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This reverts commit 637a7d9d357a0f3f725b0548282ca8c5e7d4af4a, reversing
changes made to 5937bd02dee112646469848d7fe8a8bfcef5b4c1.
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Replace deprecated find_by_* with find_by
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Suggested by @dhh.
It doesn't affect the generated SQL, so seems reasonable to continue to
allow it as an association option.
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Fixes #8795
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Correct source for in_clause_length for eager loading (Fix for #8474)
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(fixes #8474)
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They don't add any benefits over `assert object.blank?`
and `assert object.present?`
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This commit fixes a bug introduced in 96a13fc7 which breaks behaviour of
integer fields.
In 3.2.8, setting the value of an integer field to a non-integer (eg.
Array, Hash, etc.) would default to 1 (true) :
# 3.2.8
p = Post.new
p.category_id = [ 1, 2 ]
p.category_id # => 1
p.category_id = { 3 => 4 }
p.category_id # => 1
In 3.2.9 and above, this will raise a NoMethodError :
# 3.2.9
p = Post.new
p.category_id = [ 1, 2 ]
NoMethodError: undefined method `to_i' for [1, 2]:Array
Whilst at first blush this appear to be sensible, it combines in bad
ways with scoping.
For example, it is common to use scopes to control access to data :
@collection = Posts.where(:category_id => [ 1, 2 ])
@new_post = @collection.new
In 3.2.8, this would work as expected, creating a new Post object
(albeit with @new_post.category_id = 1). However, in 3.2.9 this will
cause the NoMethodError to be raised as above.
It is difficult to avoid triggering this error without descoping before
calling .new, breaking any apps running on 3.2.8 that rely on this
behaviour.
This patch deviates from 3.2.8 in that it does not retain the somewhat
spurious behaviour of setting the attribute to 1. Instead, it explicitly
sets these invalid values to nil :
p = Post.new
p.category_id = [ 1, 2 ]
p.category_id # => nil
This also fixes the situation where a scope using an array will
"pollute" any newly instantiated records.
@new_post = @collection.new
@new_post.category_id # => nil
Finally, 3.2.8 exhibited a behaviour where setting an object to an
integer field caused it to be coerced to "1". This has not been
retained, as it is spurious and surprising in the same way that setting
Arrays and Heshes was :
c = Category.find(6)
p = Post.new
# 3.2.8
p.category_id = c
p.category_id # => 1
# This patch
p.category_id = c
p.category_id # => nil
This commit includes explicit test cases that expose the original issue
with calling new on a scope that uses an Array. As this is a common
situation, an explicit test case is the best way to prevent regressions
in the future.
It also updates and separates existing tests to be explicit about the
situation that is being tested (eg. AR objects vs. other objects vs.
non-integers)
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This commit fixes reported issue #7630 in which counter
caches were not being updated properly when replacing
has_many_through relationships
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This test does not belong to has many associations test.
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Consider this scenario:
if params[:foo]
conditions = { foo: true }
end
foos = Foo.where(conditions).order(:id)
When params[:foo] is nil, this would call:
foos = Foo.where(nil).order(:id)
In this scenario, we want Foo.where(conditions) to be the same as calling
Foo.all, otherwise we'd get a "NoMethodError order for WhereChain".
Related to #8332.
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Relation.where with no args can be chained with not, like, and not_like
Conflicts:
activerecord/CHANGELOG.md
activerecord/lib/active_record/relation/query_methods.rb
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examples:
Model.where.not field: nil
#=> "SELECT * FROM models WHERE field IS NOT NULL
Model.where.like name: 'Jeremy%'
#=> "SELECT * FROM models WHERE name LIKE 'Jeremy%'
this feature was originally suggested by Jeremy Kemper https://github.com/rails/rails/pull/5950#issuecomment-5591330
Closes #5950
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Closes #3313
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Allows you to do BaseClass.new(:type => "SubClass") as well as
parent.children.build(:type => "SubClass") or parent.build_child
to initialize an STI subclass. Ensures that the class name is a
valid class and that it is in the ancestors of the super class
that the association is expecting.
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prevent mass assignment of polymorphic type when using `build`
Conflicts:
activerecord/CHANGELOG.md
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Closes #8265
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To perform a sum calculation over the array of elements, use to_a.sum(&block).
Please check the discussion in f9cb645dfcb5cc89f59d2f8b58a019486c828c73
for more context.
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See issue #7950.
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:counter_cache option for to support custom named counter caches
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So that the scope may be a NullRelation and return a result without
executing a query.
Fixes #7928
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Fixes #8102.
I couldn't find a nicer way to deal with this than delegate the call to
#scope, which will be a NullRelation when we want it to be.
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null relations
For example, the following should not run any query on the database:
Post.new.comments.where(body: 'omg').to_a # => []
Fixes #5215.
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When calling first(n) or last(n) in a collection, Active Record was
improperly trying to set the inverse of instance in case that option
existed. This change was introduced by
fdf4eae506fa9895e831f569bed3c4aa6a999a22.
In such cases we don't need to do that "manually", since the way
collection will be loaded will already handle that, so we just skip
setting the inverse association when any argument is given to
first(n)/last(n).
The test included ensures that these scenarios will have the inverse of
instance set properly.
Fixes #8087, Closes #8094.
Squashed cherry-pick from d37d40b and c368b66.
Conflicts:
activerecord/CHANGELOG.md
activerecord/lib/active_record/associations/collection_association.rb
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remove duplicated require statements in AR test cases
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If you create a new record via a collection association proxy that has
not loaded its target, and which selects additional attributes through
the association, then when the proxy loads its target, it will
inadvertently trigger an ActiveModel::MissingAttributeError during
attribute writing when CollectionAssociation#merge_target_lists attempts
to do its thing, since the newly loaded records will possess attributes
the created record does not.
This error also raises a bogus/confusing deprecation warning when
accessing the association in Rails 3.2.x, so cherry-pick would be
appreciated!
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This reverts commit abf8de85519141496a6773310964ec03f6106f3f.
We should take a deeper look to those cases flat_map doesn't do deep
flattening.
irb(main):002:0> [[[1,3], [1,2]]].map{|i| i}.flatten
=> [1, 3, 1, 2]
irb(main):003:0> [[[1,3], [1,2]]].flat_map{|i| i}
=> [[1, 3], [1, 2]]
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Patches `CollectionAssociation#count` to return 0 without querying
if the parent record is new. Consider the following code:
class Account
has_many :dossiers
end
class Dossier
belongs_to :account
end
a = Account.new
a.dossiers.build
# before patch
a.dossiers.count
# SELECT COUNT(*) FROM "dossiers" WHERE "dossiers"."account_id" IS NULL
# => 0
# after
a.dosiers.count # fires without sql query
# => 0
Fixes #1856.
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65843e1acc0c8d285ff79f8c9c49d4d1215440be
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Integrate strong_parameters in Rails 4
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Fix collection= on hm:t join models when unsaved
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If assigning to a has_many :through collection against an unsaved
object using the collection=[<array_of_items>] syntax, the join models
were not properly created, previously.
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The COUNT clause of a finder_sql relationship is being rewritten from
COUNT(*) to COUNT(table_name.*). This does not appear to be valid syntax
in MySQL:
```
mysql> SELECT COUNT( table_name.* ) FROM `table_name`;
ERROR 1064 (42000): You have an error in your SQL syntax; check the
manual that corresponds to your MySQL server version for the right
syntax to use near '* ) FROM `table_name`' at line 1
```
This fixes the bug, as well as adding tests so we don't re-introduce
it in the future.
Fixes #3956.
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Fix eagerly loading associations without primary keys
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