使用Twig在JSON对象数组中按ID查找对象 [英] Find object by id in an array of JSON objects with Twig

问题描述

我正在传递一个数组，不幸的是我无法重组:

I am being passed an array that unfortunately I cannot restructure:

"options": [
            {"name":"namea","text":"valuea"},
            {"name":"nameb","text":"valueb"},
            {"name":"namec","text":"valuec"},
            {"name":"named","text":"valued"}
           ]

我需要能够找到名称等于namea，nameb，namec等的对象，然后生成适当的文本.我尝试了以下方法以及其他几种方法，但无法使其正常工作:

I need to be able to find the object with the name equal to namea, nameb, namec, etc. and then produce the appropriate text. I tried the following and few other variations of that but could not get it to work:

{% for item in event.options %} 
    {% if item.name == "nameb" %}
        {{ item.text|capitalize }}
    {% endif %}
{% endfor %}

在此先感谢您的帮助.

我基本上只能访问一个文本框来输入HTML和Twig.我无权访问框架，自定义扩展等.

I basically only have access to a text box to input HTML and Twig. I do not have access to framework, custom extensions, etc.

具有完全格式的JSON:

JSON with exact formatting:

{
"source": "TEST.COM",
"trigger": "test",
"options": [{
            "name":"test_date",
            "value":"31-05-2017"
            },
            {
            "name":"test_number",
            "value":"9081003"
            },
            {
            "name":"test_test",
            "value":"9asd003"
            },
            {
            "name":"Name",
            "value":"Todd"
            },
            {
            "name":"test_other",
            "value":"kslkjsfd"
            },
            {
            "name":"test_help",
            "value":"908sdf3"
            }]
}

推荐答案

这两种方法都非常hacky(我认为评论中提到的javascript方法仍然不太hacky).

This is going to be very hacky either way (I feel the javascript way as mentioned in the comments would still be less hacky).

尽管它是多行的，但我们可以编写类似东西的基本解析器(这绝不是防弹的，如果内容带有"，或者结构发生更改或说实话，则不会失败):

However as its multilined we could write a basic parser like thing (this is by no means bullet proof and fails if the content has a ", or the structure changes or whatever changes to be honest):

{# create an array of lines #}
{% set event = event|split('\n') %}

{# an array to hold our options #}
{% set options = [] %}

{# using a bool to track if we are inside the options part #}
{% set inOptions = false %}

{# this holds the name of the last name value we have passed #}
{% set currentKey = '' %}

{# go through each line #}
{% for line in event %}

    {# if we are inside the options tag do our magic #}
    {% if inOptions %}
        {# check if the line starts with "name": and track the current key name #}
        {# or check if it starts with "value": and set the current key to that value #}
        {% if line matches '/"name":/' %}
            {# split line on the double quotes and get the last bit #}
            {% set currentKey = line|split('"') %}
            {# cant get the array index piped in one go idk.. #}
            {% set currentKey = currentKey[3] %}
        {% elseif line matches '/"value":/i' %}
            {% set currentValue = line|split('"') %}
            {% set options = options|merge({(currentKey): currentValue[3]}) %}
        {% elseif line matches '/\s*}]/' %}
            {% set inOptions = false %}
        {% endif %}
    {% endif %}

    {# check for the options sectioning start #}
    {% if line matches '/^"options/' %}
        {% set inOptions = true %}
    {% endif %}
{% endfor %}

{{ dump(options) }}

这将返回到我的转储中(您没有，所以看不到):

This returns in my dump (which you didn't have so you cant see):

array:6 [▼
  "test_date" => "31-05-2017"
  "test_number" => "9081003"
  "test_test" => "9asd003"
  "Name" => "Todd"
  "test_other" => "kslkjsfd"
  "test_help" => "908sdf3"
]

作为一个实际的数组，您可以在其中调用options.test_date，但所有这些都是超级hacky，它仍然可以改进，但是并没有为此而生，语法很难处理.

As an actual array where you can then call options.test_date but all this is super hacky, it still can be improved but twig is not made for it and the syntax gets so clunky its hard to maintain.

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