[英]Populating HTML Select dropdown from a database in Meteor
我还没有找到正确的答案,所以看看stackOverflow的工作人员是否可以提供帮助。 我知道这似乎很普通,但是此示例与我在搜索时发现的示例有所不同。
我有一个流星模板,其中有一个选择下拉列表,其中包括相关部分:
{{#each phoneNumber}}
<li>
<input id="{{this._id}}" type="text" name="phoneNumberItem" placeholder="Phone number here" value="{{number}}">
<select id="{{this._id}}" name="type">
<!-- go through collection and see which is selected there, mark it as selected here so they match -->
<option selected="{{selectedOrNot}}" name="selection">Work</option>
<option selected="{{selectedOrNot}}" name="selection">Home</option>
<option selected="{{selectedOrNot}}" name="selection">Mobile</option>
<option selected="{{selectedOrNot}}" name="selection">Office</option>
<option selected="{{selectedOrNot}}" name="selection">Fax</option>
<option selected="{{selectedOrNot}}" name="selection">Other</option>
</select>
<input id="{{this._id}}" type="button" class="remove" value="X">
</li>
{{/each}}
selectedOrNot所在的帮助程序的完整代码如下所示:
Template.addPhoneNumber.helpers({
//the full list of phone numbers in the collection, so we can loop through them in the template and draw them into the form
'phoneNumber': function() {
return newOrgPhoneNumbers.find();
},
//let's us choose which of the dropdown items are selected
'selectedOrNot': function(event){
var collectionType = newOrgPhoneNumbers.findOne(); //get the type from the collection (EG: Home, Mobile, Fax, etc)
var typeFormName = $('[name="selection"]').val(); //get the data from the form (EG: Home, Mobile, Fax, etc)
//When drawing the select dropdown, see if there's a match and return selected if so
if(collectionType.type === typeFormName){
console.log ('selected!');
return 'selected';
}
}
});
我正在尝试做的是:
我将数据存储在名为newOrgPhoneNumbers的集合中。
该数据包括其中具有“家庭”,“移动”,“工作”等的“类型”。
当我在模板中绘制选择下拉列表时,我希望为与newOrgPhoneNumbers集合中的“类型”匹配的选项选择选定的内容。 请注意,有多个选择下拉列表,数据收集中的每个项目都有一个。 因此,可以说,表格中有6个电话号码,每个电话号码都有自己的ID,该ID均来自其提取的集合。
出于本示例的目的,收集数据将“ Home”作为“类型”,因此我希望在选择下拉列表中选择Home的情况下进行绘制。
现在,我可以看到这里出了什么问题。 typeFormName使用选择器下拉列表的VALUE,默认情况下始终为“工作”。
我该如何重做以在If条件中进行匹配,并在获得匹配项时返回“ selected”? 我认为我需要从模板中检索与集合中的值匹配的值,但选择器下拉列表没有这样的值(因为绘制时它始终是“工作的”)。
今天,我已经花了大约5个小时来进行各种逻辑尝试,所以该问一下了。 任何帮助是极大的赞赏。 抢
代替这个
//let's us choose which of the dropdown items are selected
'selectedOrNot': function(event){
var collectionType = newOrgPhoneNumbers.findOne(); //get the type from the collection (EG: Home, Mobile, Fax, etc)
var typeFormName = $('[name="selection"]').val(); //get the data from the form (EG: Home, Mobile, Fax, etc)
//When drawing the select dropdown, see if there's a match and return selected if so
if(collectionType.type === typeFormName){
console.log ('selected!');
return 'selected';
}
}
尝试这个
//let's us choose which of the dropdown items are selected
'selectedOrNot': function(event){
var typeFormName = $('[name="selection"]').val(); //get the data from the form (EG: Home, Mobile, Fax, etc)
//When drawing the select dropdown, see if there's a match and return selected if so
if(this.type === typeFormName){
console.log ('selected!');
return 'selected';
}
}
确保通过console.log
获得正确的值
编辑
尝试以下代码
{{#each phoneNumber}}
<li>
<input id="{{this._id}}" type="text" name="phoneNumberItem" placeholder="Phone number here" value="{{number}}">
<select id="{{this._id}}" name="type">
<!-- go through collection and see which is selected there, mark it as selected here so they match -->
<option value="Work">Work</option>
<option value="Home">Home</option>
<option value="Mobile">Mobile</option>
<option value="Office">Office</option>
<option value="Fax">Fax</option>
<option value="Other">Other</option>
</select>
{{setDropdownValue}}
<input id="{{this._id}}" type="button" class="remove" value="X">
</li>
{{/each}}
在帮手中
setDropdownValue: function(){
$("#"+this._id).val(this.type);
}
非常感谢@Sasikanth。 这就是他为我提供的帮助,下面提供了全文,以帮助他人/将来参考。
流星模板:
{{#each phoneNumber}}
<li>
<input id="{{this._id}}" type="text" name="phoneNumberItem" placeholder="Phone number here" value="{{number}}">
<select id="sel_{{this._id}}" name="type">
<!-- go through collection and see which is selected there, mark it as selected here so they match -->
<option value="Work">Work</option>
<option value="Home">Home</option>
<option value="Mobile">Mobile</option>
<option value="Office">Office</option>
<option value="Fax">Fax</option>
<option value="Other">Other</option>
</select>
{{setDropdownValue}}
<input id="{{this._id}}" type="button" class="remove" value="X">
</li>
{{/each}}
流星助手:
Template.addPhoneNumber.helpers({
//the full list of phone numbers in the collection, so we can loop through them in the template and draw them into the form
'phoneNumber': function() {
return newOrgPhoneNumbers.find();
},
//This will take the value of the database item's "type" field and send it back to the select html element.
//It's using the sel_ prefix to separate it from the other items with the same id in the template so they don't receive the data by accident.
'setDropdownValue': function(){
$("#sel_"+this._id).val(this.type);
}
});
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