Issue while rendering Vuex

Question

Issue while rendering Vuex

Currently in the process of setting up a project using Vuex and Vue, I have encountered a peculiar issue. It seems to be related to the order of rendering, but despite multiple attempts to modify the code, the problem persists.

My approach involved accessing the state with getters in the parent component and passing it via a slot, instead of directly in the child component, as I will demonstrate below.

Even though I attempted to pass the value using $this.$store.state and found it to be undefined, a console log within an instance method revealed that all the data was indeed present.

You can view my code here.

The error message in the provided link is similar to the one I am encountering:

[Vue warn]: Error in render: "TypeError: Cannot read property 'state' of undefined"

Thank you to anyone willing to take the time to investigate.

P.S: When I changed it to store.state.stake.value, the content displayed correctly, but a new error arose:

[Vue warn]: Invalid handler for event "click": got undefined

javascript vue.js vuex vuex-modules

Answer 1

Answer №1

emphasized textWhen working with mutations, it is important to access the state correctly. Avoid using this.$store.state because this does not refer to the vue instance.

Instead, the mutation handler should receive the state as the first argument:

myMutation(state){
    //use state argument to access state
}

Check out the updated code sandbox

Another important point to note is that mapMutations is a helper function that maps component methods to store.commit calls. These should be included in the methods option of the component, not in computed as they do not compute anything.

Answer 2

emphasized textWhen working with mutations, it is important to access the state correctly. Avoid using this.$store.state because this does not refer to the vue instance.

Instead, the mutation handler should receive the state as the first argument:

myMutation(state){
    //use state argument to access state
}

Check out the updated code sandbox

Another important point to note is that mapMutations is a helper function that maps component methods to store.commit calls. These should be included in the methods option of the component, not in computed as they do not compute anything.

Answer 3

Answer №2

Make sure to pass the state as an argument in your mutation functions, as shown below:

updateCounter(state) { 
  state.counterValue++;
},

Remember, you only need to access this.$store in your Vue components, not in your store itself.

Answer 4

Make sure to pass the state as an argument in your mutation functions, as shown below:

updateCounter(state) { 
  state.counterValue++;
},

Remember, you only need to access this.$store in your Vue components, not in your store itself.

Issue while rendering Vuex

Answer №1

Answer №2

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