Storing Data

Data could be anything and we intedend Qreli as a thin layer that connects to the the data you already have, wherever it may be, and performing remote operations directly there via APIs.

However, for quick prototyping and small apps you can use Qreli itself for data storage.

Small Text Data

You may store up to 1MB of text data inside your app.

Assume you have an object called object : it could be string, number, or a JSON structure. You can read it, make changes to it, and save the changes.

Please refer to the image below where we read the data, we modify it, and then we store the changes:

We had previously saved an array called 'farmers'.

In the first step above, we set up an array called ${V.farmers}to read from storage. Since in our case it happens to be running inside an external loop, we clear the array then read from the app storage the data called 'farmers'and use it to instantiate the variable: ${E.Common}{getData( 'farmers' )}
In the second step, we add an item to the variable thus instantiated. More specifically, we add another item to the array.
In the third and last step, we saved the changes we made to the variable by storing in 'farmers' the value of our variable ${V.farmers}:
${E.Common}{storeData( 'farmers', '${V.farmers}' )}

Here are the operations you could perform with structured small text data:

List data: ${E.Common}{listData}
Get data: ${E.Common}{getData( 'data_name' )}
Store data: ${E.Common}{storeData( 'data_name' )}
Delete data: ${E.Common}{deleteData( 'data_name' )}

Files / Large Data

You may store up to 100MB of files data inside your app.

For example, let's get an image that was produced by AI and it has a termporary URL, and store it inside the app so the image will be always available:

Note that the variable name is an object, because we want to refer to its properties lates.

The instruction above reads the image at the provided url ${V.ai_image}{url}and stores it under the name ai_img.png.

Wheh this command executes, you will see in the debugger more information about it:

Later, we can retrieve this image and show it or do something with it by usign its publicURL property: ${V.save_img}{publicUrl}

Here are the operations you could perform with files:

List files: ${E.Common}{listFiles()}—> returns an array of file names
Get file: ${V.your_variable}{publicUrl}(if your_variable stored the data), or access the file:
https://s3.amazonaws.com/qreli.upload-data/client_data/<E.app.id>/<filename>
Store file: ${E.Common}{storeFile( '${V.your_variable}{url}', 'filename' )}
Delete file: ${E.Common}{deleteFile( 'filename' )}