Vuex not reactive when mutate












0














I have an array tour_plan in my state which contains an object(s).



tour_plan = [
{
day:1,
location_id:3,
location_name:'Colombo'
}
]


I want to make this object



tour_plan = [
{
day:1,
location_id:3,
location_name:'Colombo',
tour_id:3,
tour_name:'City tour'
}
]


After gothourgh the docs in vuex in figureout that this won't work in reactive manner in vuex mutations.



state.tour_plan[state.tour_plan.length - 1].tour_id = payload.tour_id;
state.tour_plan[state.tour_plan.length - 1].tour_name = payload.tour_name;


So I tried these 2 ways.



state.tour_plan[state.tour_plan.length - 1] = { ...state.tour_plan[state.tour_plan.length - 1],
tour_id: payload.tour
};

Vue.$set(state.tour_plan[state.tour_plan.length - 1], 'tour_id', payload.tour);


But non of them also doesn't work.
Where is the problem in my code?










share|improve this question



























    0














    I have an array tour_plan in my state which contains an object(s).



    tour_plan = [
    {
    day:1,
    location_id:3,
    location_name:'Colombo'
    }
    ]


    I want to make this object



    tour_plan = [
    {
    day:1,
    location_id:3,
    location_name:'Colombo',
    tour_id:3,
    tour_name:'City tour'
    }
    ]


    After gothourgh the docs in vuex in figureout that this won't work in reactive manner in vuex mutations.



    state.tour_plan[state.tour_plan.length - 1].tour_id = payload.tour_id;
    state.tour_plan[state.tour_plan.length - 1].tour_name = payload.tour_name;


    So I tried these 2 ways.



    state.tour_plan[state.tour_plan.length - 1] = { ...state.tour_plan[state.tour_plan.length - 1],
    tour_id: payload.tour
    };

    Vue.$set(state.tour_plan[state.tour_plan.length - 1], 'tour_id', payload.tour);


    But non of them also doesn't work.
    Where is the problem in my code?










    share|improve this question

























      0












      0








      0







      I have an array tour_plan in my state which contains an object(s).



      tour_plan = [
      {
      day:1,
      location_id:3,
      location_name:'Colombo'
      }
      ]


      I want to make this object



      tour_plan = [
      {
      day:1,
      location_id:3,
      location_name:'Colombo',
      tour_id:3,
      tour_name:'City tour'
      }
      ]


      After gothourgh the docs in vuex in figureout that this won't work in reactive manner in vuex mutations.



      state.tour_plan[state.tour_plan.length - 1].tour_id = payload.tour_id;
      state.tour_plan[state.tour_plan.length - 1].tour_name = payload.tour_name;


      So I tried these 2 ways.



      state.tour_plan[state.tour_plan.length - 1] = { ...state.tour_plan[state.tour_plan.length - 1],
      tour_id: payload.tour
      };

      Vue.$set(state.tour_plan[state.tour_plan.length - 1], 'tour_id', payload.tour);


      But non of them also doesn't work.
      Where is the problem in my code?










      share|improve this question













      I have an array tour_plan in my state which contains an object(s).



      tour_plan = [
      {
      day:1,
      location_id:3,
      location_name:'Colombo'
      }
      ]


      I want to make this object



      tour_plan = [
      {
      day:1,
      location_id:3,
      location_name:'Colombo',
      tour_id:3,
      tour_name:'City tour'
      }
      ]


      After gothourgh the docs in vuex in figureout that this won't work in reactive manner in vuex mutations.



      state.tour_plan[state.tour_plan.length - 1].tour_id = payload.tour_id;
      state.tour_plan[state.tour_plan.length - 1].tour_name = payload.tour_name;


      So I tried these 2 ways.



      state.tour_plan[state.tour_plan.length - 1] = { ...state.tour_plan[state.tour_plan.length - 1],
      tour_id: payload.tour
      };

      Vue.$set(state.tour_plan[state.tour_plan.length - 1], 'tour_id', payload.tour);


      But non of them also doesn't work.
      Where is the problem in my code?







      vuejs2 vuex






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 21 '18 at 12:24









      Pathum Samararathna

      720620




      720620
























          2 Answers
          2






          active

          oldest

          votes


















          1














          You are correct about the fact you can't mutate an object/array item by index access without "breaking" the reactivity system.



          About what You've tried, according to the documentation of Vue.set, it expects as first argument the entire object/array rather than the length.



          So the correct manner is:



          Vue.$set(state.tour_plan, 0, payload.tour);


          where 0 is the index of the element you want to update(replace)






          share|improve this answer





















          • Thanks for your clue with the help of your answer I found a way to do that.
            – Pathum Samararathna
            Nov 23 '18 at 4:31



















          0














          This worked for me.



