Node.js 翡翠模板不';无法获取从express传递的数据
我知道问题的标题几乎相同,但问题不同 我正在使用最新的Keystone.js版本中内置的Jade模板引擎v.1.11.0。在控制器中,我使用两个view.on('init')回调查询数据。第一次回调只查询一条记录,并且总是通过。第二种情况有时并不如此 category.jsNode.js 翡翠模板不';无法获取从express传递的数据,node.js,express,mongoose,keystonejs,Node.js,Express,Mongoose,Keystonejs,我知道问题的标题几乎相同,但问题不同 我正在使用最新的Keystone.js版本中内置的Jade模板引擎v.1.11.0。在控制器中,我使用两个view.on('init')回调查询数据。第一次回调只查询一条记录,并且总是通过。第二种情况有时并不如此 category.js var keystone = require('keystone'); var async = require('async'); exports = module.exports = function (req, res)
var keystone = require('keystone');
var async = require('async');
exports = module.exports = function (req, res) {
var view = new keystone.View(req, res);
var locals = res.locals;
// Init locals
locals.section = 'category';
locals.filters = {
category: req.params.category
};
locals.data = {
sections: [],
category: {}
};
// Load current category
view.on('init', function (next) {
var q = keystone.list('Category').model.findOne({
key: locals.filters.category
});
q.exec(function (err, result) {
locals.data.category = result;
locals.section = locals.data.category.name.toLowerCase();
next(err);
});
});
// Load sections
view.on('init', function (next) {
var q = keystone.list('Section').model.find().where('category').in([locals.data.category]).sort('sortOrder').exec(function(err, results) {
if (err || !results.length) {
return next(err);
}
async.each(results, function(section, next) {
keystone.list('Article').model.find().where('section').in([section.id]).sort('sortOrder').exec(function(err, articles){
var s = section;
if (articles.length) {
s.articles = articles;
locals.data.sections.push(s);
} else {
locals.data.sections.push(s);
}
});
}, function(err) {
console.log(locals.data.sections);
});
next(err);
});
});
view.render('category');
};
在我看来,我应该始终通过以下步骤:
sections: { _id: 574b909b43ff68163ed86bf2, publicTitle: 'Title 1', key: 'name-1', sortOrder: 3, name: 'Name 1', __v: 0, category: 574b8960947f45f034ac89b4, text: '', image: {} }
category: { _id: 574b8960947f45f034ac89b4, key: 'blabla', sortOrder: 1, name: 'Blabla', __v: 0, image: {} }
但60%的时候,我都会这样:
sections:
category: { _id: 574b8960947f45f034ac89b4, key: 'johndoe', sortOrder: 1, name: 'JohnDoe', __v: 0, image: {} }
奇怪的是,如果我转到另一个类别,它有更多的部分,像30篇文章,我90%的时间得到部分,但仍然缺少10%。这种情况在开发和生产中都存在
某些“下一步”()发射是否太早?我看不出我哪里搞砸了。好吧。在阅读了
async
之后,我设法使用async.parallel
使它正常工作
var keystone = require('keystone');
var async = require('async');
exports = module.exports = function (req, res) {
var view = new keystone.View(req, res);
var locals = res.locals;
// Init locals
locals.section = 'category';
locals.filters = {
category: req.params.category
};
locals.data = {
sections: [],
category: {}
};
// Load current category
view.on('init', function (next) {
var q = keystone.list('Category').model.findOne({
key: locals.filters.category
});
q.exec(function (err, result) {
locals.data.category = result;
locals.section = locals.data.category.name.toLowerCase();
getChildrenRecords(locals.data.category, next);
});
});
function getChildrenRecords(category, next){
var q = keystone.list('Section').model.find().where('category').in([category]).sort('sortOrder').exec(function(err, results) {
if (err || !results.length) {
return next(err);
}
callItems = [];
for(var i = 0; i < results.length; i++) {
var data = results[i];
callItems.push(makeCallbackFunction(data));
}
function makeCallbackFunction(section) {
return function (callback) {
keystone.list('Article').model.find().where('section').in([section.id]).sort('sortOrder').exec(function(err, articles){
