I am using Doctrine ORM and I want to insert some rows when I update the current schema.
Which is the best way to achieve that?
You can use DoctrineFixturesBundle for load initial or test data
Fixtures are used to load a controlled set of data into a database.
Related
I want to update one property of each entity present in one particular kind of my datastore. In traditional sql, we do something like this as -
update <tablename> set <property> = <value>; {where clause is optional}
Now, how can I do same thing for datastore using golang code?
In Datastore you can't perform an update like that without retrieving the entities. You have to pull all entities in that kind, update the property on each, and re-upsert the now updated entities (preferably in a batch).
Go Datastore Queries: https://cloud.google.com/datastore/docs/concepts/queries#datastore-datastore-basic-query-go
Go Update Entities: https://cloud.google.com/datastore/docs/concepts/entities#datastore-datastore-update-go
Go Batch Upsert: https://cloud.google.com/datastore/docs/concepts/entities#datastore-datastore-batch-upsert-go
I'm working on a symfony application, and i need to insert multiple raws at once, Doctrine ORM is not a good option because for each raw it will open a connection to execute the query, to avoid this and have one connection inserting all the raws i used prepared statement of doctrine dbal and it works fine, except i need to get the ids of the inserted raws, it seems the only available function is lastinsertedid which returns only the last id not all the last inserted ones, how can i achieve this?
any help would be appreciated!
This is actually not related to doctrine at all. If you want all inserted id's it must be possible in MySQL. "It's unlikely that if doctrine don't have batch insert it will support returning list of ids after batch insert :)"
Check answers related to MYSQL:
How can I Insert many rows into a MySQL table and return the new IDs?
MySQL LAST_INSERT_ID() used with multiple records INSERT statement
But it's possible in postgresql (since you didn't mention you DB):
Retrieving serial id from batch inserted rows in postgresql
You can actually generate IDs before inserting content into database. For example, using random UUIDs.
This library might be of use: https://github.com/ramsey/uuid
use Ramsey\Uuid\Uuid;
$uuid4 = Uuid::uuid4();
echo $uuid4->toString()
I use Symfony2 and Doctrine ORM. I have table "articleType" where I keep all possible article types. I need insert several values to that table only once, when table is created. My question is how and where I should do that? Because I just can't insert that values in controller with every request to that controller right? Maybe I should write down manually that inserts in Doctrine migration class?
It depends, but most of the time Doctrine Migrations are the way to go. Each migration is supposed to be applied just once and that's exactly what you need.
Anybody know if it's possible to;
Dynamically create LINQ classes for tables/columns that change regularly?
If that creation can be used in DynamicData.
A web app we are developing creates tables and columns in SQL. We want to edit these tables in DynamicData.
Thoughts?
Depending on what type of Database you are running, but you could always have a linq statement that queries the systems schema table and have it return the tables and columns. Then could use what you return and then use another linq query to break out the information from each table.
I used sqlmetal.exe from the SDK, it's a winner.
Can someone help me answer these questions on EntityFramework?
Does it do anything special to the database? (like extra tables)
Can I add data directly with SQL without breaking EF?
Can I add tables and fields without breaking EF?
Yes you can access database with plain SQL when using EF.
No. EF just uses database. There is one exception in code first approach where EF can create one additional table for its own purpose called EdmMetadata.
Yes you can add data directly with SQL. If both your entity model and database are defined correctly it will not break EF.
Yes you can add new tables directly but EF will not know about them. You should not change existing tables because it can break EF.
You can do it with:
var context = new YourObjectContext();
var s = context.ExecuteStoreCommand("some query");
if your query create a table, this only create a table on db and not effected on EF