migrations | SQL database migrations for Golang go-pg and PostgreSQL | Data Migration library
kandi X-RAY | migrations Summary
kandi X-RAY | migrations Summary
This package allows you to run migrations on your PostgreSQL database using Golang Postgres client. See example for details. You may also want to check go-pg-migrations before making a decision.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of migrations
migrations Key Features
migrations Examples and Code Snippets
Lines of Code : 33License : Permissive (MIT License)
Copydef run_migrations_online():
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""
# this callback is used to prevent an auto-migration from being gene def run_migrations_offline():
"""Run migrations in 'offline' mode.
This configures the context with just a URL
and not an Engine, though an Engine is acceptable
here as well. By skipping the Engine creation
we don't even need a Community Discussions
Trending Discussions on migrations
QUESTION
I built an app using Django 3.2.3., but when I try to settup my javascript code for the HTML, it doesn't work. I have read this post Django Static Files Development and follow the instructions, but it doesn't resolve my issue.
Also I couldn't find TEMPLATE_CONTEXT_PROCESSORS, according to this post no TEMPLATE_CONTEXT_PROCESSORS in django, from 1.7 Django and later, TEMPLATE_CONTEXT_PROCESSORS is the same as TEMPLATE to config django.core.context_processors.static but when I paste that code, turns in error saying django.core.context_processors.static doesn't exist.
I don't have idea why my javascript' script isn't working.
The configurations are the followings
Settings.py
...ANSWER
Answered 2021-Jun-15 at 18:56Run ‘python manage.py collectstatic’ and try again.
The way you handle static wrong, remove the static dirs in your INSTALLED_APPS out of STATIC_DIRS and set a STATIC_ROOT then collectstatic again.
Add the following as django documentation to your urls.py
QUESTION
So I created a poll model in my Django app. I'm going thorugh the polling app tutorial posted on the Django website, however, I'm using a remote MySQL database rather than a SQLite database.
...ANSWER
Answered 2021-Jun-15 at 20:06I'm thinking the suspect is an unsuccessful migration. Let's undo it and try again
QUESTION
First migration file:
ANSWER
Answered 2021-Jun-15 at 18:27change the posts migration post_id and author_id to this :
QUESTION
I'm trying to docerize my NodeJS API together with a MySQL image. Before the initial run, I want to run Sequelize migrations and seeds to have the tables up and ready to be served.
Here's my docker-compose.yaml:
ANSWER
Answered 2021-Jun-15 at 15:38I solved my issue by using Docker Compose Wait. Essentially, it adds a wait loop that samples the DB container, and only when it's up, runs migrations and seeds the DB.
My next problem was: those seeds ran every time the container was run - I solved that by instead running a script that runs the seeds, and touchs a semaphore file. If the file exists already, it skips the seeds.
QUESTION
i want to preload M2M relation with gorm and it is not populating the slice with Preload function.
ANSWER
Answered 2021-Jun-15 at 14:41There are a couple of things to try out and fix:
You probably don't need the many2many attribute to load the DonationDetail slice, since they can be loaded only with DonationID. If you have a foreign key, you can add it like this:
QUESTION
While developing a Django project, all your migrations are stored within each app folder, however, in production I don't want those migrations, I want to keep a Production database, and a Development database:
How do I handle Django migrations in a Production and Development environment?
I'm asking this question because it's been really hard to update my deployed project with new additions in the development one, my ideal scenario would be to keep each set of migrations in a folder outside my source code, just like the databases.
...ANSWER
Answered 2021-Jun-15 at 12:28The best idea is to keep production and development migrations the same and while developing you clean migrations before pushing the code and you should push migrations into your Version Control System too.
In development, you might end up deleting a table and re-creating it so make sure you don't push the un-intended migrations. The thing is you should treat migrations as code, not an automated script. I have done a lot of mistakes in the past, so, I came to the conclusion of including migrations in code. and that's effective and gives more control.
Moreover you might have to do data migrations in production, how will you do if you wont push the code?
QUESTION
I don't really know where the error is, for me, it's still a mystery. But I'm using Laravel 8 to produce a project, it was working perfectly and randomly started to return this error and all projects started to return this error too. I believe it's something with Redis, as I'm using it to store the system cache. When I go to access my endpoint in postman it returns the following error:
...ANSWER
Answered 2021-Jun-12 at 01:50Your problem is that you have set SESSION_CONNECTION=session, but your SESSION_DRIVER=default, so you have to use SESSION_DRIVER=database in your .env. See the config/session.php:
QUESTION
I've the databases db1 and db2. The schemas of both DBs should be created with the same migration script.
The Django docs mention DATABASE_ROUTERS and RunPython, but I didn't manage to get it working so far. The function is called, but migrations.CreateModel() has no impact when called from the function: the table is not created.
Migration script:
...ANSWER
Answered 2021-Jun-14 at 16:41migrations.CreateModel does not create a model in the database upon instantiation. It is supposed to be present in the operations list where the migrations system will then use it to create the model. Furthermore you shouldn't be writing this migration manually anyway! Just write the code for the model in models.py:
QUESTION
so I've got this model:
...ANSWER
Answered 2021-Jun-14 at 16:27You have to do this:
QUESTION
I'm having issues with understanding Fluent API when it comes to multiple entities owning one class.
Error:
...ANSWER
Answered 2021-Jun-14 at 15:07- Why do you need to derive from Entity? these are POCO classes.
- User and City have one-to-many relationship, right? then City needs to have list of Users.
- In one-to-many entities it is typical to have ID field in addition to object itself. So, City would have CountryId.
Probably, put your DbContext class as well. And "Entity is just a parent with an ID". Huh? and how this ID will be generated - in addition to CityID, CountryID, etc.? You are really asking for trouble
Advice. I usually create a database with all the tables and foreign keys - and then run scaffolding to get the baseline of objects. Simplifies a lot!
Then start with that model, and make the needed changes, if any. Based on your code, I am not even sure that you will need any changes!
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