I have a JSON array with ActiveRecord objects. These objects can be reconstructed using the from_json method, which every AR object has. However with from_json it's only possible to reconstruct one single object.
我有一个带有ActiveRecord对象的JSON数组。可以使用每个AR对象具有的from_json方法重建这些对象。但是使用from_json,它只能重建一个单个对象。
To process an array, I could of course just extract substrings from the JSON array and create every object from it's own substring in a loop or so. However I'm wondering if there is a better way to do this, without string manipulation involved.
为了处理数组,我当然可以从JSON数组中提取子字符串,并在循环中从它自己的子字符串中创建每个对象。但是我想知道是否有更好的方法来执行此操作,而不涉及字符串操作。
1 个解决方案
#1
6
I would do
我会做
sudo gem install json
After that just
在那之后
require "json"
and do
JSON.load(array_of_ar_json_representation)
or
JSON.parse(array_of_ar_json_representation)
what fits better for you.
什么更适合你。
Both of these methods return Ruby data structure that corresponds to the json structure. So, if you have a json array of obejcts, after JSON.load or JSON.parse you'll get Ruby array of hashes. You should't have any problems to manipulate this kind of structure.
这两种方法都返回对应于json结构的Ruby数据结构。所以,如果你有一个json数组的obejcts,在JSON.load或JSON.parse之后你会得到Ruby数组的哈希值。操纵这种结构你不应该有任何问题。
#1
6
I would do
我会做
sudo gem install json
After that just
在那之后
require "json"
and do
JSON.load(array_of_ar_json_representation)
or
JSON.parse(array_of_ar_json_representation)
what fits better for you.
什么更适合你。
Both of these methods return Ruby data structure that corresponds to the json structure. So, if you have a json array of obejcts, after JSON.load or JSON.parse you'll get Ruby array of hashes. You should't have any problems to manipulate this kind of structure.
这两种方法都返回对应于json结构的Ruby数据结构。所以,如果你有一个json数组的obejcts,在JSON.load或JSON.parse之后你会得到Ruby数组的哈希值。操纵这种结构你不应该有任何问题。