Upgrading your Yii framework Version from 1.0 to 1.1

Changes Related with Model Scenarios

• Removed CModel::safeAttributes(). Safe attributes are now defined to
  be those that are being validated by some rules as defined in CModel::rules()
  for the particular scenario.

• Changed CModel::validate(), CModel::beforeValidate() and CModel::afterValidate().
  CModel::setAttributes(), CModel::getSafeAttributeNames()
  The ‘scenario’ parameter is removed. You should get and set the model scenario
  via CModel::scenario.

• Changed CModel::getValidators() and removed CModel::getValidatorsForAttribute().
  CModel::getValidators() now only returns validators applicable to the scenario
  as specified by the model’s scenario property.

• Changed CModel::isAttributeRequired() and CModel::getValidatorsForAttribute().
  The scenario parameter is removed. The model’s scenario property will be
  used, instead.

• Removed CHtml::scenario. CHtml will use the model’s scenario property instead.

Changes Related with Eager Loading for Relational Active Record

By default, a single JOIN statement will be generated and executed for all relations involved in the eager loading. If the primary table has its LIMIT or OFFSET query option set, it will be queried alone first, followed by another SQL statement that brings back all its related objects. Previously in version 1.0.x, the default behavior is that there will be N+1 SQL statements if an eager loading involves N HAS_MANY or MANY_MANY relations.

Changes Related with Table Alias in Relational Active Record

• The default alias for a relational table is now the same as the corresponding
  relation name. Previously in version 1.0.x, by default Yii would automatically
  generate a table alias for each relational table, and we had to use the prefix
  ??. to refer to this automatically generated alias.

• The alias name for the primary table in an AR query is fixed to be t.
  Previsouly in version 1.0.x, it was the same as the table name. This will cause
  existing AR query code to break if they explicity specify column prefixes using
  the table name. The solution is to replace these prefixes with ‘t.’.

Changes Related with Tabular Input

For attribute names, using Field[$i] is not valid anymore, they should look like [$i]Field in order to support array-typed fields (e.g. [$i]Field[$index]).

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Prem Tiwari

An engineer by profession and a passionate blogger by heart. Founder of FreeWebMentor.com (A Programming blog for beginners), Tech Speaker at various forums. A part from this he is an open source enthusiast, WordPress Lover, Blogger, SEO, and Growth Strategic.

Article Tags: Php Framework, Yii

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