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Questions & Help>Questions

Liveview with a form that includes several changesets

Hi :wave: I am trying to create a live view that shows a form. This form will allow you to create an snapshot per each product you own. ...

#forms

2 1143 5

2023-09-05 19:20:06 UTC

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Questions & Help>Questions

Ecto.Multi error handling

Hi :wave:, I want to insert user and company at once (user belongs to company, company can have many users) using Ecto.Multi. Here is my...

#ecto_multi

4 400 4

2024-03-28 23:39:09 UTC

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Questions & Help>Questions

Ecto.Changeset.optimistic_lock and Ecto.Multi

I’m trying to make sense of something and the fact that I don’t understand it might prove that I’m using it wrong. I’ve got various chan...

#ecto_multi

2 383 2

2024-02-04 18:45:20 UTC

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Select For Update in Elixir Transaction

I am trying to avoid deadlock between my Ecto Transaction operating on the same Table. To do that I am trying to replicate Postgres “Sele...

#ecto_multi

0 214 2

2024-04-25 11:52:02 UTC

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Combining postgresql and neo4j

I’m using a Neo4j database to supplement my Postgresql database. Postgres is used to store the entities themselves (e.g. users), and shou...

#ecto#neo4j#ecto_multi#postgres

35 8582 17

2020-10-14 12:41:59 UTC

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Questions & Help>Questions

Ecto.multi with insert and insert_all?

Is it possible to use an Ecto.Multi to do an insert and an insert_all where the insert_all needs the primary key resulting from the first...

#ecto#ecto_multi

15 7192 6

2022-06-01 09:08:18 UTC

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How to make Ecto.Multi link multiple inserts where subsequent inserts require the primary key of the first operation?

A fairly simple use-case: a user has one or more email addresses, stored in the database in 2 separate tables (users, emails) such that t...

#ecto#ecto_multi

32 6670 14

2021-01-21 12:19:48 UTC

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Ecto Multi in a Loop

I load a CSV into two separate tables in my database and it works great. Now that I have moved the database to the cloud, it’s time to u...

#ecto#ecto_multi

16 5730 7

2022-03-08 08:27:15 UTC

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Using result of intermediate insert in transaction with Ecto Multi

Using Ecto v2.2.6, Phoenix 1.3 I have a blog app. When a user makes a Post, it inserts into the Post table, then it get the resulting i...

#ecto#absinthe#ecto_multi

11 4249 7

2018-12-28 18:33:23 UTC

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Ecto.Query.update dynamic field name

I am working on a library that allows re-ordering rows of an Ecto schema based on an integer column. Right now, the column is hard-code...

#ecto#ecto_multi

10 3322 3

2018-05-07 20:37:51 UTC

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Multiple Ecto transactions give timeout

I’m in a situation where I have to insert 9000 registries in bulk into the database with Ecto in PostgreSQL. I already have a dedicated ...

#ecto#ecto_multi#transactions#timeout

8 3231 11

2021-12-14 23:46:13 UTC

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Ecto.Multi - Loop over list of changesets

Hello there, dear community! I have been dealing the last days with a function that save multiple records at once using Ecto.Multi. At t...

#ecto#ecto_multi

7 3054 6

2021-12-21 14:22:39 UTC

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Nesting Ecto.Multis

Hi all you lovely people I have a situation where I have to import a data set with multiple items where each has some other items assoc...

#ecto#ecto_multi

3 2752 1

2017-06-18 18:21:05 UTC

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Questions & Help>Questions

Ecto Multi.run

Hello! I had a question regarding the usage of Multi.run/3. I am using pg as my database. Let’s say I have a Multi with a couple differ...

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12 2897 5

2020-07-02 19:13:36 UTC

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Ecto Multi or Changeset - Business logic validation?

Context: In my application, projects make offers to users. I’ve just discovered Ecto.Multi and am really happy as it makes a lot of sens...

#ecto#changesets#ecto_multi

4 2396 4

2019-10-20 22:50:40 UTC

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Ecto.Multi without transaction

Hi all! All examples I've seen so far wrap Ecto.Multi in transaction to execute - is it possible to run it outside of transaction? That...

/phoenix#ecto#ecto_multi

3 2325 9

2017-08-02 20:50:44 UTC

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Questions & Help>Questions

Is `Repo.insert_or_update` safe for race condition?

I have already used upsert feature via Repo.insert/2 for a long time. Today, when I read other’s code, I found something like this: cas...

#ecto#ecto_multi

7 1845 5

2022-03-21 08:58:25 UTC

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Questions & Help>Questions

Enum.reduce refactor with multi

Hey there, I have this function: defp add_same_price(order, ids) do filtered_order_book = get_incomplete_orders(ids, order.comman...

#ecto_multi#reduce

6 1982 4

2019-05-20 08:38:30 UTC

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Questions & Help>Questions

How to handle pattern matching inside enumerators

I have a situation in my Phoenix web application where I’m performing multiple INSERT statements with ecto and I would like to roll back ...

#ecto_multi

5 1803 24

2022-12-28 12:21:37 UTC

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