I am currently working on a function within a project that is designed to replace instances of
/endpoint/{item.id}/disable/{item.name}/endpoint/123/disable/lorem when the function is provided with the URL and item details.
The item is expected to contain the keys id and name.
What is the most effective method for identifying items in the format of {item.KEY} and substituting them with item.KEY?
One efficient approach to tackle this challenge is by utilizing a function to handle regular expressions. I have made adjustments to your parameters to streamline the mapping process, but feel free to customize them as needed.
let url = '/api/{id}/info/{type}'; //Adjusted parameters for clarity
const data = { id: 456, type: 'example' };
url = url.replace(/{([^}]*)}/g, function (property) {
let key = property.substr(1, property.length - 2);
if (data[key])
return encodeURIComponent(data[key]);
else
throw new Error('The property "' + key + '" is required but missing in the data object');
});
//console.log(url);
Check it out on JSFiddle: https://jsfiddle.net/3rd8bnx0/1/
If you are looking for an alternative to using eval, you can consider implementing a function like the one mentioned in this link:
var item = {
id: 123,
KEY: "lorem"
};
function pick(o, s) {
s = s.replace(/\[(\w+)\]/g, '.$1'); // convert indexes to properties
s = s.replace(/^\./, ''); // strip a leading dot
var a = s.split('.');
for (var i = 0, n = a.length; i < n; ++i) {
var k = a[i];
if (k in o) {
o = o[k];
} else {
return;
}
}
return o;
}
After implementing the function, you can then use the following code snippet:
str.replace(/{.*?}/g, function(match){ // match {...}
var path = match.substring(1,match.length-1); // get rid of brackets.
return pick(scope, path); //get value and replace it in string.
});
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