How to loop over the redux state data after redux action has completed












0















I have a basic need about redux actions but I don't know how can i solve it.



This is my scenerio;
I have a redux action like as follows and I want to loop over the data after redux action has completed in my statefull component.



export const fetchServiceTypes = () => {
return dispatch => {
dispatch(fetchStStart());
axios.get(GAMMA_CONSTANTS.LINK_SERVICETYPES)
.then(res => {
dispatch(fetchStSuccess(res.data))
})
})
.catch(err => {
dispatch(fetchStFail(err))
})
}
}


In the component, I call the redux action in the componentWillMount function like as follows but I think, because redux action works asynchronously, i couldn't loop over the redux state as soon as it finished



componentWillMount() {
if (this.props.serviceTypes.length === 0)
this.props.onFetchServiceTypes();

this.props.serviceType.forEach(x => {
// TO DO
})
}


Anybody how to solve that?
Thank you










share|improve this question



























    0















    I have a basic need about redux actions but I don't know how can i solve it.



    This is my scenerio;
    I have a redux action like as follows and I want to loop over the data after redux action has completed in my statefull component.



    export const fetchServiceTypes = () => {
    return dispatch => {
    dispatch(fetchStStart());
    axios.get(GAMMA_CONSTANTS.LINK_SERVICETYPES)
    .then(res => {
    dispatch(fetchStSuccess(res.data))
    })
    })
    .catch(err => {
    dispatch(fetchStFail(err))
    })
    }
    }


    In the component, I call the redux action in the componentWillMount function like as follows but I think, because redux action works asynchronously, i couldn't loop over the redux state as soon as it finished



    componentWillMount() {
    if (this.props.serviceTypes.length === 0)
    this.props.onFetchServiceTypes();

    this.props.serviceType.forEach(x => {
    // TO DO
    })
    }


    Anybody how to solve that?
    Thank you










    share|improve this question

























      0












      0








      0








      I have a basic need about redux actions but I don't know how can i solve it.



      This is my scenerio;
      I have a redux action like as follows and I want to loop over the data after redux action has completed in my statefull component.



      export const fetchServiceTypes = () => {
      return dispatch => {
      dispatch(fetchStStart());
      axios.get(GAMMA_CONSTANTS.LINK_SERVICETYPES)
      .then(res => {
      dispatch(fetchStSuccess(res.data))
      })
      })
      .catch(err => {
      dispatch(fetchStFail(err))
      })
      }
      }


      In the component, I call the redux action in the componentWillMount function like as follows but I think, because redux action works asynchronously, i couldn't loop over the redux state as soon as it finished



      componentWillMount() {
      if (this.props.serviceTypes.length === 0)
      this.props.onFetchServiceTypes();

      this.props.serviceType.forEach(x => {
      // TO DO
      })
      }


      Anybody how to solve that?
      Thank you










      share|improve this question














      I have a basic need about redux actions but I don't know how can i solve it.



      This is my scenerio;
      I have a redux action like as follows and I want to loop over the data after redux action has completed in my statefull component.



      export const fetchServiceTypes = () => {
      return dispatch => {
      dispatch(fetchStStart());
      axios.get(GAMMA_CONSTANTS.LINK_SERVICETYPES)
      .then(res => {
      dispatch(fetchStSuccess(res.data))
      })
      })
      .catch(err => {
      dispatch(fetchStFail(err))
      })
      }
      }


      In the component, I call the redux action in the componentWillMount function like as follows but I think, because redux action works asynchronously, i couldn't loop over the redux state as soon as it finished



      componentWillMount() {
      if (this.props.serviceTypes.length === 0)
      this.props.onFetchServiceTypes();

      this.props.serviceType.forEach(x => {
      // TO DO
      })
      }


      Anybody how to solve that?
      Thank you







      reactjs react-redux






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      asked Nov 16 '18 at 7:08









      Cansel MutiCansel Muti

      101213




      101213
























          1 Answer
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          componentDidMount is only triggered once before the component has rendered, and it doesn't care if your data is there or not. You could listen for a change in the state instead. This article explains how the new lifecycle method works.



          Side note: If you are only looking to show the data you can actually loop over it directly in the html and it will be updated whenever the state is updated.






          share|improve this answer























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            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            1














            componentDidMount is only triggered once before the component has rendered, and it doesn't care if your data is there or not. You could listen for a change in the state instead. This article explains how the new lifecycle method works.



            Side note: If you are only looking to show the data you can actually loop over it directly in the html and it will be updated whenever the state is updated.






            share|improve this answer




























              1














              componentDidMount is only triggered once before the component has rendered, and it doesn't care if your data is there or not. You could listen for a change in the state instead. This article explains how the new lifecycle method works.



              Side note: If you are only looking to show the data you can actually loop over it directly in the html and it will be updated whenever the state is updated.






              share|improve this answer


























                1












                1








                1







                componentDidMount is only triggered once before the component has rendered, and it doesn't care if your data is there or not. You could listen for a change in the state instead. This article explains how the new lifecycle method works.



                Side note: If you are only looking to show the data you can actually loop over it directly in the html and it will be updated whenever the state is updated.






                share|improve this answer













                componentDidMount is only triggered once before the component has rendered, and it doesn't care if your data is there or not. You could listen for a change in the state instead. This article explains how the new lifecycle method works.



                Side note: If you are only looking to show the data you can actually loop over it directly in the html and it will be updated whenever the state is updated.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 16 '18 at 8:18









                Kristoffer LundKristoffer Lund

                12919




                12919
































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