Tips for utilizing the MutationAction feature in vuex-module-decorators

Question

Tips for utilizing the MutationAction feature in vuex-module-decorators

I am currently exploring the functionality of vuex-module-decorators found at . Suppose my module's state includes a property called dir which is a dictionary structure: {[key: string]: string}. Can I utilize @MutationAction to update an element within that dictionary? The code example below may not be correct, but it attempts to convey my intentions.

export default class Module extends VuexModule {
  dir: {[key: string]: string}

  @MutationAction(???)
  updateDir(keyValue) {
    return keyValue // ???
  }
}

Is there any documentation available on how to properly use @MutationAction, including what arguments it accepts and what actual mutation it triggers?

typescript vuex

Answer 1

Answer №1

Check out the recommended approach below -

export default class Module extends VuexModule {
  dir: {[key: string]: string}

  @MutationAction(['dir'])
  async updateDir(keyValue) {
    const currDir = this.dir

    // perform any asynchronous tasks (like network requests) here
    currDir['myKey'] = keyValue

    return ( { dir: currDir } )
  }
}

However, if you don't have any asynchronous tasks to handle initially.

export default class Module extends VuexModule {
  dir: {[key: string]: string}

  @Mutation
  async updateDir(keyValue) {
    this.dir.myKey = keyValue
  }
}

P.S. The creator of vuex-module-decorators also authored this content.

Answer 2

Check out the recommended approach below -

export default class Module extends VuexModule {
  dir: {[key: string]: string}

  @MutationAction(['dir'])
  async updateDir(keyValue) {
    const currDir = this.dir

    // perform any asynchronous tasks (like network requests) here
    currDir['myKey'] = keyValue

    return ( { dir: currDir } )
  }
}

However, if you don't have any asynchronous tasks to handle initially.

export default class Module extends VuexModule {
  dir: {[key: string]: string}

  @Mutation
  async updateDir(keyValue) {
    this.dir.myKey = keyValue
  }
}

P.S. The creator of vuex-module-decorators also authored this content.

Answer 3

Answer №2

As a newcomer to vuex, I managed to get this code working:

export class MyModule extends VuexModule {

    public dir: { [key: string]: string } = {};

    @MutationAction({ mutate: ['dir'] })
    public async updateDir(key: string, value: string) {
        const newDir: { [key: string]: string } = {};
        newDir[key] = value;
        return {
            dir: newDir,
        };
    }

    @MutationAction({ mutate: ['dir'] })
    public async addToDir(key: string, value: string) {
        this.dir[key] = value;
        return {
            dir: this.dir,
        };
    }
}

I'm unsure if it's recommended to modify and reassign the 'dir' variable like I did in the second method.

Answer 4

As a newcomer to vuex, I managed to get this code working:

export class MyModule extends VuexModule {

    public dir: { [key: string]: string } = {};

    @MutationAction({ mutate: ['dir'] })
    public async updateDir(key: string, value: string) {
        const newDir: { [key: string]: string } = {};
        newDir[key] = value;
        return {
            dir: newDir,
        };
    }

    @MutationAction({ mutate: ['dir'] })
    public async addToDir(key: string, value: string) {
        this.dir[key] = value;
        return {
            dir: this.dir,
        };
    }
}

I'm unsure if it's recommended to modify and reassign the 'dir' variable like I did in the second method.

Tips for utilizing the MutationAction feature in vuex-module-decorators

Answer №1

Answer №2

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