在Flask中将数组作为表单名称处理 [英] Handling array as form name in flask

问题描述

如果我发送这样的表格:

If I send a form like this:

<form method="POST" ...>
    <input type="text" name="filters[price_from]">
    <input type="text" name="filters[price_to]">
</form>

对于PHP脚本，它会自动创建一个数组，我可以访问如下变量:

to PHP script it automatically creates an array and I can access variables like this:

$_POST['filters']['price_to']

和:

 $_POST['filters']

可迭代

这是我的问题，如何在FLASK中获得相同的效果?

AND this is my question, how can I get same effect in FLASK?

request.form.getlist('filters')

返回[](空列表)

request.form.get('filters[price_from]')

返回正确的值，但这不是他们期望的结果(不可迭代).

return right value but this is not the result of which they expect (its not iterable).

我应该重建表格还是使用其他方法?

Should i rebuild my form or use some other method?

推荐答案

您无法使用键访问python数组/列表，如果要使用键访问数据，请存储您的过滤器作为 json 对象，那么您将可以使用键来访问数据.

You cannot access a python array/list using a key, if you want to access your data using a key, store your filters as a json object, then you will be able to access the data by using a key.

<form method="POST" enctype="application/JSON">
    <input type="text" name="filters[price_from]" value="" >
    <input type="text" name="filters[price_to]" value="" >
</form>

filters = request.get_json()

filters['price_from'] #returns price_from value
filters['price_to'] #returns price_to value

在php中，数组是几件事情.

In php an array is several things.

PHP中的数组实际上是有序映射.映射是一种将值与键相关联的类型.该类型已针对多种不同用途进行了优化.可以将其视为数组，列表(向量)，哈希表(地图的实现)，字典，集合，堆栈，队列，甚至更多.

An array in PHP is actually an ordered map. A map is a type that associates values to keys. This type is optimized for several different uses; it can be treated as an array, list (vector), hash table (an implementation of a map), dictionary, collection, stack, queue, and probably more.

在python中，数组仅 个列表通过索引访问.

While in python an array is only a list accessed by index.

>>> filters = ['price_from', 'price_to']
>>> filters[0]
'price_from'
>>> filters[1]
'price_to'

然后通过密钥访问 dict .

>>> filters = {'price_from':'value', 'price_to':'another_value'}
>>> filters['price_from']
'value'
>>> filters['price_to']
'another_value'

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