What is the process for swapping one object for another within an array?

Question

What is the process for swapping one object for another within an array?

Is there a way in vue.js to substitute the social key in the array with another object's key that has a matching value? For instance:

netTeams: {
            0: {
                social: 'Twitter',
                name: 'Red',
                id: 32,
                group: 'a'
            },
            1: {
                social: 'Twitter',
                name: 'Green',
                id: 33,
                group: 'b'
            }
        }

and

socials: {
            1: Facebook,
            2: Instagram,
            3: Twitter,
            4: Youtube
        }

The desired output would be:

netTeams: {
        0: {
            social: 3,
            name: 'Red',
            id: 32,
            group: 'a'
        },
        1: {
            social: 3,
            name: 'Green',
            id: 33,
            group: 'b'
        }
    }

I attempted using a computed property, but encountered errors. Any suggestions or tips would be highly appreciated!

javascript vue.js vuejs2

Answer 1

Answer №1

Before we dive in, it's important to note that this question pertains more to pure JavaScript rather than Vue.js.

In order to achieve your goal, you'll need to follow these steps:

Go through each team and assign the appropriate value for each team
Determine the correct value by matching the team name with the values in the socials array (using either index or object key)
Create a duplicate of the team with the newly discovered "social" value
Encapsulate everything within a computed property to ensure reactivity when netTeams undergoes changes.

Refer to the code snippet below for the complete implementation.

It would have been simpler if you could convert your index-based objects into actual arrays (e.g., ['Facebook', 'Twitter'] instead of {0: 'Facebook', 1: 'Twitter'}).

<html>
<div id="app">
  <pre>{{ socialsWithIndex }}</pre>
</div>

<!-- Ensure Vue is included from CDN! -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<script>
  new Vue({
    el: '#app',
    data() {
      return {
        socials: {
          1: 'Facebook',
          2: 'Twitter',
          3: 'LinkedIn',
        },
        netTeams: {
            0: {
                social: 'Twitter',
                name: 'Red',
                id: 32,
                group: 'a'
            },
            1: {
                social: 'Twitter',
                name: 'Green',
                id: 33,
                group: 'b'
            },
            2: {
                social: 'Facebook',
                name: 'Blue',
                id: 34,
                group: 'c'
            }
        }
      }
    },
    computed: {
      socialsWithIndex() {
        // Iterate over each team (after converting to an array)
        return Object.values(this.netTeams).map(team => {
          // Retrieve the socials index using the value. Split into entries to access both key and value
          const [correspondingSocialIndex,] = Object.entries(this.socials).find(([socialIndex, socialName]) => socialName === team.social)

          /* Alternatively, you can use this approach if your object keys are always indexes
           * const correspondingSocialIndex = Object.values(this.socials).findIndex(socialName => socialName === team.social)
           */

          // Create a new team copy with the updated "social" key value
          return {
            ...team,
            social: parseInt(correspondingSocialIndex, 10) // Convert the string key to a number
          }
        })
      }
    },
  });
</script>
</html>

Answer 2

Before we dive in, it's important to note that this question pertains more to pure JavaScript rather than Vue.js.

In order to achieve your goal, you'll need to follow these steps:

Go through each team and assign the appropriate value for each team
Determine the correct value by matching the team name with the values in the socials array (using either index or object key)
Create a duplicate of the team with the newly discovered "social" value
Encapsulate everything within a computed property to ensure reactivity when netTeams undergoes changes.

Refer to the code snippet below for the complete implementation.

It would have been simpler if you could convert your index-based objects into actual arrays (e.g., ['Facebook', 'Twitter'] instead of {0: 'Facebook', 1: 'Twitter'}).

<html>
<div id="app">
  <pre>{{ socialsWithIndex }}</pre>
</div>

<!-- Ensure Vue is included from CDN! -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<script>
  new Vue({
    el: '#app',
    data() {
      return {
        socials: {
          1: 'Facebook',
          2: 'Twitter',
          3: 'LinkedIn',
        },
        netTeams: {
            0: {
                social: 'Twitter',
                name: 'Red',
                id: 32,
                group: 'a'
            },
            1: {
                social: 'Twitter',
                name: 'Green',
                id: 33,
                group: 'b'
            },
            2: {
                social: 'Facebook',
                name: 'Blue',
                id: 34,
                group: 'c'
            }
        }
      }
    },
    computed: {
      socialsWithIndex() {
        // Iterate over each team (after converting to an array)
        return Object.values(this.netTeams).map(team => {
          // Retrieve the socials index using the value. Split into entries to access both key and value
          const [correspondingSocialIndex,] = Object.entries(this.socials).find(([socialIndex, socialName]) => socialName === team.social)

          /* Alternatively, you can use this approach if your object keys are always indexes
           * const correspondingSocialIndex = Object.values(this.socials).findIndex(socialName => socialName === team.social)
           */

          // Create a new team copy with the updated "social" key value
          return {
            ...team,
            social: parseInt(correspondingSocialIndex, 10) // Convert the string key to a number
          }
        })
      }
    },
  });
</script>
</html>

Answer 3

Answer №2

Give this code a try and see the results

const teamsData = {
    0: {
        platform: 'Twitter',
        name: 'Red',
        id: 32,
        group: 'a'
    },
    1: {
        platform: 'Twitter',
        name: 'Green',
        id: 33,
        group: 'b'
    }
};

const platforms = {
            1: 'Facebook',
            2: 'Instagram',
            3: 'Twitter',
            4: 'Youtube',
        };
const reversedPlatforms = Object.keys(platforms).reduce((acc, key) => {
   acc[platforms[key]] = Number(key)
   return acc
}, {});
console.log(reversedPlatforms);

const updatedData = {}
for ([key, value] of Object.entries(teamsData)) {
   console.log(key)
   updatedData[key] = {
       ...value,
       platform: reversedPlatforms[value.platform],
   }
}

console.log(updatedData)

Answer 4

Give this code a try and see the results

const teamsData = {
    0: {
        platform: 'Twitter',
        name: 'Red',
        id: 32,
        group: 'a'
    },
    1: {
        platform: 'Twitter',
        name: 'Green',
        id: 33,
        group: 'b'
    }
};

const platforms = {
            1: 'Facebook',
            2: 'Instagram',
            3: 'Twitter',
            4: 'Youtube',
        };
const reversedPlatforms = Object.keys(platforms).reduce((acc, key) => {
   acc[platforms[key]] = Number(key)
   return acc
}, {});
console.log(reversedPlatforms);

const updatedData = {}
for ([key, value] of Object.entries(teamsData)) {
   console.log(key)
   updatedData[key] = {
       ...value,
       platform: reversedPlatforms[value.platform],
   }
}

console.log(updatedData)

What is the process for swapping one object for another within an array?

Answer №1

Answer №2

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