| Commit message (Collapse) | Author | Age | Files | Lines |
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(same name).
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Follow up of #19171 and #26825.
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`foreign_key`, `json` and `virtual` are also available.
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This makes more sense, as the foreign key ignore pattern is only used by
the schema dumper.
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When dumping the database schema, Rails will dump foreign key names only
if those names were not generate by Rails. Currently this is determined
by checking if the foreign key name is `fk_rails_` followed by
a 10-character hash.
At [Cookpad](https://github.com/cookpad), we use
[Departure](https://github.com/departurerb/departure) (Percona's
pt-online-schema-change runner for ActiveRecord migrations) to run migrations.
Often, `pt-osc` will make a copy of a table in order to run a long migration
without blocking it. In this copy process, foreign keys are copied too,
but [their name is prefixed with an underscore to prevent name collision
](https://www.percona.com/doc/percona-toolkit/LATEST/pt-online-schema-change.html#cmdoption-pt-online-schema-change-alter-foreign-keys-method).
In the process described above, we often end up with a development
database that contains foreign keys which name starts with `_fk_rails_`.
That name does not match the ignore pattern, so next time Rails dumps
the database schema (eg. when running `rake db:migrate`), our
`db/schema.rb` file ends up containing those unwanted foreign key names.
This also produces an unwanted git diff that we'd prefer not to commit.
In this PR, I'd like to suggest a way to expose the foreign key name
ignore pattern to the Rails configuration, so that individual projects
can decide on a different pattern of foreign keys that will not get
their names dumped in `schema.rb`.
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Actually SQLite3 doesn't have JSON storage class (so it is stored as a
TEXT like Date and Time). But emulating JSON types is convinient for
making database agnostic migrations.
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Add validate_constraint and update naming
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Add support for specifying non-default operator classes in PostgreSQL
indexes. An example CREATE INDEX query that becomes possible is:
CREATE INDEX users_name ON users USING gist (name gist_trgm_ops);
Previously it was possible to specify the `gist` index but not the
custom operator class. The `add_index` call for the above query is:
add_index :users, :name, using: :gist, opclasses: {name: :gist_trgm_ops}
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Currently the normalization only exists in `primary_key` shorthand. It
should be moved to `new_column_definition` to also affect to
`add_column` with primary key.
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type columns
Fixes #30496.
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This reverts commit 3420a14590c0e6915d8b6c242887f74adb4120f9, reversing
changes made to afb66a5a598ce4ac74ad84b125a5abf046dcf5aa.
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This is a regression due to #28282.
Fixes #29136.
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Since 1a92ae83 all `indexes` methods are under the `SchemaStatements`.
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* Use keyword arguments in `IndexDefinition` to ease to ignore unused
options and to avoid to initialize incorrect empty value.
* Place it in `SchemaStatements` for consistency.
* And tiny tweaks.
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Sharing `options` causes some unexpected behavior. If `limit: 2` is
specified, this means that 2 bytes integer for a reference id column and
2 chars string for a reference type column. Another example, if
`unsigned: true` is specified, this means that unsigned integer for a
reference id column, but a invalid option for a reference type column.
So `options` should not be shared with a reference type column.
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Column options are passed as an hash args then used as `options` hash in
`add_column_options!`. Converting args to attributes is inconvinient for
using options as an hash.
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Follow up to #26266.
The default type of `primary_key` and `references` were changed to
`bigint` since #26266. But legacy migration and sqlite3 adapter should
keep its previous behavior.
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MySQL generated columns: https://dev.mysql.com/doc/refman/5.7/en/create-table-generated-columns.html
MariaDB virtual columns: https://mariadb.com/kb/en/mariadb/virtual-computed-columns/
Declare virtual columns with `t.virtual name, type: …, as: "expression"`.
Pass `stored: true` to persist the generated value (false by default).
Example:
create_table :generated_columns do |t|
t.string :name
t.virtual :upper_name, type: :string, as: "UPPER(name)"
t.virtual :name_length, type: :integer, as: "LENGTH(name)", stored: true
t.index :name_length # May be indexed, too!
end
Closes #22589
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because Struct.new returns a Class, we just can give it a name and use it directly without inheriting from it
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This commit fixes the generated HTML of the two code examples.
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invalid column type
/activerecord/lib/active_record/connection_adapters
/abstract/schema_definitions.rb:306
type = type.to_sym
Changed to the following to handle nil case:
type = type.to_sym if type
Added regression test for this case:
/activerecord/test/cases/migration_test.rb:554
if current_adapter?(:SQLite3Adapter)
def test_allows_sqlite3_rollback_on_invalid_column_type
Person.connection.create_table :something, force: true do |t|
t.column :number, :integer
t.column :name, :string
t.column :foo, :bar
end
assert Person.connection.column_exists?(:something, :foo)
assert_nothing_raised { Person.connection.remove_column :something, :foo, :bar }
assert !Person.connection.column_exists?(:something, :foo)
assert Person.connection.column_exists?(:something, :name)
assert Person.connection.column_exists?(:something, :number)
ensure
Person.connection.drop_table :something, if_exists: true
end
end
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Avoid to allow unused splat args for `t.timestamps` in `create_table`
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Unfortunately `t.timestamps` in `create_table` allows unused splat args.
