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

      710619




      710619
























          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





















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            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

                710619




                710619






























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