About Vue. How to encapsulate Axios to reduce request code redundancy - vue.js

Question

Now I'm writing a project using Vue.I used a lot of Axios requests,
How to encapsulate the request code to reduce redundancy.
getProvinces() {
this.axios
.get(this.gv.serverUrl + "/location/province/list")
.then((res) => {
this.location.province.provinces = res.data.data;
});
},
getCities() {
this.axios
.get(this.gv.serverUrl + "/location/city/list", {
params: {
pid: this.location.province.province,
},
})
.then((res) => {
this.location.city.cities = res.data.data;
});
},
getCountries() {
this.axios
.get(this.gv.serverUrl + "/location/country/list", {
params: {
cid: this.location.city.city,
},
})
.then((res) => {
this.location.country.countries = res.data.data;
});
},

Answer 1

Use Axios.all to do concurrent requests. That will help you to encapsulate status of all requests.
Not exactly but something like this given below:
let endpoints = [
'https://this.gv.serverUrl + "/location/province/list"',
'https://this.gv.serverUrl + "/location/city/list"',
'https://api.github.com/users/ejirocodes/followers',
'https://api.github.com/users/ejirocodes/following'
];
axios.all(endpoints.map((endpoint) => axios.get(endpoint))).then(
(data) => console.log(data),
)
Here is the link for more help and good explanation: https://blog.logrocket.com/using-axios-all-make-concurrent-requests/

Answer 2

You could create a method that makes the axios call, passing the path and the params (as an optional argument). So a method that could work for the code you are providing could be:
fetch(resource, params) {
return this.axios.get(this.gv.serverUrl + `/location/${resource}/list`, { params })
This fetch method would return a promise, and your methods would look like this:
getProvinces() {
this.fetch("/location/province/list")
.then((res) => {
this.location.province.provinces = res.data.data;
});
},
getCities() {
this.fetch("/location/city/list", { pid: this.location.province.province })
.then((res) => {
this.location.city.cities = res.data.data;
});
},
getCountries() {
this.fetch("/location/country/list", { cid: this.location.city.city})
.then((res) => {
this.location.country.countries = res.data.data;
});
},
A further refactor could be conducted if there was some kind of uniformity in the data property of the Vue instance.
I cannot see the shape of your data property, but from what I see it looks something like this:
data() {
return {
location: {
province: {
provinces: [...],
},
city: {
cities: [...],
},
country: {
countries: [...],
},
}
}
}
If you could change it to something like this:
data() {
return {
location: {
province: {
list: [...],
},
city: {
list: [...],
},
country: {
list: [...],
},
}
}
Then the refactor of the methods could be this:
fetch(resource, params) {
return this.axios
.get(this.gv.serverUrl + `/location/${resource}/list`, { params })
.then((res) => {
this.location[resource].list = res.data.data;
})
getProvinces() {
this.fetch("/location/province/list")
},
getCities() {
this.fetch("/location/city/list", { pid: this.location.province.province })
},
getCountries() {
this.fetch("/location/country/list", { cid: this.location.city.city})
},