733 lines
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733 lines
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<title>Change Log · GORM Guide</title>
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<meta name="description" content="gorm.Open return type *gorm.DB instead of gorm.DB">
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<div class="book"
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data-level="7"
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data-chapter-title="Change Log"
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data-filepath="changelog.md"
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data-basepath="."
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data-revision="Mon Mar 28 2016 10:39:40 GMT+0800 (CST)"
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data-innerlanguage="">
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<li class="chapter " data-level="0" data-path="./">
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<a href="./">
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Getting Started with GORM
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</a>
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</li>
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<li class="chapter " data-level="1" data-path="database.html">
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<a href="database.html">
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<b>1.</b>
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Database
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.1" data-path="database.html">
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<a href="database.html#connecting-to-a-database">
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<b>1.1.</b>
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Database Connection
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</a>
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</li>
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<li class="chapter " data-level="1.2" data-path="database.html">
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<a href="database.html#migration">
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<b>1.2.</b>
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Migration
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="2" data-path="models.html">
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<a href="models.html">
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<b>2.</b>
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Models
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</a>
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<ul class="articles">
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<li class="chapter " data-level="2.1" data-path="models.html">
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<a href="models.html#model-definition">
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<b>2.1.</b>
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Model Definition
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</a>
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</li>
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<li class="chapter " data-level="2.2" data-path="models.html">
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<a href="models.html#conventions">
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<b>2.2.</b>
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Conventions & Overriding
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</a>
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</li>
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<li class="chapter " data-level="2.3" data-path="associations.html">
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<a href="associations.html">
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<b>2.3.</b>
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Associations
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</a>
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<ul class="articles">
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<li class="chapter " data-level="2.3.1" data-path="associations.html">
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<a href="associations.html#belongs-to">
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<b>2.3.1.</b>
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Belongs To
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</a>
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</li>
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<li class="chapter " data-level="2.3.2" data-path="associations.html">
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<a href="associations.html#has-one">
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<b>2.3.2.</b>
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Has One
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</a>
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</li>
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<li class="chapter " data-level="2.3.3" data-path="associations.html">
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<a href="associations.html#has-many">
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<b>2.3.3.</b>
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Has Many
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</a>
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</li>
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<li class="chapter " data-level="2.3.4" data-path="associations.html">
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<a href="associations.html#many-to-many">
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<b>2.3.4.</b>
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Many To Many
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</a>
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</li>
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<li class="chapter " data-level="2.3.5" data-path="associations.html">
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<a href="associations.html#polymorphism">
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<b>2.3.5.</b>
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Polymorphism
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</a>
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</li>
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<li class="chapter " data-level="2.3.6" data-path="associations.html">
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<a href="associations.html#association-mode">
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<b>2.3.6.</b>
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Association Mode
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</a>
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</li>
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</ul>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="3" data-path="curd.html">
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<a href="curd.html">
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<b>3.</b>
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CRUD: Reading and Writing Data
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</a>
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<ul class="articles">
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<li class="chapter " data-level="3.1" data-path="curd.html">
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<a href="curd.html#create">
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<b>3.1.</b>
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Create
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</a>
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</li>
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<li class="chapter " data-level="3.2" data-path="curd.html">
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<a href="curd.html#query">
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<b>3.2.</b>
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Query
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</a>
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</li>
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<li class="chapter " data-level="3.3" data-path="curd.html">
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<a href="curd.html#preloading-eager-loading">
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<b>3.3.</b>
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Preloading (Eager Loading)
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</a>
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</li>
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<li class="chapter " data-level="3.4" data-path="curd.html">
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<a href="curd.html#update">
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<b>3.4.</b>
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Update
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</a>
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</li>
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<li class="chapter " data-level="3.5" data-path="curd.html">
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<a href="curd.html#delete">
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<b>3.5.</b>
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Delete / Soft Delete
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="4" data-path="callbacks.html">
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<a href="callbacks.html">
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<b>4.</b>
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Callbacks
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</a>
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</li>
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<li class="chapter " data-level="5" data-path="advanced.html">
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<a href="advanced.html">
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<b>5.</b>
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Advanced Usage
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</a>
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<ul class="articles">
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<li class="chapter " data-level="5.1" data-path="advanced.html">
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<a href="advanced.html#error-handling">
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<b>5.1.</b>
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Error Handling
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</a>
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</li>
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<li class="chapter " data-level="5.2" data-path="advanced.html">
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<a href="advanced.html#transactions">
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<b>5.2.</b>
