我有一个名为res的对象数组，我试图循环并根据一个href，一个方法，在某些情况下多个模式组织对象，如：
href: '/questions/{id}'
我的问题是当我有多个模式时，如果我所在的当前对象具有'$ schema'，我想检查数组中的下一个对象是否也有'$ schema'。如果是，那么我想标记当前的模式对象requestSchema，下一个对象将被称为responseSchema。但是如果下一个对象不包含'$ schema'，那么当前对象将被标记为responseSchema。
我想拿res并把它变成
[{
"resource": "/questions",
"verb": "GET",
"schemaResponse": {
"$schema": "http://json-schema.org/draft-04/schema#",
"type": "object",
"properties": {
"data": {
"type": "array",
"items": [{
"type": "object",
"properties": {
"question": {
"type": "string",
"enum": [
"Favourite programming language?"
]
},
"published_at": {
"type": "string",
"enum": [
"2014-11-11T08:40:51.620Z"
]
},
"url": {
"type": "string",
"enum": [
"/questions/1"
]
},
"choices": {
"type": "array",
"items": [{
"type": "object",
"properties": {
"choice": {
"type": "string",
"enum": [
"Javascript"
]
},
"url": {
"type": "string",
"enum": [
"/questions/1/choices/1"
]
},
"votes": {
"type": "number",
"enum": [
2048
]
}
},
"required": [
"choice",
"url",
"votes"
],
"additionalProperties": false
}]
}
},
"required": [
"question",
"published_at",
"url",
"choices"
],
"additionalProperties": false
}]
}
},
"required": [
"data"
]
}
}, {
"resource": "/questions/{id}",
"verb": "GET",
"schemaRequest": {
"$schema": "http://json-schema.org/draft-04/schema#",
"type": "object",
"properties": {
"id": {
"type": "number"
}
},
"required": [
"id"
]
},
"schemaResponse": {
"$schema": "http://json-schema.org/draft-04/schema#",
"type": "object",
"properties": {
"question": {
"type": "string",
"enum": [
"Favourite programming language?"
]
},
"published_at": {
"type": "string",
"enum": [
"2014-11-11T08:40:51.620Z"
]
},
"url": {
"type": "string",
"enum": [
"/questions/1"
]
},
"choices": {
"type": "array",
"items": [{
"type": "object",
"properties": {
"choice": {
"type": "string",
"enum": [
"Javascript"
]
},
"url": {
"type": "string",
"enum": [
"/questions/1/choices/1"
]
},
"votes": {
"type": "number",
"enum": [
2048
]
}
},
"required": [
"choice",
"url",
"votes"
],
"additionalProperties": false
}]
}
},
"required": [
"question",
"published_at",
"url",
"choices"
],
"additionalProperties": false
}
}
]
除了需要具有请求模式和响应模式之外，一切都有效。
const lodash = require('lodash');
var res = [
{ href: '/questions' },
{ method: 'GET' },
{ '$schema': 'http://json-schema.org/draft-04/schema#',
type: 'object',
properties: { data: [Object] },
required: [ 'data' ] },
{ href: '/questions/{id}',
hrefVariables: { element: 'hrefVariables', content: [Object] } },
{ method: 'GET',
headers: { element: 'httpHeaders', content: [Object] } },
{ '$schema': 'http://json-schema.org/draft-04/schema#',
type: 'object',
properties: { id: [Object] },
required: [ 'id' ] },
{ '$schema': 'http://json-schema.org/draft-04/schema#',
type: 'object',
properties:
{ question: [Object],
published_at: [Object],
url: [Object],
choices: [Object] },
required: [ 'question', 'published_at', 'url', 'choices' ] } ]
var arr = [];
var arrFinal = [];
var result = {};
for (var key = 0; key < res.length; key++) {
console.log(res[key]);
console.log(key);
var found = false;
for(var i = 0; i < arr.length; i++) {
//console.log((lodash.has(res[key], 'href')));
//console.log((lodash.has(res[key-1], '$schema')));
if ((lodash.has(arr[i], 'href'))) {
found = true;
break;
}
}
if ((lodash.has(res[key], '$schema')) && (lodash.has(res[key-1], '$schema'))) {
console.log('here');
result.schemaResponse = res[key];
result = lodash.omit(result, ['headers', 'properties', 'hrefVariables', 'required', 'href', 'method']);
break;
}
if((found === true) && (lodash.has(res[key], '$schema'))) {
var result = {};
console.log('there')
var combinedKeys = arr.reduce(function(a, item) {
Object.keys(item).map(function(key) {
if(key === 'href'){
result.resource = item[key];
}
if(key === 'method'){
result.verb = item[key];
} else {
result[key] = item[key];
}
});
return result;
}, {});
arr = [];
if((lodash.has(res[key+1], '$schema'))){
result.schemaRequest = res[key];
} else {
result.schemaResponse = res[key];
result = lodash.omit(result, ['headers', 'properties', 'hrefVariables', 'required', 'href', 'method']);
arrFinal.push(result);
result = {};
}
}
else {
console.log('hmmm');
var object = res[key];
arr.push(object);
}
}
var string = JSON.stringify(arrFinal, null, ' ')
console.log(arrFinal)
答案 0 :(得分：1)
基于此：
我的问题是当我有多个架构时，如果我所在的当前对象具有＆＃39; $ schema＆＃39;我想检查数组中的下一个对象是否也有＆＃39; $ schema＆＃39;。如果是，那么我想标记当前的模式对象requestSchema，下一个对象将被称为responseSchema。但是如果下一个对象不包含＆＃39; $ schema＆＃39;然后将当前对象标记为responseSchema。
和（从我对你的问题的评论）：
你的问题有点不清楚（我建议再次校对并分解一些连续的句子）。当你评估是否（（lodash.has（res [key]，＆＃39; $ schema＆＃39;））＆amp;＆amp;（lodash.has（res [key-1]，＆＃39; $ schema＆＃39;）））值res [key-1]总是未定义？所以基本上第二个if块永远不会执行
以下是一些适用于您的代码的伪代码：
for ( var nIdx, crnt, next, key = 0, m = res.length; key < m; key++ ){
crnt = res[ key ]
next = res[ key + 1 ]
//do your checking here based on the existence of 'next'
if (next){ .... }
}
我在一个简单的循环中对此进行测试并记录crnt和next的值，看看您是否真正获得了预期的结果。如果它们符合预期，您可以调整代码以使用这些值，而不是尝试使用代码中的res[ key ]动态访问它们。
我不知道，你的代码究竟是什么问题，但这至少会更具可读性，并可能说明你的错误。