axios parameter encoding in vue.js

Question

I am using vue.js with axios to fetch data from an API endpoint.

The url I need is something like this:

https://base_url.com?f=json&where=&returnGeometry=false&spatialRel=esriSpatialRelIntersects&geometry={"rings":[[[346564.4406999983,6675729.9070999995],[346507.04410000145,6675711.315700002],[346501.2646000013,6675723.884199999],[346495.0234000012,6675737.456500001],[346555.5135000013,6675757.049900003],[346555.91690000147,6675757.180699997],[346555.92969999835,6675757.141800001],[346557.9803000018,6675750.865099996],[346559.90100000054,6675744.985399999],[346560.7393000014,6675742.419500001],[346564.2879999988,6675731.5568],[346564.4406999983,6675729.9070999995]]],"spatialReference":{"wkid":102100,"latestWkid":3857}}&geometryType=esriGeometryPolygon&inSR=102100&outFields=*&outSR=102100

But somehow, axios turns the params into something like this:

?f=json&where=&returnGeometry=false&spatialRel=esriSpatialRelIntersects
&geometry=%257B%2522rings%2522%253A%255B%255B%255B346564.4406999983%252C6675729.9070999995%255D%252C%255B346507.04410000145%252C6675711.315700002%255D%252C%255B346501.2646000013%252C6675723.884199999%255D%252C%255B346495.0234000012%252C6675737.456500001%255D%252C%255B346555.5135000013%252C6675757.049900003%255D%252C%255B346555.91690000147%252C6675757.180699997%255D%252C%255B346555.92969999835%252C6675757.141800001%255D%252C%255B346557.9803000018%252C6675750.865099996%255D%252C%255B346559.90100000054%252C6675744.985399999%255D%252C%255B346560.7393000014%252C6675742.419500001%255D%252C%255B346564.2879999988%252C6675731.5568%255D%252C%255B346564.4406999983%252C6675729.9070999995%255D%255D%255D%252C%2522spatialReference%2522%253A%257B%2522wkid%2522%253A102100%252C%2522latestWkid%2522%253A3857%257D%257D&geometryType=esriGeometryPolygon&inSR=102100&outFields=*&outSR=102100

The endpoint however expects the params to be like this:

f=json&where=&returnGeometry=false&spatialRel=esriSpatialRelIntersects&geometry=%7B%22rings%22%3A%5B%5B%5B346564.4406999983%2C6675729.9070999995%5D%2C%5B346507.04410000145%2C6675711.315700002%5D%2C%5B346501.2646000013%2C6675723.884199999%5D%2C%5B346495.0234000012%2C6675737.456500001%5D%2C%5B346555.5135000013%2C6675757.049900003%5D%2C%5B346555.91690000147%2C6675757.180699997%5D%2C%5B346555.92969999835%2C6675757.141800001%5D%2C%5B346557.9803000018%2C6675750.865099996%5D%2C%5B346559.90100000054%2C6675744.985399999%5D%2C%5B346560.7393000014%2C6675742.419500001%5D%2C%5B346564.2879999988%2C6675731.5568%5D%2C%5B346564.4406999983%2C6675729.9070999995%5D%5D%5D%2C%22spatialReference%22%3A%7B%22wkid%22%3A102100%2C%22latestWkid%22%3A3857%7D%7D

It looks as if the encoding for the geometry parameter is wrong or something else than what the api expects.

This is my code:

return axios
            .get(process.env.VUE_APP_WATERINFO_RISK_URL, {
                params: {
                    f: 'json',
                    where: '',
                    returnGeometry: false,
                    spatialRel: 'esriSpatialRelIntersects',
                    geometry:
                    {
                        "rings": [[[346564.4406999983, 6675729.9070999995], [346507.04410000145, 6675711.315700002], [346501.2646000013, 6675723.884199999], [346495.0234000012, 6675737.456500001], [346555.5135000013, 6675757.049900003], [346555.91690000147, 6675757.180699997], [346555.92969999835, 6675757.141800001], [346557.9803000018, 6675750.865099996], [346559.90100000054, 6675744.985399999], [346560.7393000014, 6675742.419500001], [346564.2879999988, 6675731.5568], [346564.4406999983, 6675729.9070999995]]],
                        "spatialReference": { "wkid": 102100, "latestWkid": 3857 }
                    }
                    ,
                    geometryType: 'esriGeometryPolygon',
                    inSR: '102100',
                    outFields: '*',
                    outSR: '102100',
                    callback: ''
                }
            })
            .then(
                response => {
                    console.log(response);

                })
            .catch(error => {
                console.log(error);
            });

What should I do to get my data/url in the right format for the endpoint?

Many thanks in advance :)

I don't know? I need the geometry param to be encoded like this: &geometry=%7B%22rings%22%3A%5B%5B%5B346564.4406999983 etc ``` so you are suggesting that I build the querystring myself using the paramsSerializer ? I wished for something simpler :) But I will give it a try — Tim Vande Walle, Dec 29 '21 at 13:01
Try to stringify geometry like: `geometry: JSON.stringify({ rings: [...], ... })` — Vasile Radeanu, Dec 29 '21 at 14:06

score 2 · Answer 1 · answered Dec 30 '21 at 11:24

you can use this type:

const axios = require('axios')


const params = new URLSearchParams()
params.append('name', 'Akexorcist')
params.append('age', '28')
params.append('position', 'Android Developer')
params.append('description', 'birthdate=25-12-1989&favourite=coding%20coding%20and%20coding&company=Nextzy%20Technologies&website=http://www.akexorcist.com/')
params.append('awesome', true)

const config = {
  headers: {
    'Content-Type': 'application/x-www-form-urlencoded'
  }
}

axios.post(url, params, config)
  .then((result) => {
    // Do somthing
  })
  .catch((err) => {
    // Do somthing
  })

or You can pass options as parameters to your method:

testMethodforCallApi(){
const options = {
                    f: 'json',
                    where: '',
                    returnGeometry: false,
                    spatialRel: 'esriSpatialRelIntersects',
                    geometry:
                    {
                        "rings": [[[346564.4406999983, 6675729.9070999995], [346507.04410000145, 6675711.315700002], [346501.2646000013, 6675723.884199999], [346495.0234000012, 6675737.456500001], [346555.5135000013, 6675757.049900003], [346555.91690000147, 6675757.180699997], [346555.92969999835, 6675757.141800001], [346557.9803000018, 6675750.865099996], [346559.90100000054, 6675744.985399999], [346560.7393000014, 6675742.419500001], [346564.2879999988, 6675731.5568], [346564.4406999983, 6675729.9070999995]]],
                        "spatialReference": { "wkid": 102100, "latestWkid": 3857 }
                    }
                    ,
                    geometryType: 'esriGeometryPolygon',
                    inSR: '102100',
                    outFields: '*',
                    outSR: '102100',
                    callback: ''
};
API.APIMethod(options).then(response => {
console.log(response)});
}

And Then:

APIMethod(options) {
return axios.get(process.env.VUE_APP_WATERINFO_RISK_URL, {Params: options});
}

axios parameter encoding in vue.js

1 Answers1