python django只能访问第一条语句 [英] python django only the first statement statement can be accessed

问题描述

我只能访问我名字应用中的第一条语句

i can acccess only the first statement in my name app

javascript:

javascript:

<script type="text/javascript">
    function searched(){
    {% for names in name %}
        nameSearched = document.getElementById('name').value;
        document.getElementById('dis').innerHTML = nameSearched;
            if (nameSearched == "{{ names.First }}" ){
                document.getElementById('dis').innerHTML = "{{ names.Last }}";
            } else {
                document.getElementById('dis').innerHTML = "none";
            }
    {% endfor %}
    }
</script>

推荐答案

问题是脚本标记中的函数 searched().

The problem is your function searched() in the script-tag.

例如，如果您具有以下 name -instances:

If you have for example following name-instances:

[
    {
        'First': 'foo',
        'Last': 'bar',
    },
    {
        'First': 'foobar',
        'Last': 'barfoo',
    }
]

因此您在函数中呈现的 if - else 看起来像这样:

So your rendered if-else in the function would look like this:

function searched(){
    nameSearched = document.getElementById('name').value;
    if ("foo" == nameSearched) {
        ...
    } else {
        ...
    }
    if ("bar" == nameSearched) {
        ...
    } else {
        ...
    }
}

如您所见，如果您输入 foo ，则您总是 进入 else .

So as you can see, you are always running into the else if you entered foo.

您可以在 for 循环中执行以下操作:

What you could do is the following in your for-loop:

 <script type="text/javascript">
    function searched(){
      nameSearched = document.getElementById('name').value;
      {% for names in name %}
        {% if forloop.first %}
          if ("{{ names.First }}" == nameSearched) {
            document.getElementById('dis').innerHTML = "{{ names.Last }}";
          }
        {% else %}
          else if ("{{ names.First }}" == nameSearched) {
            document.getElementById('dis').innerHTML = "{{ names.Last }}";
          }
        {% endif %}
      {% endfor %}
      {% if name %}
        else {
          document.getElementById('dis').innerHTML = "none";
        }
      {% endif %}
    }
</script>

这将导致以下结果:

function searched(){
    nameSearched = document.getElementById('name').value;
    if ("foo" == nameSearched) {
        ...
    }
    else if ("foobar" == nameSearched) {
        ...
    }
    else {
        ...
    }
}

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