But the same one in `change_table` does not allow them.
This commit fixes the inconsistent behavior.
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Support multiple indexes on the same column when loading the schema
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The current code base is not uniform. After some discussion,
we have chosen to go with double quotes by default.
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Currently CI is broken due to 56a61e0 and c4cb686. This occurred because
the failures are not present on SQLite which is what I normally run
locally before pushing.
The optimizations to our YAML size were dropping mutations, as
`with_type` didn't set the previous value if it'd already been read
(that method was never really designed to be used with values on
individual objects, it was previously only used for defaults). I'm
questioning whether there's a better place to be handling the exclusion
of the type, but this will fix the failing build.
Additionally, there was a bug in `remove_foreign_key` if you passed it
an options hash containing `to_table`. This now occurs whenever removing
a reference, as we always normalize to a hash.
[Sean Griffin & Ryuta Kamizono]
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* Switch to keyword args where we can without breaking compat.
* Use add_table_options! for :options, too.
* Some code polish.
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Comments are specified in migrations, stored in database itself (in its schema),
and dumped into db/schema.rb file.
This allows to generate good documentation and explain columns and tables' purpose
to everyone from new developers to database administrators.
For PostgreSQL and MySQL only. SQLite does not support comments at the moment.
See docs for PostgreSQL: http://www.postgresql.org/docs/current/static/sql-comment.html
See docs for MySQL: http://dev.mysql.com/doc/refman/5.7/en/create-table.html
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Previously if you used `t.foreign_key` twice within the same
`create_table` block using the same `to_table`, all statements except
the final one would fail silently. For example, the following code:
def change
create_table :flights do |t|
t.integer :from_id, index: true, null: false
t.integer :to_id, index: true, null: false
t.foreign_key :airports, column: :from_id
t.foreign_key :airports, column: :to_id
end
end
Would only create one foreign key, on the column `from_id`.
This commit allows multiple foreign keys to the same table to be created
within one `create_table` block.
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With this addition, you can add a column into the table like:
```
create_table(:numeric_types) do |t|
t.numeric :foo, precision: 10, scale: 2, default: 2.0
end
```
The result of the migration above is same with:
```
create_table(:numeric_types) do |t|
t.decimal :foo, precision: 10, scale: 2, default: 2.0
end
```
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- Using `references` or `belongs_to` in migrations will always add index
for the referenced column by default, without adding `index:true` option
to generated migration file.
- Users can opt out of this by passing `index: false`.
- Legacy migrations won't be affected by this change. They will continue
to run as they were before.
- Fixes #18146
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Even though this means more things to change when we bump after a
release, it's more important that our examples are directly copyable.
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If we use a real version, at best that'll be an onerous update required
for each release; at worst, it will encourage users to write new
migrations against an older version than they're using.
The other option would be to leave these bare, without any version
specifier. But as that's just a variant spelling of "4.2", it would seem
to raise the same concerns as above.
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The `native_database_types` only used in `TableDefinition` for look up
the default `:limit` option. But this is duplicated process with
`type_to_sql`. Passing `native_database_types` is not needed.
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Columns are no longer stored in an attribute since b8a533d.
[ci skip]
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The getter is doing nothing more than returning the ivar, so it can be
extracted to an attr_reader.
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[ci skip]
It's been a source of confusion that the lower-level `add_column`
referenced the higher level `column` method for available options.
`column` supports additional functionality like `index: true` that is
not present on `add_column`.
This patch moves common option documentation to `add_column` and only
documents the additional options in `column`.
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The focus of this change is to make the API more accessible.
References to method and classes should be linked to make it easy to
navigate around.
This patch makes exzessiv use of `rdoc-ref:` to provide more readable
docs. This makes it possible to document `ActiveRecord::Base#save` even
though the method is within a separate module
`ActiveRecord::Persistence`. The goal here is to bring the API closer to
the actual code that you would write.
This commit only deals with Active Record. The other gems will be
updated accordingly but in different commits. The pass through Active
Record is not completely finished yet. A follow up commit will change
the spots I haven't yet had the time to update.
/cc @fxn
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Closes #21563.
The `name` argument of `add_references` was both used to generate the
column name `<name>_id` and as the target table for the foreign key
`name.pluralize`.
It's primary purpose is to define the column name. In cases where the
`to_table` of the foreign key is different than the column name we
should be able to specify it individually.
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