blocks|key|464365|text|require+'json'

class+Resident
++++attr_accessor+:phone,+:addr

++++def+initialize(phone,+addr)
++++++++@phone+=+phone
++++++++@addr+=+addr
++++end
end

s+=+'{"Resident":[{"phone":"12345","addr":"xxxxx"},{"phone":"12345","addr":"xxxxx"},{"phone":"12345","addr":"xxxxx"}]}'

j+=+JSON.parse(s)

objects+=+j['Resident'].inject([])+{+%7Co,d%7C+o+<<+Resident.new(+d['phone'],+d['addr']+)+}

p+objects[0].phone
"12345"|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|464366|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>require 'json'

class Resident
 attr_accessor :phone, :addr

 def initialize(phone, addr)
 @phone = phone
 @addr = addr
 end
end

s = '{"Resident":[{"phone":"12345","addr":"xxxxx"},{"phone":"12345","addr":"xxxxx"},{"phone":"12345","addr":"xxxxx"}]}'

j = JSON.parse(s)

objects = j['Resident'].inject([]) { |o,d| o &lt;&lt; Resident.new( d['phone'], d['addr'] ) }

p objects[0].phone
"12345"
</code></pre>

blocks|key|464396|text|下面的代码更加简单：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|464397|require+'json'

data+=+JSON.parse(json_data)
residents+=+data['Resident'].map+{+%7Crd%7C+Resident.new(rd['phone'],+rd['addr'])+}|code-block|syntax|javascript|464398|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The following code is more simple:

<pre><code>require 'json'

data = JSON.parse(json_data)
residents = data['Resident'].map { |rd| Resident.new(rd['phone'], rd['addr']) }
</code></pre>

blocks|key|247818|text|今天我在找一个能把json转换成对象的东西，它的效果很不错：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|247819|person+=+JSON.parse(json_string,+object_class:+OpenStruct)|code-block|syntax|javascript|247820|这样，如果响应是数组，则可以执行person.education.school或person[0].education.school|offset|length|style|CODE|247821|我把它留在这里是因为它可能对某些人有用|247822|entityMap^0|0|0|G|N|14|Q|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@$I|T|J|U|K|L]|$I|V|J|W|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|P|$]]

Today i was looking for something that converts json to an object, and this works like a charm:

<pre><code>person = JSON.parse(json_string, object_class: OpenStruct)
</code></pre>

This way you could do <code>person.education.school</code> or <code>person[0].education.school</code> if the response is an array

I'm leaving it here because might be useful for someone

blocks|key|247836|text|我们最近发布了一个Ruby库static_struct来解决这个问题。Check+it+out。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|247837|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/mezuka/static_struct^0|E|D|Z|C|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@$9|Q|A|R|1|S]]|E|$]]|$1|F|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

We recently released a Ruby library <code>static_struct</code> that solves the issue. <a href="https://github.com/mezuka/static_struct" rel="nofollow">Check it out</a>.

blocks|key|464485|text|如果你使用的是ActiveModel::Serializers::JSON，你只需要调用from_json(json)，你的对象就会被映射成这些值。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|464486|class+Person
++include+ActiveModel::Serializers::JSON

++attr_accessor+:name,+:age,+:awesome

++def+attributes=(hash)
++++hash.each+do+%7Ckey,+value%7C
++++++send("#{key}=",+value)
++++end
++end

++def+attributes
++++instance_values
++end
end

json+=+{name:+'bob',+age:+22,+awesome:+true}.to_json
person+=+Person.new
person.from_json(json)+#+=>+#<Person:0x007fec5e7a0088+@age=22,+@awesome=true,+@name="bob">
person.name+#+=>+"bob"
person.age+#+=>+22
person.awesome+#+=>+true|code-block|syntax|javascript|464487|entityMap^0|7|U|18|F|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

If you're using <code>ActiveModel::Serializers::JSON</code> you can just call <code>from_json(json)</code> and your object will be mapped with those values.

<pre><code>class Person
 include ActiveModel::Serializers::JSON

 attr_accessor :name, :age, :awesome

 def attributes=(hash)
 hash.each do |key, value|
 send("#{key}=", value)
 end
 end

 def attributes
 instance_values
 end
end

json = {name: 'bob', age: 22, awesome: true}.to_json
person = Person.new
person.from_json(json) # =&gt; #&lt;Person:0x007fec5e7a0088 @age=22, @awesome=true, @name="bob"&gt;
person.name # =&gt; "bob"
person.age # =&gt; 22
person.awesome # =&gt; true
</code></pre>

I looked into different resources and still get confused on how to parse a json format to a custom object, for example

<pre><code>class Resident
 attr_accessor :phone, :addr

 def initialize(phone, addr)
 @phone = phone
 @addr = addr
 end
end 
</code></pre>

and JSON file

<pre><code>{
 "Resident": [
 {
 "phone": "12345",
 "addr": "xxxxx"
 }, {
 "phone": "12345",
 "addr": "xxxxx"
 }, {
 "phone": "12345",
 "addr": "xxxxx"
 }
 ]
}
</code></pre>

what's the correct way to parse the json file into a array of 3 Resident object?

parse json to object ruby

例如，我研究了不同的资源，仍然对如何将json格式解析为自定义对象感到困惑。class Resident  attr_accessor :phone, :addr  def initialize(phone, addr)      @phone = phone      @addr = addr  endend    ...

问将json解析为对象ruby
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