I am new to async function and I'm tring to chain some function but I can't figure out why I can't return the last call
var container = { Login: '', sign_up_text: '', forget_password: '', login_button: '' }
var lang = 'de-DE'
var langID = 1
async function getVars (key, lang){
return db.localization.findOne({
where: {
key: key,
lang: lang
}
})
}
async function getLangID (lang){
return db.localGroups.findOne({ where: {
i10s: lang
},
attributes: ['id']
})
}
async function getLocalvars (container, lang){
var newcontainer = container
for (let key in container) {
console.log(lang)
await getVars(key, lang)
.then(data => {
newcontainer[data.key] = data.value;
})
}
return newcontainer;
}
async function desprate() {
getLangID(lang)
.then(langdata => {
getLocalvars(container, langdata.id)
.then(data => {
console.log(data);
return data;
})
})
}
console.log(desprate());
Not even a promise shows up in the log ;(
Thank you!
I'll give this a shot. I haven't tested this but I'll try to hit the key concepts here in the comments.
var container = {
Login: '',
sign_up_text: '',
forget_password: '',
login_button: '',
};
var lang = 'de-DE';
var langID = 1;
async function getVars(key, lang) {
return db.localization.findOne({
where: {
key: key,
lang: lang,
},
});
}
async function getLangID(lang) {
return db.localGroups.findOne({
where: {
i10s: lang,
},
attributes: ['id'],
});
}
async function getLocalvars(container, lang) {
var newcontainer = container;
// since you're iterating over an object you will have to await all the promises that result in the loop
await Promise.all(
Object.keys(container).map(async (key) => {
const data = await getVars(key, lang);
// since this is an async function you can just await it rather than chaining it with then
newcontainer[data.key] = data.value;
})
);
return newcontainer;
}
async function desprate() {
// let's again take advantage of async/await here
const langdata = await getLangID(lang);
const data = await getLocalvars(container, langdata.id);
console.log(data);
return data;
}
console.log(desprate());