英文:
How to populate a nested golang struct, which contains an array of structs
问题
所以我一直在尝试填充这个我创建的庞大结构体，但一直没有成功。
type Initial_Load struct {
Chapters []struct {
Name string `Chapter Name`
PageNum int `Number of Page"`
Pages []struct {
Description string `Page Description`
PageNumber int `Page Number`
Source string `Page Source`
}
}
NumChapters int `Total number of chapters`
}
这是这个结构体所模拟的JSON数据：
{
"Num_Chapters": 2,
"Chapters": [
{
"Name": "Pilot",
"Page_Num": 2,
"Pages": [
{
"Page_Number": 1,
"Source": "local.com",
"Description": "First Page"
},
{
"Page_Number": 2,
"Source": "local.com",
"Description": "Second Page"
}
]
},
{
"Name": "Chapter2",
"Page_Num": 2,
"Pages": [
{
"Page_Number": 1,
"Source": "local.com",
"Description": "First Page"
},
{
"Page_Number": 2,
"Source": "local.com",
"Description": "Second Page"
}
]
},
{
"Name": "Chapter3",
"Page_Num": 2,
"Pages": [
{
"Page_Number": 1,
"Source": "local.com",
"Description": "First Page"
},
{
"Page_Number": 2,
"Source": "local.com",
"Description": "Second Page"
}
]
}
]
}
关于填充嵌套结构体的问题有很多解答，但我还没有找到一个包含结构体数组的解答。我知道这可能非常简单，但我就是想不出来。谢谢。
英文:
So I've been trying to populate this monster of a struct I created, but with no success.
type Initial_Load struct {
Chapters []struct {
Name string `Chapter Name`
PageNum int `Number of Page"`
Pages []struct {
Description string `Page Description`
PageNumber int `Page Number`
Source string `Page Source`
}
}
NumChapters int `Total number of chapters`
}
Here's the JSON that this struct is modeling
{
   "Num_Chapters": 2,
   "Chapters": [
      {
         "Name": "Pilot",
         "Page_Num": 2,
         "Pages": [
            {
               "Page_Number": 1,
               "Source": "local.com",
               "Description": "First Page"
            },
            {
               "Page_Number": 2,
               "Source": "local.com",
               "Description": "Second Page"
            }
         ]
      },
      {
         "Name": "Chapter2",
         "Page_Num": 2,
         "Pages": [
            {
               "Page_Number": 1,
               "Source": "local.com",
               "Description": "First Page"
            },
            {
               "Page_Number": 2,
               "Source": "local.com",
               "Description": "Second Page"
            }
         ]
      },
      {
         "Name": "Chapter3",
         "Page_Num": 2,
         "Pages": [
            {
               "Page_Number": 1,
               "Source": "local.com",
               "Description": "First Page"
            },
            {
               "Page_Number": 2,
               "Source": "local.com",
               "Description": "Second Page"
            }
         ]
      }
   ]
}
There's of answered questions about populating nested structs, but I haven't found one which contains an array of structs. I know this is probably very simple, but I just can't figure it out. Thanks.
答案1
得分: 4
你可能需要将这些内部结构定义为类型。可以这样做：
type Page struct {
Description string
PageNumber int
Source string
}
type Chapter struct {
Name string
PageNum int
Pages []Page
}
type Initial_Load struct {
Chapters []Chapter
NumChapters int
}
var x Initial_Load = Initial_Load{
Chapters: []Chapter{
{
Name: "abc",
PageNum: 3,
Pages: []Page{
{
Description: "def",
PageNumber: 3,
Source: "xyz",
},
{
Description: "qrs",
PageNumber: 5,
Source: "xxx",
},
},
},
},
NumChapters: 1,
}
我只放了一个章节，但你可以理解这个思路。
英文:
You may need to define those inner structs as types. This works:
type Page struct {
Description string
PageNumber int
Source string
}
type Chapter struct {
Name string
PageNum int
Pages []Page
}
type Initial_Load struct {
Chapters []Chapter
NumChapters int
}
var x Initial_Load = Initial_Load{
Chapters: []Chapter{
{
Name: "abc",
PageNum: 3,
Pages: []Page{
{
Description: "def",
PageNumber: 3,
Source: "xyz",
},
{
Description: "qrs",
PageNumber: 5,
Source: "xxx",
},
},
},
},
NumChapters: 1,
}
I only put in 1 chapter, but you get the idea.
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