Utilizing Vuex to Access a Component's Property in Vue

Question

Utilizing Vuex to Access a Component's Property in Vue

Utilizing Vuex in my app is integral for executing asynchronous tasks, such as logging a user into the application. Upon successful login and execution of axios.then(), I aim to notify the component from which I invoked this.$store.dispatch('login', {username: userObj.username, password: userObj.password});


    data() {
        test: false
    },

    methods: {

        login() {
            const userObj = {
                username: this.username,
                password: this.password
            };
            console.log(userObj);
            this.$store.dispatch('login',
                {
                    username: userObj.username, password: userObj.password
                });
        }
    },

Vuex:

const actions = {
    login({ commit }, authData) {
        axios.post('/login', {
            username: authData.username,
            password: authData.password
        })
            .then(resp => {
                console.log(resp);
                localStorage.setItem('token', resp.data.authToken);
                localStorage.setItem('userId', resp.data.id);
                localStorage.setItem('user', resp.data);
                commit('storeUser', resp.data);
                router.replace('/dashboard');
            })
            .catch(e => {
                console.log(e);
                alert('Something went wrong, try again')
            });
    },
}

In the .then() method within Vuex, I am looking for assistance in altering the test property to true in my component. Any advice or solutions would be greatly appreciated!

javascript vue.js vuex

Answer 1

Answer №1

To make use of asynchronous behavior in vuex actions, you can return a Promise:

const actions = {
    login({ commit }, authData) {
        return new Promise((resolve, reject) => {
            axios.post('/login', {
                username: authData.username,
                password: authData.password
            })
                .then(resp => {
                    console.log(resp);
                    localStorage.setItem('token', resp.data.authToken);
                    localStorage.setItem('userId', resp.data.id);
                    localStorage.setItem('user', resp.data);
                    commit('storeUser', resp.data);
                    router.replace('/dashboard');
                    resolve(resp);
                })
                .catch(e => {
                    console.log(e);
                    alert('Something went wrong, try again')
                    reject(e);
                });
        })
    },
}

You can handle the promises from actions seamlessly when dispatching them:

// Example usage inside a component
this.
  $store.
  dispatch('login', {username: userObj.username, password: userObj.password})
  .then(resp => { /* Handle response here using component data and methods */);

Answer 2

To make use of asynchronous behavior in vuex actions, you can return a Promise:

const actions = {
    login({ commit }, authData) {
        return new Promise((resolve, reject) => {
            axios.post('/login', {
                username: authData.username,
                password: authData.password
            })
                .then(resp => {
                    console.log(resp);
                    localStorage.setItem('token', resp.data.authToken);
                    localStorage.setItem('userId', resp.data.id);
                    localStorage.setItem('user', resp.data);
                    commit('storeUser', resp.data);
                    router.replace('/dashboard');
                    resolve(resp);
                })
                .catch(e => {
                    console.log(e);
                    alert('Something went wrong, try again')
                    reject(e);
                });
        })
    },
}

You can handle the promises from actions seamlessly when dispatching them:

// Example usage inside a component
this.
  $store.
  dispatch('login', {username: userObj.username, password: userObj.password})
  .then(resp => { /* Handle response here using component data and methods */);

Answer 3

Answer №2

One key aspect of utilizing the Vuex store is to avoid directly modifying your component's props or data. Instead, the recommended approach is to store the necessary data in Vuex and keep track of any changes or updates within the component. For instance, within your login action, you might include something along these lines:

// Implement the necessary changes within the store
commit('storeTest', true);

Subsequently, within the component:

computed: {
    // Retrieve the stored value from the Vuex store
    test: () => {
        return this.$store.test;
    }
},

Answer 4

One key aspect of utilizing the Vuex store is to avoid directly modifying your component's props or data. Instead, the recommended approach is to store the necessary data in Vuex and keep track of any changes or updates within the component. For instance, within your login action, you might include something along these lines:

// Implement the necessary changes within the store
commit('storeTest', true);

Subsequently, within the component:

computed: {
    // Retrieve the stored value from the Vuex store
    test: () => {
        return this.$store.test;
    }
},

Answer 5

Answer №3

To utilize Vuex actions effectively, it is important to understand that they are thennable. This means that when dispatching an action in a component, the structure should resemble something along these lines:

this.$store.dispatch('login', { username: userObj.username, password: userObj.password }).then(res => {
// handling response
});

Additionally, the action must return the response for it to function as intended.

const actions = {
    login({ commit }, authData) {
        axios.post('/login', {
            username: authData.username,
            password: authData.password
        })
            .then(resp => {
                console.log(resp);
                localStorage.setItem('token', resp.data.authToken);
                localStorage.setItem('userId', resp.data.id);
                localStorage.setItem('user', resp.data);
                commit('storeUser', resp.data);
                router.replace('/dashboard');
                return resp
            })
            .catch(e => {
                console.log(e);
                alert('An error occurred, please try again')
            });
    },
}

Answer 6

To utilize Vuex actions effectively, it is important to understand that they are thennable. This means that when dispatching an action in a component, the structure should resemble something along these lines:

this.$store.dispatch('login', { username: userObj.username, password: userObj.password }).then(res => {
// handling response
});

Additionally, the action must return the response for it to function as intended.

const actions = {
    login({ commit }, authData) {
        axios.post('/login', {
            username: authData.username,
            password: authData.password
        })
            .then(resp => {
                console.log(resp);
                localStorage.setItem('token', resp.data.authToken);
                localStorage.setItem('userId', resp.data.id);
                localStorage.setItem('user', resp.data);
                commit('storeUser', resp.data);
                router.replace('/dashboard');
                return resp
            })
            .catch(e => {
                console.log(e);
                alert('An error occurred, please try again')
            });
    },
}

Answer 7

Answer №4

When dealing with mutations, you have the option to utilize the subscribe method or the subscribeAction method for actions as outlined below:

mounted() {
    this.$store.subscribeAction({
        before: (action, state) => {
            switch (action.type) {
                case 'login':
                    this.test = false;
                    break;
            }
        },
        after: (action, state) => {
            switch (action.type) {
                case 'login':
                    this.test = true;
                    break;
            }
        }
    });
}

Answer 8

When dealing with mutations, you have the option to utilize the subscribe method or the subscribeAction method for actions as outlined below:

mounted() {
    this.$store.subscribeAction({
        before: (action, state) => {
            switch (action.type) {
                case 'login':
                    this.test = false;
                    break;
            }
        },
        after: (action, state) => {
            switch (action.type) {
                case 'login':
                    this.test = true;
                    break;
            }
        }
    });
}

Utilizing Vuex to Access a Component's Property in Vue

Answer №1

Answer №2

Answer №3

Answer №4

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