self.errors.push(ko.validation.group(this));
};
section.fields = [{...}, ] //Contains fields array from the database.
this.fields = ko.observableArray(ko.utils.arrayMap(section.fields, function (field_item) {
return new field(field_item);
}));
其他信息。
这是一个架构数据,我想从中创建我的多记录表单。因此,给定页面将具有多个具有单个字段和多记录字段的表单部分,例如下面的产品列表。对于多记录模式,我应该能够添加更多行。
[{"title":"Untitled section","fields":[],"multi_records":[]},{"title":"Section 1","fields":[{"title":"Field 1","type":"text","required":true,"value":"1000","help_text":"Default is 1000","name":"field_1"},{"title":"Field 2","type":"text","required":true,"name":"field_2"}],"multi_records":[{"title":"Products","fields":[{"title":"Name","type":"text","name":"name"},{"title":"Qty","type":"number","name":"qty"},{"title":"Price","type":"number","name":"price"},{"title":"Total","type":"formula","value":"MULT(price,qty)","name":"total"}]}]}]
答案 0 :(得分:0)
以下是感兴趣的部分:
<tbody data-bind="foreach: $data.fields">
<tr data-bind="foreach: $parent.fields_schema">
<td>
<input class="form-control input-sm"
data-bind="attr: {'name': $data.name, 'id': $index()}, value: $data.value">
</td>
$data.fields
是外部循环,因此每个条目都有一行。 $parent.fields_schema
为每行中的列提供$data
。您将列的每个元素绑定到同一个事物fields_schema[$index].value
。
外部循环需要provide an alias,以便您可以引用行的数据而不仅仅是架构列规范。这看起来像是:
<tbody data-bind="foreach: {data: fields, as:row}">
<tr data-bind="foreach: $parent.fields_schema">
<td>
<input class="form-control input-sm"
data-bind="attr: {'name': name}, value: row[name()]">
</td>
(我删除了对$data
的引用,因为它们是不必要的。)row
引用当前行的field
对象,并通过{{进行索引(我认为) 1}}来自架构。