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Docs tweaks (thanks timgraham)

This commit is contained in:
Andrew Godwin 2013-08-10 20:00:12 +01:00
parent 3c3d308ea3
commit 7970d97a70
9 changed files with 38 additions and 31 deletions
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6
django/db/backends/mysql/introspection.py
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@ -1,6 +1,6 @@
import re
from .base import FIELD_TYPE
from django.utils.datastructures import SortedSet
from django.utils.datastructures import OrderedSet
from django.db.backends import BaseDatabaseIntrospection, FieldInfo
from django.utils.encoding import force_text
@ -142,7 +142,7 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
for constraint, column, ref_table, ref_column in cursor.fetchall():
if constraint not in constraints:
constraints[constraint] = {
'columns': SortedSet(),
'columns': OrderedSet(),
'primary_key': False,
'unique': False,
'index': False,
@ -170,7 +170,7 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
for table, non_unique, index, colseq, column in [x[:5] for x in cursor.fetchall()]:
if index not in constraints:
constraints[index] = {
'columns': SortedSet(),
'columns': OrderedSet(),
'primary_key': False,
'unique': False,
'index': True,

2
django/db/migrations/autodetector.py
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@ -29,7 +29,7 @@ class MigrationAutodetector(object):
"""
Returns a dict of migration plans which will achieve the
change from from_state to to_state. The dict has app labels
as kays and a list of migrations as values.
as keys and a list of migrations as values.
The resulting migrations aren't specially named, but the names
do matter for dependencies inside the set.

8
django/db/migrations/graph.py
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@ -1,4 +1,4 @@
from django.utils.datastructures import SortedSet
from django.utils.datastructures import OrderedSet
from django.db.migrations.state import ProjectState
@ -13,7 +13,7 @@ class MigrationGraph(object):
branch merges can be detected and resolved.
Migrations files can be marked as replacing another set of migrations -
this is to support the "squash" feature. The graph handler isn't resposible
this is to support the "squash" feature. The graph handler isn't responsible
for these; instead, the code to load them in here should examine the
migration files and if the replaced migrations are all either unapplied
or not present, it should ignore the replaced ones, load in just the
@ -109,8 +109,8 @@ class MigrationGraph(object):
for n in children:
results = _dfs(n, get_children, path) + results
path.pop()
# Use SortedSet to ensure only one instance of each result
results = list(SortedSet(results))
# Use OrderedSet to ensure only one instance of each result
results = list(OrderedSet(results))
# Populate DP cache
cache[(start, get_children)] = results
# Done!

2
django/utils/datastructures.py
View File

@ -237,7 +237,7 @@ class SortedDict(dict):
super(SortedDict, self).clear()
self.keyOrder = []
class SortedSet(object):
class OrderedSet(object):
"""
A set which keeps the ordering of the inserted items.
Currently backs onto OrderedDict.

14
docs/ref/django-admin.txt
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@ -575,20 +575,22 @@ makemigrations [<appname>]
.. django-admin:: makemigrations
.. versionadded:: 1.7
Creates new migrations based on the changes detected to your models.
Migrations, their relationship with apps and more are covered in depth in
:doc:`the migrations documentation</topics/migrations>`.
Providing one or more app names as arguments will limit the migrations created
to the app specified and any dependencies needed (the table at the other end
of a ForeignKey, for example)
to the app(s) specified and any dependencies needed (the table at the other end
of a ``ForeignKey``, for example).
.. django-admin-option:: --empty
The ``--empty`` option will cause ``makemigrations`` to output an empty
migration for the specified apps, for manual editing. This option is only
for advanced users and should not be used unless you are familiar with
the migration format, migration operations and the dependencies between
the migration format, migration operations, and the dependencies between
your migrations.
migrate [<appname> [<migrationname>]]
@ -596,11 +598,13 @@ migrate [<appname> [<migrationname>]]
.. django-admin:: migrate
Synchronises the database state with the current set of models and migrations.
.. versionadded:: 1.7
Synchronizes the database state with the current set of models and migrations.
Migrations, their relationship with apps and more are covered in depth in
:doc:`the migrations documentation</topics/migrations>`.
The behaviour of this command changes depending on the arguments provided:
The behavior of this command changes depending on the arguments provided:
* No arguments: All migrated apps have all of their migrations run,
and all unmigrated apps are synchronized with the database,

