Retrofitting Redux

While learning Redux, I decided to retrofit my latest project with Redux. It’s probably best to add it in from the start, but I thought this would help solidify my understanding anyway.

First off I installed react-redux, redux and redux-thunk into my current frontend folder.

Then I set up a rootReducer function and added the store to my index.js file making sure to use compose to include both thunk and the redux developer tools.

I figured I’d start with just one reducer and add from there. The main data for this app is the headlines data. It’s provided by a fetch to the api backend, so would require use of thunk. The headlines are currently only held in the HeadlinesContainer component; however, moving the data to the store will help with searching from the sidebar, which is why I decided to start with them.

I created a file reducers/index.js to combine all future reducers and added in one initial reducer to handle the headlines.

Then I created the applicable reducer making sure to access the correct data items and adding them to the store.

I added in the applicable actions.

Then updated the HeadlinesContainer to be connected to the store, passing in both the mapStateToProps and mapDispatchToProps functions.

Finally, I updated all references from this.state.headlines to this.props.headlines and changed the componentDidMount to run the fetchHeadlines function to update the store.

Success. The page again loads as it did before redux and thunk were added with the top headlines being updated to and displayed from the store.

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