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Is there any possibility to create app (django, laravel) - that would get data from database, table called orders and would automatically create pdf with data and download it?
Let's say, i've got 5 new orders, each for different address and different goods.
App should automatically create pdf and download for each of those 5 orders.
It could also be a react app getting orders from API.
Is this possible?
Thanks in advance.
I am recreating a web app in Django that was running in a server but it was terminated, fortunately, I did a backup of all the code. My problem comes with the database because but I do not know how to transfer all the data from the old db.sqlite3 Django database web app into the new one.
I found a similar question as mine Django: transfer data from one database to another but the user wanted to transfer data from specific columns because their models.pyfrom the old and new databases were slightly different. In my case, my models.py from the old and new databases are the same.
Alternatives
I am using the DB Browser for SQLite to explore the content of the old database and I could add manually each row into the Django administration but this will take me too much time.
I could copy the old db.sqlite and replace it in the new web app because the models.py file remains the same but this solution is not appropriate IMO, this solution is rude and I think it goes against the good practices of Software.
How should I proceed for transferring data from the old database to the new one?
This seems like a one time copy of one db to another. I don't see how this goes against good software practice unless you have to be copying this db frequently. I've done it before when migrating servers and it doesn't cause any issues assuming the two instances of the application are the same build.
I was able to do some minor tricks in order to solve my problem because there is not a straightforward functionality that allows you to transfer all your data from two sqlite databases in Django. Here is the trick I did:
Download the sqlite db browser to explore and export the contents of your old database in a .csv file. Open you database with sqlite db browser and hit on the tables option and you will see all your tables, then do a right click on any of those and hit the export as a csv file option to generate the csv file (name_of_your_csv_file.csv). The other alternative is to use the sqlite3.exe to open your database in cmd or powershell and then doing the export with:
.tables #this lets you explore your available tables
headers on
mode csv
output name_of_your_csv_file.csv
2.There are two choices up to this point: You can either insert all the records at once to your new database or you can drop your existing tables from the new database and then recreate them and import the .csv file. I went for the drop option because there were more than 100 records to migrate.
# sqlite3
# check the structure of your table so you can re-create it
.schema <table_name>
#the result might be something like CREATE TABLE IF NOT EXISTS "web_app_navigator_table" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "ticket" varchar(120) NOT NULL);
#drop the table
drop table web_app_navigator_table
#re-create the table
create table web_app_navigator_table(id integer not null primary key autoincrement, ticket varchar(120) not null);
#do the import of the csv file
.import C:/Users/a/PycharmProjects/apps/navigator/name_of_your_csv_file.csv table_name_goes_here
You might see an error such as csv:1: INSERT failed datatype mismatch but this indicates that the first row of your csv file was not inserted because it contains the headers of the exported data from your old database.
Is there a way to upload and import the Chinook DB into Oracles' APEX. I downloaded the db file from the chinook website (https://chinookdatabase.codeplex.com/) but having trouble finding how to upload it.
I think you got it wrong. Chinook documentation page suggests that - once you download the file and extract ZIP contents into some directory - you have to connect to SQL*Plus in order to perform installation.
It says that you should create a database user (which means that you have to have access to that database as a privileged user, such as SYS). Then you'd create objects and insert data into tables.
Therefore, Apex comes far, far in the future (regarding your current position). Besides, I'd say that it is YOU who should create an Apex application based on Chinook database; you won't get anything Apex-ish during Chinook installation.
I am using active-admin-axlsx gem for excel download in Rails 4 app using active-admin.
A user can filter the data he views on the screen.
For example, if I have 10 records for user ABC and 5 records for user XYZ, I want to see records only for XYZ, I have the filters setup using the filters provided by active admin.
What I now want is to download only these records that I have filtered, in the excel rather than all the 15 records of both ABC and XYZ.
As of now the default behaviour is the excel download contains all the records, irresepective of the filters.
Please suggest how can I achieve only filtered data download in the excel
Many Thanks!
I've recently changed the database server on my project from sqlite3 to Postgresql and I have a few questions that I hope will give an answer to my issues.
I understand that switching from sqlite to Postgres implies that I create the new database and the tables inside it, right? I've done that but I haven't seen any new files created in my project to show me that the database I've made is visible. (Btw, I've changed the database name in settings.py)
I probably should mention that I'm working in a virtual environment and I would like to know if that affects my references in any way. I've tried to import the tables in Django to try and count the number of records in a table but I get the error: "No module named psdemo". (psdemo is my database name and i'm trying to import the table with:
from ps.psdemo import Product
where ps is my application, psdemo is my database and Product the table in the database.
In conclusion I'm trying to get access to my database and tables but I can't manage to find them. I repeat, there is no new database file in my project or in my virtual environment (I've searched thoroughly) but if I use a terminal connection I can connect to my virtual environment and change directories to get to the application folder then if I connect to the Postgresql server I can create the database, the tables and can Insert into them, make queries etc, but I cannot access them from the Django code.
I understand that switching from sqlite to Postgres implies that I create the new database and the tables inside it, right? I've done that but I haven't seen any new files created in my project to show me that the database I've made is visible. (Btw, I've changed the database name in settings.py)
All you have to do with postgres is create the database. Not the tables. Django will create the tables, and anything else it thinks are useful, once you call syncdb.
You won't have any new files in your project like you did in sqlite. If you want to view your database, you should download and install pgadminIII (which I would recommend in any event)
I probably should mention that I'm working in a virtual environment and I would like to know if that affects my references in any way. I've tried to import the tables in Django to try and count the number of records in a table but I get the error: "No module named psdemo". (psdemo is my database name and i'm trying to import the table with:
Here, you import models via normal python syntax and it then references your tables. Each model should represent a single table. You define your models first, and then call
python manage.py syncdb
In conclusion I'm trying to get access to my database and tables but I can't manage to find them.
See above, but you should definitely read about postgres installation from the postgres docs, and read the psycopg2 docs as well as the Django docs for setting up a postgres database.
I understand that switching from sqlite to Postgres implies that I
create the new database and the tables inside it, right? I've done
that but I haven't seen any new files created in my project to show me
that the database I've made is visible. (Btw, I've changed the
database name in settings.py)
Database files are not created in the project directory with postgresql. They are created in the database server data directory (like /var/lib/postgres it depends on the distribution). You should generally query it through a PostgreSQL client that connects to the PostgreSQL server rather than messing with the files directly.
You can for example run command:
manage.py dbshell
As to your first issue, see #jpic's answer.
On your second issue, your database is not a package, and you do not import models from your database. If you were able to import your models correctly before you made any changes, change your import statements back to how they were.