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Transactions
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</a>
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</li>
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<li class="chapter " data-level="5.3" data-path="advanced.html">
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<a href="advanced.html#sql-builder">
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<b>5.3.</b>
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Raw SQL & SQL Builder
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</a>
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</li>
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<li class="chapter " data-level="5.4" data-path="advanced.html">
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<a href="advanced.html#generic-database-interface-sqldb">
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<b>5.4.</b>
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Generic database interface sql.DB
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</a>
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</li>
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<li class="chapter " data-level="5.5" data-path="advanced.html">
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<a href="advanced.html#compose-primary-key">
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<b>5.5.</b>
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Composite Primary Key
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</a>
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</li>
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<li class="chapter " data-level="5.6" data-path="advanced.html">
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<a href="advanced.html#logger">
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<b>5.6.</b>
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Overriding Logger
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="6" data-path="development.html">
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<a href="development.html">
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<b>6.</b>
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Development
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</a>
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<ul class="articles">
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<li class="chapter " data-level="6.1" data-path="development.html">
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<a href="development.html#architecture">
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<b>6.1.</b>
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Architecture
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</a>
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</li>
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<li class="chapter " data-level="6.2" data-path="development.html">
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<a href="development.html#write-plugins">
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<b>6.2.</b>
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Write Plugins
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter active" data-level="7" data-path="changelog.html">
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<a href="changelog.html">
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<b>7.</b>
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Change Log
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</a>
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</li>
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<li class="divider"></li>
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</ul>
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</nav>
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<div class="book-body">
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<div class="body-inner">
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<div class="book-header" role="navigation">
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<!-- Title -->
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<h1>
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<i class="fa fa-circle-o-notch fa-spin"></i>
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<a href="." >Change Log</a>
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</h1>
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</div>
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<div class="page-wrapper" tabindex="-1" role="main">
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<div class="page-inner">
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<section class="normal markdown-section">
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<h1 id="change-log">Change Log</h1>
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<h2 id="v10">v1.0</h2>
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<h4 id="breaking-changes">Breaking Changes</h4>
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<ul>
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<li><p><strong><code>gorm.Open</code> return type <code>*gorm.DB</code> instead of <code>gorm.DB</code></strong></p>
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</li>
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<li><p><strong>Updating will only update changed fields</strong></p>
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<p>Most applications won't be affected, only when you are changing updating values in callbacks like <code>BeforeSave</code>, <code>BeforeUpdate</code>, you should use <code>scope.SetColumn</code> then, for example:</p>
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<pre><code class="lang-go"><span class="hljs-keyword">func</span> (user *User) BeforeUpdate(scope *gorm.Scope) {
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<span class="hljs-keyword">if</span> pw, err := bcrypt.GenerateFromPassword(user.Password, <span class="hljs-number">0</span>); err == <span class="hljs-literal">nil</span> {
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scope.SetColumn(<span class="hljs-string">"EncryptedPassword"</span>, pw)
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<span class="hljs-comment">// user.EncryptedPassword = pw // doesn't work, won't including EncryptedPassword field when updating</span>
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}
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}
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</code></pre>
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</li>
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<li><p><strong>Soft Delete's default querying scope will only check <code>deleted_at IS NULL</code></strong></p>
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<p>Before it will check <code>deleted_at</code> less than <code>0001-01-02</code> also to exclude blank time, like:</p>
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<p><code>SELECT * FROM users WHERE deleted_at IS NULL OR deleted_at <= '0001-01-02'</code></p>
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<p>But it is not necessary if you are using type <code>*time.Time</code> for your model's <code>DeletedAt</code>, which has been used by <code>gorm.Model</code>, so below SQl is enough</p>
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<p><code>SELECT * FROM users WHERE deleted_at IS NULL</code></p>
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<p>So if you are using <code>gorm.Model</code>, then you are good, nothing need to be change, just make sure all records having blank time for <code>deleted_at</code> set to <code>NULL</code>, sample migrate script:</p>
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</li>
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</ul>
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<pre><code class="lang-go"><span class="hljs-keyword">import</span> (
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<span class="hljs-string">"github.com/jinzhu/now"</span>
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)
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<span class="hljs-keyword">func</span> main() {
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<span class="hljs-keyword">var</span> models = []<span class="hljs-keyword">interface</span>{}{&User{}, &Image{}}
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<span class="hljs-keyword">for</span> _, model := <span class="hljs-keyword">range</span> models {
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db.Unscoped().Model(model).Where(<span class="hljs-string">"deleted_at < ?"</span>, now.MustParse(<span class="hljs-string">"0001-01-02"</span>)).Update(<span class="hljs-string">"deleted_at"</span>, gorm.Expr(<span class="hljs-string">"NULL"</span>))
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}
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}
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</code></pre>
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<ul>
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<li><p><strong>New ToDBName logic</strong></p>
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<p>Before when GORM convert Struct, Field's name to db name, only those common initialisms from <a href="https://github.com/golang/lint/blob/master/lint.go#L702" target="_blank">golint</a> like <code>HTTP</code>, <code>URI</code> are special handled.</p>
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<p>So field <code>HTTP</code>'s db name will be <code>http</code> not <code>h_t_t_p</code>, but some other initialisms like <code>SKU</code> that not in golint, it's db name will be <code>s_k_u</code>, which looks ugly, this release fixed this, any upper case initialisms should be converted correctly.</p>
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<p>If your applications using some upper case initialisms which doesn't exist in <a href="https://github.com/golang/lint/blob/master/lint.go#L702" target="_blank">golint</a>, you need to overwrite default column name with tag, like <code>gorm:"column:s_k_u"</code>, or alert your database's column name according to new logic</p>
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</li>
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<li><p>Error <code>RecordNotFound</code> has been renamed to <code>ErrRecordNotFound</code></p>
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</li>
|
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<li><p><code>mssql</code> driver has been moved out from default drivers, import it with <code>import _ "github.com/jinzhu/gorm/dialects/mssql"</code></p>
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</li>
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<li><p><code>Hstore</code> has been moved to package <code>github.com/jinzhu/gorm/dialects/postgres</code></p>
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</li>
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</ul>
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