如何从流星中的提交事件中获取输入ID？

In one template, I have:

在一个模板中，我有：

    <template name="moviesTemplate">
     <form>
       <ul>
         {{#each movies}}
           <li>
             {{title}} <input id="{{title}}" type="submit" value="Delete" />  
           </li> 
         {{/each}}
      </ul>
    </form>
    </template>

When the user clicks Delete on the moviesTemplate, I want to find the id property of the input element from within the event in my javascript file:

当用户在moviesTemplate上单击Delete时，我想在我的javascript文件中的事件中找到input元素的id属性：

Template.moviesTemplate.events = {
    'submit': function (e, tmpl) {
        e.preventDefault();
        var theId = theButtonThatRaisedTheEvent.id.toString();  // <--- This is what I'm referring to

     }
 }

How can I find this element? I thought it was 'e', but I can't seem to get any Id out of it. Perhaps I misunderstand...

我怎样才能找到这个元素？我以为它是'e'，但我似乎无法从中得到任何ID。也许我误解了......

Edit 1:

编辑1：

Okay, so it seems that 'e' is the event, which doesn't contain any information related to the source element. How else do I go around accomplishing this? Do I need to rethink about how I'm doing this?

好的，所以似乎'e'是事件，它不包含任何与源元素相关的信息。我怎么回事呢？我是否需要重新思考我是如何做到这一点的？

4 个解决方案

#1

To me it sounds like the id belongs to the form, and not to the submit button. I would use the following:

对我来说，它听起来像id属于表单，而不是提交按钮。我会使用以下内容：

<template name="main">
    <form data-id="anId">
        <input type="submit" value="Delete!">
    </form>
</template>

Template.main.events({
    'submit form': function(event, template){
        event.preventDefault() // Don't submit it!
        var id = event.currentTarget.getAttribute('data-id') // Get the id attribute.
        console.log(id)
    }
})

Update

更新

Replace the template you have now with:

替换您现在拥有的模板：

<template name="moviesTemplate">
    <ul>
        {{#each movies}}
            <li>
                <form data-id="{{title}}">
                    {{title}} <input type="submit" value="Delete" />  
                </form>
            </li> 
        {{/each}}
    </ul>
</template>

And use the event handler previously written in this post.

并使用此帖子中先前编写的事件处理程序。

Actually, this inside the event handler will be the context of the movie, so the handler can simply be:

实际上，事件处理程序中的这个将是电影的上下文，因此处理程序可以简单地为：

Template.main.events({
    'submit form': function(event, template){
        event.preventDefault() // Don't submit it!
        var id = this.title // Get the title through the context.
        console.log(id)
    }
})

so there's no need using the data-id attribute on the form.

所以不需要在表单上使用data-id属性。

#2

Unfortunately; it's not that straightforward.

不幸;这不是那么简单。

A starting point would be similar to this answer However you may want to handle things like "enter" key being pressed on element

一个起点类似于这个答案但是你可能想要处理诸如“输入”键被按下元素之类的东西

Template.moviesTemplate.events = {
    'click input[type=submit]': function(e, tmpl){
       tmpl.find('input[type=submit]').data('clicked',false);
       $(e.currentTarget).data('clicked',true);
    },
    'submit': function (e, tmpl) {
        e.preventDefault();
        var theId = tmpl.find('input[type=submit]').filter(function(i,ele){
          return $(ele).data('clicked');
        }).get(0).attr('id');    
     }
}

#3

Use tmpl.find and grab id:

使用tmpl.find并获取id：

Template.moviesTemplate.events = {
     'submit':function(e, tmpl){
         e.preventDefault();
      },
     'click input[type="submit"]':function(e, tmpl){
         console.log(e.currentTarget.id)
     }
 }

Proof

证明

#4

You can create a single submit form event, and you conditionally check the event target field. Call appropriate Meteor method based on the collection you are inserting into.

您可以创建单个提交表单事件，并有条件地检查事件目标字段。根据要插入的集合调用适当的Meteor方法。

Template.detailsViewTemplate.events({
    'submit form': function(ev){
        ev.preventDefault();

        var detail_input_field = template.$('#detail_entry');
        var message_input_field = template.$('#message_entry');

        if(detail_input_field != undefined){
            var detailFormData = {
            detail: $(ev.target).find('[name = detail]').val(),
            parentId: $(ev.target).find('[name = parentId]').val(),
            checkboxStatus: ''
            }

            Meteor.call('addDetail', detailFormData);
            $('.form-group').children().val('');

        } else if(message_input_field != undefined){
            var newMessageData = {
                listId: this.params_id,
                message: $(ev.target).find('[name = message]').val()
            }
            Meteor.call('addMessage', newMessageData);
            $('.form-group').children().val('');
        }
    }
}

#1