Rename the new Get file content step to "Get. This helps distinguish this file from the Excel template. Make the new. Use the following values. Run the script to copy data into the new workbook. Add the Excel Online Business connector with the Run script action.
Use the following values for the action. Save the flow. Use the Test button on the flow editor page or run the flow through your My flows tab. Be sure to allow access when prompted. You should find new. The new workbooks contain the same data as the CSV files.
The script expects the comma-separated values to make a rectangular range. If your. This script adds the data one row at a time, instead of as a single range. This script is less efficient and is noticeably slower with large data sets. The removeData method is used to remove any existing menu items from the database.
I want to ensure the database is empty before populating the data extracted from the menudata. The implementation of the method is very straightforward if you have a basic understanding of Core Data. We first execute a query to retrieve all the menu items from the database and call the deleteObject method to delete the item one by one.
After calling the removeData method, we execute the parseCSV method to parse the menudata. With the returned items, we insert them one by one by calling the NSEntityDescription. Hit the Run button to launch the app.
But there is an issue with the current implementation. Every time you launch the app, it preloads the data from the CSV file. Apparently, you only want to perform the preloading once. Change the application:didFinishLaunchingWithOptions: method to the following:. To indicate that the app has preloaded the data, we save a setting to the defaults system using a specific key i. So far the CSV file is bundled in the app. If your data is static, it is completely fine.
In this case, whenever there is a new update for the data file, you will have to rebuild the app and redeploy it to the app store. Instead of embedding the data file in the app, you put it in an external source. For example, you can store it on a cloud server.
Every time when a user opens the app, it goes up to the server and download the data file. Then the app parses the file and loads the data into the database as usual. I have uploaded the sample data file to the Amazon cloud server. You can access it through the URL below:. This is just for demo purpose. If you have your own server, feel free to upload the file to the server and use your own URL. To load the data file from the remote server, all you need to do is make a little tweak to the code.
First, update the preloadData method to the following:. The code is very similar to the original one. The parseCSV method will handle the file download and perform the data parsing accordingly. Before running the app, you have to update the application:didFinishLaunchingWithOptions: method so that the app will load the data every time it runs:.
Hit the Run button and test the app again. The menu items should be different from those shown previously. For your reference, you can download the complete Xcode project here. Now that you should know how to populate a database with external data, you may wonder if you can use an existing SQLite database directly.
In some situations, you probably do not want to preload the data during app launch. For example, you need to preload hundreds of thousands of records. This will take some time to load the data and results a poor user experience.
Apparently, you want to pre-filled the database beforehand and bundle it directly in the app. Before I show you the procedures, please download the starter project again. As a demo, we will copy the existing database created in the previous section to this starter project. Now open up the Xcode project that you have worked on earlier. We will now copy it to the starter project that you have just downloaded. The database is not bundled in the Xcode project but automatically created when you run the app in the simulator.
To locate the database, you will need to add a line of code to reveal the file path. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 9 years, 7 months ago. Active 4 years, 5 months ago. Viewed 7k times. Could you please help me for reading this csv file? Improve this question. Could u please tell me, how can i read this file content as a string?
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