5
docs/ref/signals.txt
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@ -403,7 +403,6 @@ Arguments sent with this signal:
``db``
The alias of database on which a command will operate.
pre_syncdb
----------
@ -421,7 +420,6 @@ is present, for backwards-compatability this signal has an extra argument it sen
A list of the model classes from any app which :djadmin:`migrate` is
going to create, **only if the app has no migrations**.
post_migrate
------------
@ -479,7 +477,6 @@ For example, ``yourapp/management/__init__.py`` could be written like::
post_migrate.connect(my_callback, sender=yourapp.models)
post_syncdb
-----------
@ -497,8 +494,6 @@ is present, for backwards-compatability this signal has an extra argument it sen
A list of the model classes from any app which :djadmin:`migrate` has
created, **only if the app has no migrations**.
Request/response signals
========================

16
docs/releases/1.7.txt
View File

@ -33,9 +33,10 @@ What's new in Django 1.7
Schema migrations
~~~~~~~~~~~~~~~~~
Django now has built-in support for schema migrations, which allows models
to be updated, changed and deleted and the changes stored into migration files
and then run on any deployed database.
Django now has built-in support for schema migrations. It allows models
to be updated, changed, and deleted by creating migration files that represent
the model changes and which can be run on any development, staging or production
database.
Migrations are covered in :doc:`their own documentation</topics/migrations>`,
but a few of the key features are:
@ -60,7 +61,7 @@ but a few of the key features are:
New method on Field subclasses
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
To help power both schema migrations and composite keys, the Field API now
To help power both schema migrations and composite keys, the :class:`~django.db.models.Field` API now
has a new required method: ``deconstruct()``.
This method takes no arguments, and returns a tuple of four items:
@ -278,3 +279,10 @@ work until Django 1.9.
it will go through a regular deprecation path. This attribute was mostly used
by methods that bypassed ``ModelAdmin.get_fieldsets()`` but this was considered
a bug and has been addressed.
``syncdb``
~~~~~~~~~~
The ``syncdb`` command has been deprecated in favour of the new ``migrate``
command. ``migrate`` takes the same arguments as ``syncdb`` used to plus a few
more, so it's safe to just change the name you're calling and nothing else.

12
docs/topics/migrations.txt
View File

@ -49,7 +49,7 @@ The migration files for each app live in a "migrations" directory inside
of that app, and are designed to be committed to, and distributed as part
of, its codebase. You should be making them once on your development machine
and then running the same migrations on your colleagues' machines, your
staging machines and eventually your production machines.
staging machines, and eventually your production machines.
Migrations will run the same way every time and produce consistent results,
meaning that what you see in development and staging is exactly what will
@ -60,7 +60,7 @@ Backend Support
Migrations are supported on all backends that Django ships with, as well
as any third-party backends if they have programmed in support for schema
alteration (done via the SchemaEditor class).
alteration (done via the ``SchemaEditor`` class).
However, some databases are more capable than others when it comes to
schema migrations; some of the caveats are covered below.
@ -169,7 +169,7 @@ app - in the file, so it's possible to detect when there's two new migrations
for the same app that aren't ordered.
When this happens, Django will prompt you and give you some options. If it
thinks it's safe enough, it will offer to automatically linearise the two
thinks it's safe enough, it will offer to automatically linearize the two
migrations for you. If not, you'll have to go in and modify the migrations
yourself - don't worry, this isn't difficult, and is explained more in
:ref:`migration-files` below.
@ -184,8 +184,8 @@ you add a ForeignKey in your ``books`` app to your ``authors`` app - the
resulting migration will contain a dependency on a migration in ``authors``.
This means that when you run the migrations, the ``authors`` migration runs
first and creates the table the ForeignKey references, and then the migration
that makes the ForeignKey column runs afterwards and creates the constraint.
first and creates the table the ``ForeignKey`` references, and then the migration
that makes the ``ForeignKey`` column runs afterwards and creates the constraint.
If this didn't happen, the migration would try to create the ForeignKey column
without the table it's referencing existing and your database would
throw an error.
@ -271,7 +271,7 @@ Note that this only works given two things:
* You have not manually edited your database - Django won't be able to detect
that your database doesn't match your models, you'll just get errors when
migrations try and modify those tables.
migrations try to modify those tables.
.. historical-models: