Re: Request for help: building a docker/vagrant platform for running Django's test suite

[Tommy Beadle]

I have a decent amount of Docker experience.  Doing something like this
definitely sounds like a reasonable thing to do with Docker.  I'd be
willing to help out.

On Tue, Apr 21, 2015 at 1:25 PM, Tim Graham  wrote:

> Hi John,
>
> Kevin and I are going to chat about it tonight. I'll keep this thread
> updated with ours plans and progress.
>
> Tim
>
> On Tuesday, April 21, 2015 at 1:00:46 PM UTC-4, John Giannelos wrote:
>>
>> Hey all,
>>
>> I would also be interested to contribute to this effort.
>> Is there a ticket/github issue to track it?
>>
>> Best,
>> John
>>
>> On Sun, Apr 19, 2015 at 11:18 AM, Kevin Glavin 
>> wrote:
>>
>>> Hi Tim,
>>>
>>> I have been using Docker, Vagrant, and Jenkins for a while now
>>> independently. Would love to help out with this effort.
>>>
>>> Feel free to reach out to me privately if you'd like to continue the
>>> discussion.
>>>
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-- 
Grace and Peace,
Tommy B.

I want to live like I know what I'm leaving.
--Switchfoot, "Awakening"

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Re: Unneeded index created with unique=True and db_index=False in TextField

[Tommy Beadle]

I believe that Postgres will *always* create an index on a column with a
UNIQUE constraint.

regression=> create table yo (id serial primary key, blah varchar(32)
unique);
CREATE TABLE
regression=> \d yo
Table "public.yo"
 Column | Type  |
Modifiers
+---+-
 id | integer   | not null default
nextval('yo_id_seq'::regclass)
 blah   | character varying(32) |
Indexes:
"yo_pkey" PRIMARY KEY, btree (id)
"yo_blah_key" UNIQUE CONSTRAINT, btree (blah)

regression=> drop index yo_blah_key;
ERROR:  cannot drop index yo_blah_key because constraint yo_blah_key on
table yo requires it
HINT:  You can drop constraint yo_blah_key on table yo instead.


On Tue, Apr 14, 2015 at 9:01 PM, Some Developer 
wrote:

> Using Django 1.8, psycopg2 2.6 and PostgreSQL 9.4.1.
>
> I have a model with a models.TextField(unique=True, db_index=False,
> primary_key=False) field in it.
>
> I understand that an index is created because of the comment shown in this
> code:
>
> https://github.com/django/django/blob/master/django/db/
> backends/postgresql_psycopg2/schema.py#L17
>
> but even though the index is suggested for LIKE queries using non C
> locales I would have thought the addition of db_index=False would have
> negated that.
>
> I feel that this is a bug. An index is not required by PostgreSQL on a
> unique constraint (it may be recommended but that is beside the point) and
> if I explicitly state db_index=False then the Django ORM should remove the
> index even though the index is recommended.
>
> Thoughts?
>
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-- 
Grace and Peace,
Tommy B.

I want to live like I know what I'm leaving.
--Switchfoot, "Awakening"

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