javascript - React does not recognize my function -


i developing application in reactjs, utilizing redux architecture. application using third-party api gets called when submit city search bar. in testing it, console error reads:

uncaught typeerror: this.props.fetchweather not function

i unclear why react tells me fetchweather not function when exists function here on src/actions/index.js:

import axios 'axios';  const api_key = 'spj3q-9huq]-hq -9hq 0rgjeth9e'; const root_url = `http://api.openweathermap.org/data/2.5/forecast?appid=${api_key}`;  export const fetch_weather = 'fetch_weather';  export function fetchweather(city) {   const url = `${root_url}&q=${city},us`;   const request = axios.get(url);    return {     type: fetch_weather,     // optional property     // promise passed in     payload: request   }; }

this.props.fetchweather(this.state.term); need fetch weather data , line of code exists in container/search_bar.js:

import react, {component} 'react'; import {connect} 'react-redux'; import {bindactioncreators} 'redux'; import {fetchweather} '../actions/index';  export default class searchbar extends component {   constructor(props) {     super(props);      this.state = {term: ''};      this.oninputchange = this.oninputchange.bind(this);     // need bind     this.onformsubmit = this.onformsubmit.bind(this);   }    oninputchange(event) {     this.setstate({term: event.target.value});   }   // callback   onformsubmit(event) {     event.preventdefault();      // need go fetch weather data     this.props.fetchweather(this.state.term);     // clear out search input     this.setstate({term:''});   }    render() {     return (       <form onsubmit={this.onformsubmit} classname="input-group">         <input           placeholder="get 5 day forecast in favorite cities"           classname="form-control"           value={this.state.term}           onchange={this.oninputchange}         />         <span classname="input-group-btn">           <button type="submit" classname="btn btn-secondary">submit</button>         </span>       </form>     )   } }  function mapdispatchtoprops(dispatch) {   // makes sure flows down middleware   return bindactioncreators({fetchweather}, dispatch); }  connect(null, mapdispatchtoprops)(searchbar);

you need export redux component, not react component

export default connect(null, mapdispatchtoprops)(searchbar);


Comments

Post a Comment

Popular posts from this blog

Is there a better way to structure post methods in Class Based Views -

i'm using class based views in django , never specify url in ajax calls , omit action parameter in form because know these requests go through post method of class based view. notice view - profile page make many requests depending on user updating on page - post method become convoluted , if/else mess example: def post(self, request, *args, **kwargs): # handle user changing available date if request.post.get('availabledate') != none: self.updateavailabledate(request) return jsonresponse({'result':'success'}) if request.post.get('newprojectname') != none: creative_user = creativeuserprofile.objects.get(id = request.user.id) project = project.create_project(creative_user, request.post['newprojectname']) project.save() return jsonresponse({'projectid': project.id }) if request.post.get('projectimage') != none , request.files['file']: proj...
Read more

performance - Why is XCHG reg, reg a 3 micro-op instruction on modern Intel architectures? -

i'm doing micro-optimization on performance critical part of code , came across sequence of instructions (in at&t syntax): add %rax, %rbx mov %rdx, %rax mov %rbx, %rdx i thought had use case xchg allow me shave instruction , write: add %rbx, %rax xchg %rax, %rdx however, dimay found agner fog's instruction tables , xchg 3 micro-op instruction 2 cycle latency on sandy bridge, ivy bridge, broadwell, haswell , skylake. 3 whole micro-ops , 2 cycles of latency! 3 micro-ops throws off 4-1-1-1 cadence , 2 cycle latency makes worse original in best case since last 2 instructions in original might execute in parallel. now... cpu might breaking instruction micro-ops equivalent to: mov %rax, %tmp mov %rdx, %rax mov %tmp, %rdx where tmp anonymous internal register , suppose last 2 micro-ops run in parallel latency 2 cycles. given register renaming occurs on these micro-architectures, though, doesn't make sense me done way. why wouldn't register renamer ...
Read more

c# - Asp.net web api : redirect unauthorized requst to forbidden page -

im trying redirect unauthorized request forbidden page instead i'm getting forbidden page in response body , how can fix ? here's startup class : app.createperowincontext(storecontext.create); app.createperowincontext<applicationusermanager>(applicationusermanager.create); app.createperowincontext<applicationsigninmanager>(applicationsigninmanager.create); app.usecookieauthentication(new cookieauthenticationoptions { authenticationtype = defaultauthenticationtypes.applicationcookie, expiretimespan = timespan.fromdays(30), }); app.useexternalsignincookie(defaultauthenticationtypes.externalcookie); app.usetwofactorsignincookie(defaultauthenticationtypes.twofactorcookie, timespan.fromminutes(5)); app.usetwofactorrememberbrowsercookie(defaultauthenticationtypes.twofactorrememberbrowsercookie); the method im trying reach : [httpget] [authorize(roles = "admin")] public string getcurrentusername() { return userman...
Read more