diff options
Diffstat (limited to 'activerecord/lib/active_record/errors.rb')
-rw-r--r-- | activerecord/lib/active_record/errors.rb | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/errors.rb b/activerecord/lib/active_record/errors.rb index 8fbe43e3ec..c812a05101 100644 --- a/activerecord/lib/active_record/errors.rb +++ b/activerecord/lib/active_record/errors.rb @@ -43,7 +43,7 @@ module ActiveRecord # Raised when connection to the database could not been established (for example when # {ActiveRecord::Base.connection=}[rdoc-ref:ConnectionHandling#connection] - # is given a nil object). + # is given a +nil+ object). class ConnectionNotEstablished < ActiveRecordError end @@ -123,10 +123,46 @@ module ActiveRecord class InvalidForeignKey < WrappedDatabaseException end + # Raised when a foreign key constraint cannot be added because the column type does not match the referenced column type. + class MismatchedForeignKey < StatementInvalid + def initialize(adapter = nil, message: nil, table: nil, foreign_key: nil, target_table: nil, primary_key: nil) + @adapter = adapter + if table + msg = <<-EOM.strip_heredoc + Column `#{foreign_key}` on table `#{table}` has a type of `#{column_type(table, foreign_key)}`. + This does not match column `#{primary_key}` on `#{target_table}`, which has type `#{column_type(target_table, primary_key)}`. + To resolve this issue, change the type of the `#{foreign_key}` column on `#{table}` to be :integer. (For example `t.integer #{foreign_key}`). + EOM + else + msg = <<-EOM + There is a mismatch between the foreign key and primary key column types. + Verify that the foreign key column type and the primary key of the associated table match types. + EOM + end + if message + msg << "\nOriginal message: #{message}" + end + super(msg) + end + + private + def column_type(table, column) + @adapter.columns(table).detect { |c| c.name == column }.sql_type + end + end + + # Raised when a record cannot be inserted or updated because it would violate a not null constraint. + class NotNullViolation < StatementInvalid + end + # Raised when a record cannot be inserted or updated because a value too long for a column type. class ValueTooLong < StatementInvalid end + # Raised when values that executed are out of range. + class RangeError < StatementInvalid + end + # Raised when number of bind variables in statement given to +:condition+ key # (for example, when using {ActiveRecord::Base.find}[rdoc-ref:FinderMethods#find] method) # does not match number of expected values supplied. |