[英]Vuex Mutation not Updating State
I'm having a little of issue here.我这里有点问题。 My mutation doesn't update the state until I refresh the page.
在我刷新页面之前,我的突变不会更新状态。
Action行动
async restoreDeletedCours({ commit }, cours) {
let response = await Axios.post("/dashboard/school/cours/restoreDeletedCours", cours);
let crs = response.data.data;
if (response.status == 200 || response.status == 201) {
commit("REMOVE_COURS_FROM_DELETED_LIST", crs);
commit("RESTORE_SCHOOL_DELETED_COURS", crs);
return response.data;
}
}
MUTATION突变
REMOVE_COURS_FROM_DELETED_LIST(state, crs) {
// Let's remove the restored Item from deleted List
let removeFromDeletedList = state.deletedCourses.filter(c => c.id != crs.id);
state.deletedCourses = removeFromDeletedList;
}
The problem is the reactivity of the Mutation , the way you are mutating the array is not reactive, arrays are reactive when treated well, whether they are local variables from a component or Vuex states they have the same behavior:问题是Mutation 的反应性,你改变数组的方式不是反应性的,如果处理得当,数组是反应性的,无论它们是来自组件的局部变量还是 Vuex 状态它们具有相同的行为:
This assignation is not reactive for arrays此分配对数组没有反应
state.deletedCourses = removeFromDeletedList;
Try this instead:试试这个:
Mutation:突变:
REMOVE_COURS_FROM_DELETED_LIST(state, crs) {
//We get the indexes that we have to remove
let indexArr = state.reduce(function(acc, val, index) {
if (val != crs.id) {
acc.push(index);
}
return acc;
}, []);
//We iterate this indexes and mutate properly the state array so changes are reactive
indexArr.forEach( i => state.deletedCourses.splice(i,1) );
}
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