我有一个名为 res 的对象数组，并尝试根据一种 href、一种方法以及在某些情况下使用多个架构来循环和组织对象，如下所示:
href: '/questions/{id}'
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“$schema”，我想检查数组中的下一个对象是否也具有“$schema”。如果是这样，那么我想标记当前模式对象 requestSchema，下一个对象将被称为 responseSchema。但如果下一个对象不包含“$schema”，则当前对象将被标记为responseSchema。
我想获取资源并将其变成
[{
"resource": "/questions",
"verb": "GET",
"schemaResponse": {
"$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
}
}
]
除了需要请求模式和响应模式之外，一切正常。
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)
最佳答案
基于此:
My issue is when I have multiple schema, if the current object I am in has '$schema' I want to check if the next object in the array also has '$schema'. If it does then I want to label the current schema object, requestSchema and the next object will be called responseSchema. But if the next object does not contain '$schema' then the current object will be labeled responseSchema.
还有这个(来 self 对你的问题的评论):
Your question was a little unclear (I'd suggest proofreading it again and breaking up some of the run-on sentences). Are you saying that when you evaluate if ((lodash.has(res[key], '$schema')) && (lodash.has(res[key-1], '$schema'))) the value res[key-1] is always undefined?. So basically the 2nd if block never executes
以下是一些可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){ .... }
}
我会在一个简单的循环上对此进行测试，并记录 crnt 和 next 的值，看看您是否确实获得了预期的结果。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。
我不知道你的代码到底有什么问题，但这至少会更具可读性，并且可能会阐明你的错误。
关于javascript - 循环遍历对象数组，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38298857/