if (err) return callback(err);
if (articles.length) { section.articles = articles; }
locals.data.sections.push(section);
callback();
});
};
}
async.parallel(callItems, function(err, results){
next(err);
});
});
}
// Render the view
view.render('category');
};
var keystone=require('keystone');
var async=require('async');
导出=模块。导出=功能(req,res){
var view=新的keystone.view(请求、恢复);
var局部变量=res.局部变量;
//初始局部变量
locals.section='category';
locals.filters={
类别:req.params.category
};
本地数据={
章节:[],
类别:{}
};
//负载电流类别
view.on('init',函数(下一个){
var q=keystone.list('Category').model.findOne({
关键字:locals.filters.category
});
q、 exec(函数(错误、结果){
locals.data.category=结果;
locals.section=locals.data.category.name.toLowerCase();
getChildrenRecords(locals.data.category,next);
});
});
函数getChildrenRecords(类别,下一个){
var q=keystone.list('Section').model.find().where('category').in([category]).sort('sortOrder').exec(函数(err,results){
if(err | |!results.length){
返回下一个(错误);
}
callItems=[];
对于(var i=0;i
好的。在阅读了async
之后,我设法使用async.parallel
使它正常工作
var keystone = require('keystone');
var async = require('async');
exports = module.exports = function (req, res) {
var view = new keystone.View(req, res);
var locals = res.locals;
// Init locals
locals.section = 'category';
locals.filters = {
category: req.params.category
};
locals.data = {
sections: [],
category: {}
};
// Load current category
view.on('init', function (next) {
var q = keystone.list('Category').model.findOne({
key: locals.filters.category
});
q.exec(function (err, result) {
locals.data.category = result;
locals.section = locals.data.category.name.toLowerCase();
getChildrenRecords(locals.data.category, next);
});
});
function getChildrenRecords(category, next){
var q = keystone.list('Section').model.find().where('category').in([category]).sort('sortOrder').exec(function(err, results) {
if (err || !results.length) {
return next(err);
}
callItems = [];
for(var i = 0; i < results.length; i++) {
var data = results[i];
callItems.push(makeCallbackFunction(data));
}
function makeCallbackFunction(section) {
return function (callback) {
keystone.list('Article').model.find().where('section').in([section.id]).sort('sortOrder').exec(function(err, articles){
if (err) return callback(err);
if (articles.length) { section.articles = articles; }
locals.data.sections.push(section);
callback();
});
};
}
async.parallel(callItems, function(err, results){
next(err);
});
});
}
// Render the view
view.render('category');
};
var keystone=require('keystone');
var async=require('async');
导出=模块。导出=功能(req,res){
var view=新的keystone.view(请求、恢复);
var局部变量=res.局部变量;
//初始局部变量
locals.section='category';
locals.filters={
类别:req.params.category
};
本地数据={
章节:[],
类别:{}
};
//负载电流类别
view.on('init',函数(下一个){
var q=keystone.list('Category').model.findOne({
关键字:locals.filters.category
});
q、 exec(函数(错误、结果){
locals.data.category=结果;
locals.section=locals.data.category.name.toLowerCase();
getChildrenRecords(locals.data.category,next);
});
});
函数getChildrenRecords(类别,下一个){
var q=keystone.list('Section').model.find().where('category').in([category]).sort('sortOrder').exec(函数(err,results){
if(err | |!results.length){
返回下一个(错误);
}
callItems=[];
对于(var i=0;i
尝试在1 init中嵌套查询。我从一开始就尝试过,因为某些原因,如果我这样做,页面将永远无法加载。另外,拥有两个init似乎也不是问题,这种方法在keystone中被广泛使用,甚至在样板文件中也是如此;在异步回调中,它也会导致永久加载。请尝试将查询嵌套在1 init中。我从一开始就尝试过,由于某种原因,如果我这样做,页面将永远加载。另外,拥有两个init似乎也不是问题,这种方法在keystone中被广泛使用,甚至在样板文件中也是如此;在异步回调中,它也会导致永久加载。