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schema_statements uses the column name by default to construct the index name, and then raises an exception if it doesn't exist, even if the name option is specified, which causes #8858. this commit makes index_name_for_remove fall back to constructing the index name to remove based on the name option.
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As of ccc6910c we use `mysqldump` to create the `structure.sql`.
The old `#structure_dump` code is still in AR but never used.
I removed all relevant parts from the code-base.
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Closes #9480.
We use `TableDefinition` for `#create_table` and `Table` for `#change_table`.
The PostgreSQL sepcifc types were only defined on `TableDefinition` so I
also added them to `Table`.
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As requested by @fxn
https://github.com/schuetzm/rails/commit/743d15bba182df80d003d205690ead988970299c#commitcomment-2661417
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Explain that it doesn't create indices by default and
that it also has a block form.
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When a table or a column is renamed related indexes kept their name. This will lead to confusing names. This patch renames related indexes when a column or a table is renamed. Only indexes with names generated by rails will be renamed. Indexes with custom names will not be renamed.
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Some adapter (SQLite3) need to perform renaming operations to support
the rails DDL. These rename prefixes operate with prefixes. When an
index name already uses up the full space provieded by
`index_name_length` these internal operations will fail. This patch
introduces `allowed_index_name_length` which respects the amount of
characters used for internal operations. It will always be <=
`index_name_length` and every adapter can define how many characters
need to be reserved.
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reversible.
[#8267]
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Pending work on graceful app upgrades.
Revert "Merge pull request #8439 from joshsusser/fixes"
This reverts commit ce8ac39338f86388e70356b3a470b3ea443802ae, reversing
changes made to b0e7b6f67c984d4b1502e801781ed75fad681633.
Revert "Merge pull request #8431 from joshsusser/schemadump"
This reverts commit 036d3e1c2b65c4b8cbd23de2e20ad67b9b756182, reversing
changes made to 0c692f4d121792117b6a71e5ed590a31c3b9d12e.
Revert "Merge branch 'joshsusser-master' into merge"
This reverts commit 0c692f4d121792117b6a71e5ed590a31c3b9d12e, reversing
changes made to 2e299fca715b083a60222a85e48f9d3b8dd8ce93.
Conflicts:
activerecord/CHANGELOG.md
activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
activerecord/test/cases/schema_dumper_test.rb
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LOCALTIMESTAMP is not support by sqlite3, and travis was giving us these
errors: https://travis-ci.org/rails/rails/jobs/3535241/#L570
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migrated_at: timestamp when migration run
fingerprint: md5 hash of migration source
name: filename without version or extension
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message
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This comment is not valid since that `if` is there to make possible to
do:
remove_index :users, :name
Instead of:
remove_index :users, column: :name
What is a valid use case.
[ci skip]
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This was there due historical reasons since
7dc45818dc43c163700efc9896a0f3feafa31138 to give the user the
possibility to create unique indexes passing "UNIQUE" as the third
argument
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Closes #8104
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It has been moved to active_record_deprecated_finders.
Use #to_a instead.
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For instance, running
rails g migration CreateMediaJoinTable artists musics:uniq
will create a migration with
create_join_table :artists, :musics do |t|
# t.index [:artist_id, :music_id]
t.index [:music_id, :artist_id], unique: true
end
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Examples:
add_reference :products, :supplier, polymorphic: true, index: true
remove_reference :products, :user
`add_belongs_to` and `remove_belongs_to` are
acceptable.
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Also fix failures in check options for nil
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Commit 3dbedd2 added NOT NULL constraints both to table
creation and modification. For creation the new default
makes sense, but the generic situation for changing a
table is that there exist records. Those records have
no creation or modification timestamps, and in the
general case you don't even know them, so when updating
a table these constraints are not going to work. See
a bug report for this use case in #3334.
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Options is needed for some Rails extensions to determine when
referential integrity should be disabled
This reverts commit bcb466c543451dce69403aaae047295758589d8e.
Fixes #5052
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The `add_index` method now supports a `where` option that receives a
string with the partial index criteria.
add_index(:accounts, :code, :where => "active")
Generates
CREATE INDEX index_accounts_on_code ON accounts(code) WHERE active
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