Is it possible to get a data source URL of Google Spreadsheets for appengine datastore entities? I want to use the google visualization query objects to query my datastore. Or how I an expose my datastore with a datasource URL.
And for a Google visualization based project which one is better between Google Spreadsheet and GAE big table. Since Google Spreadsheet has very good query options and a nice harmonics with google visualization. One can get a direct DataTable from a data source URL. To do the same thing needs a good amount of task with GAE big table. Please share your experience in this area.
There's nothing built in to do this. You'll need to write your own code that returns your data in a format GViz supports.
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I am deploying a Plotly Dash app on Google App Engine but meet some difficulties. The data source to be queried in the dashboard is a Bigquery table, whose content is changing. I hope that the data in the App can always be the latest.
What I tried is at the beginning of the main.py code, I read in the table from Bigquery by Bigquery Python API, but after the App being deployed onto GAE, I found the data was fixed; even I deleted the Bigquery table, the App was not affected. May I know what is the correct way to get data from BigQuery to App Engine? Thanks.
How to connect to BigQuery from GAE using Python might be a bit more of a task than a single question can answer, but here are some hints:
Everything Google Cloud can (in my opinion) be best understood through the repositories on Github. For instance, the python docs samples contain several examples, out of which I think the client example is probably the easiest and most basic. Bigquery Python Samples are here. That will basically answer your question, except for a few gotchas I will mention.
You will of course need to download the client library to do development on a local environment. That is straightforward, but if something seems not to be working make sure you have enabled the API service account for your project--that can be a little confusing.
Something that is critically important to remember is that your GAE app will not be able to easily communicate with BigQuery if it is in a different region, and, in fact, once you set up a GAE app you cannot move or delete it! So, do pay attention to what you are doing as you set up, and if you have a locations mismatch you will need to migrate your BQ instance to the matching location.
Say I have an App and I want to use Google sheet as my backend database.
Can I let the different users use their own Google sheets by logging in their own Google account?
I read some articles about using Google sheet as a backend database, but almost all of them are about creating the Google sheet with your own Google account.
I know Google Drive can let you save user-specific data to user's own space. I am not sure if Google Sheets can do a similar thing.
that's a very abstract question, but yes (it depends). after that, all you need to do is collect all the data into a master spreadsheet with IMPORTRANGE formulas:
=IMPORTRANGE("URL-or-ID", "Sheet1!A1:Z")
I'm quite new to Google App Engine and it's cloud Datastore which is used for storing the backend's data by default. As far as I realized you can only view it's content within the developer console and you can create or edit entities there.
But is there any external tool from which you can connect to your datastore to create reports or administer the data? What is your experience?
In fact yes it's true you can only see data's from the admin console.
If you wish to see your data's in Google Drive Table and make a report you can, but for that you need to create a connector to your sheet (I already made one). It's exactly the same if you need update or import data's to your datastore.
I use this Technic to upload or refresh products on my e-shop GAE app.
In general if I need to see a report, I design a specific web page for that and I protect theme via a login / password. To see a well formatted report you can use jquery library or use Google Charts
in Google App Engine,after using the makePersistent() to store the data in the datastore,i know how to get the data content by the key using getObjectById().
but now i wanna to get the data in the datastore by url. i think the url is created .
so the question is how the url can be created to get the data in the datastore
There is no built-in means to access the datastore through URLs. If you choose to, your application can implement URLs that return data from the datastore.
I invite you to take a look at titan-files. It's a powerful file-system abstraction on top of the DataStore and/or blob store. I'm using it for a commercial application and so far I've been very happy with it.
I am just getting started with Google Web Toolkit and Google App Engine and have a quick question. I think I understand how to use the datastore now but I was wondering if there is a way that I can quickly create a "database" with static data from an excel sheet? I just need to add some data for a proof of concept later this week.
I am picturing something similar to a SQL database browser where I can just import the data?
I developing in Eclipse with appropriate plugins.
Thanks,
Rob
The easiest way to do this would be to save your spreadsheet as a CSV file, then use the bulkloader to load it into the datastore.
Your best bet is probably to write something to handle uploading it, or to handle processing it on the server.
However, you should also look at the bulk loader. It might be able to save you a little bit of time.
Here is the API (Google Documents List API) that "allows client applications to programmatically access and manipulate user data stored with Google Documents".