             Vue.set(state.tour_plan[state.tour_plan.length - 1], 'tour_id', payload.tour)
          Vue.set(state.tour_plan[state.tour_plan.length - 1], 'tour_payment', payload.tour_payment)
          Vue.set(state.tour_plan[state.tour_plan.length - 1], 'tour_name', payload.tour_name)





          share|improve this answer





















            Your Answer






            StackExchange.ifUsing("editor", function () {
            StackExchange.using("externalEditor", function () {
            StackExchange.using("snippets", function () {
            StackExchange.snippets.init();
            });
            });
            }, "code-snippets");

            StackExchange.ready(function() {
            var channelOptions = {
            tags: "".split(" "),
            id: "1"
            };
            initTagRenderer("".split(" "), "".split(" "), channelOptions);

            StackExchange.using("externalEditor", function() {
            // Have to fire editor after snippets, if snippets enabled
            if (StackExchange.settings.snippets.snippetsEnabled) {
            StackExchange.using("snippets", function() {
            createEditor();
            });
            }
            else {
            createEditor();
            }
            });

            function createEditor() {
            StackExchange.prepareEditor({
            heartbeatType: 'answer',
            autoActivateHeartbeat: false,
            convertImagesToLinks: true,
            noModals: true,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: 10,
            bindNavPrevention: true,
            postfix: "",
            imageUploader: {
            brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
            contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
            allowUrls: true
            },
            onDemand: true,
            discardSelector: ".discard-answer"
            ,immediatelyShowMarkdownHelp:true
            });


            }
            });














            draft saved

            draft discarded


















            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53411976%2fvuex-not-reactive-when-mutate%23new-answer', 'question_page');
            }
            );

            Post as a guest















            Required, but never shown

























            2 Answers
            2






            active

            oldest

            votes








            2 Answers
            2






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            1














            You are correct about the fact you can't mutate an object/array item by index access without "breaking" the reactivity system.



            About what You've tried, according to the documentation of Vue.set, it expects as first argument the entire object/array rather than the length.



            So the correct manner is:



            Vue.$set(state.tour_plan, 0, payload.tour);


            where 0 is the index of the element you want to update(replace)






            share|improve this answer





















            • Thanks for your clue with the help of your answer I found a way to do that.
              – Pathum Samararathna
              Nov 23 '18 at 4:31
















            1














            You are correct about the fact you can't mutate an object/array item by index access without "breaking" the reactivity system.



            About what You've tried, according to the documentation of Vue.set, it expects as first argument the entire object/array rather than the length.



            So the correct manner is:



            Vue.$set(state.tour_plan, 0, payload.tour);


            where 0 is the index of the element you want to update(replace)






            share|improve this answer





















            • Thanks for your clue with the help of your answer I found a way to do that.
              – Pathum Samararathna
              Nov 23 '18 at 4:31














            1












            1








            1






            You are correct about the fact you can't mutate an object/array item by index access without "breaking" the reactivity system.



            About what You've tried, according to the documentation of Vue.set, it expects as first argument the entire object/array rather than the length.



            So the correct manner is:



            Vue.$set(state.tour_plan, 0, payload.tour);


            where 0 is the index of the element you want to update(replace)






            share|improve this answer












            You are correct about the fact you can't mutate an object/array item by index access without "breaking" the reactivity system.



            About what You've tried, according to the documentation of Vue.set, it expects as first argument the entire object/array rather than the length.



            So the correct manner is:



            Vue.$set(state.tour_plan, 0, payload.tour);


            where 0 is the index of the element you want to update(replace)







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Nov 21 '18 at 13:01









            DobleL

            1,474513




            1,474513












            • Thanks for your clue with the help of your answer I found a way to do that.
              – Pathum Samararathna
              Nov 23 '18 at 4:31


















            • Thanks for your clue with the help of your answer I found a way to do that.
              – Pathum Samararathna
              Nov 23 '18 at 4:31
















            Thanks for your clue with the help of your answer I found a way to do that.
            – Pathum Samararathna
            Nov 23 '18 at 4:31




            Thanks for your clue with the help of your answer I found a way to do that.
            – Pathum Samararathna
            Nov 23 '18 at 4:31













            0














            This worked for me.



               Vue.set(state.tour_plan[state.tour_plan.length - 1], 'tour_id', payload.tour)
            Vue.set(state.tour_plan[state.tour_plan.length - 1], 'tour_payment', payload.tour_payment)
            Vue.set(state.tour_plan[state.tour_plan.length - 1], 'tour_name', payload.tour_name)





            share|improve this answer


























              0














              This worked for me.



                 Vue.set(state.tour_plan[state.tour_plan.length - 1], 'tour_id', payload.tour)
              Vue.set(state.tour_plan[state.tour_plan.length - 1], 'tour_payment', payload.tour_payment)
              Vue.set(state.tour_plan[state.tour_plan.length - 1], 'tour_name', payload.tour_name)





              share|improve this answer
























                0












                0








                0






                This worked for me.



                   Vue.set(state.tour_plan[state.tour_plan.length - 1], 'tour_id', payload.tour)
                Vue.set(state.tour_plan[state.tour_plan.length - 1], 'tour_payment', payload.tour_payment)
                Vue.set(state.tour_plan[state.tour_plan.length - 1], 'tour_name', payload.tour_name)





                share|improve this answer












                This worked for me.



                   Vue.set(state.tour_plan[state.tour_plan.length - 1], 'tour_id', payload.tour)
                Vue.set(state.tour_plan[state.tour_plan.length - 1], 'tour_payment', payload.tour_payment)
                Vue.set(state.tour_plan[state.tour_plan.length - 1], 'tour_name', payload.tour_name)






                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 23 '18 at 4:31









                Pathum Samararathna

                720620




                720620






























                    draft saved

                    draft discarded




















































                    Thanks for contributing an answer to Stack Overflow!


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid



                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.


                    To learn more, see our tips on writing great answers.





                    Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


                    Please pay close attention to the following guidance:


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid



                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.


                    To learn more, see our tips on writing great answers.




                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function () {
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53411976%2fvuex-not-reactive-when-mutate%23new-answer', 'question_page');
                    }
                    );

                    Post as a guest















                    Required, but never shown





















































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown

































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown







                    Popular posts from this blog

                    Wiesbaden

                    To store a contact into the json file from server.js file using a class in NodeJS

                    Marschland