Add error check for transaction

This commit is contained in:
Jinzhu 2018-02-12 14:28:47 +08:00
parent ff8709dec7
commit 4df56744d0
12 changed files with 21 additions and 15 deletions

View File

@ -712,6 +712,10 @@ tx.Commit()
tx := db.Begin() tx := db.Begin()
<span class="hljs-comment">// Note the use of tx as the database handle once you are within a transaction</span> <span class="hljs-comment">// Note the use of tx as the database handle once you are within a transaction</span>
<span class="hljs-keyword">if</span> tx.Error != <span class="hljs-literal">nil</span> {
<span class="hljs-keyword">return</span> err
}
<span class="hljs-keyword">if</span> err := tx.Create(&amp;Animal{Name: <span class="hljs-string">&quot;Giraffe&quot;</span>}).Error; err != <span class="hljs-literal">nil</span> { <span class="hljs-keyword">if</span> err := tx.Create(&amp;Animal{Name: <span class="hljs-string">&quot;Giraffe&quot;</span>}).Error; err != <span class="hljs-literal">nil</span> {
tx.Rollback() tx.Rollback()
<span class="hljs-keyword">return</span> err <span class="hljs-keyword">return</span> err
@ -722,8 +726,7 @@ tx.Commit()
<span class="hljs-keyword">return</span> err <span class="hljs-keyword">return</span> err
} }
tx.Commit() <span class="hljs-keyword">return</span> tx.Commit().Error
<span class="hljs-keyword">return</span> <span class="hljs-literal">nil</span>
} }
</code></pre> </code></pre>
<h2 id="sql-builder">SQL Builder</h2> <h2 id="sql-builder">SQL Builder</h2>
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View File

@ -984,7 +984,7 @@ db.Model(&amp;user).Association(<span class="hljs-string">&quot;Languages&quot;<
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View File

@ -788,7 +788,7 @@ If you want to use those changes in your callbacks, you need to run your SQL in
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View File

@ -49,6 +49,10 @@ func CreateAnimals(db *gorm.DB) err {
tx := db.Begin() tx := db.Begin()
// Note the use of tx as the database handle once you are within a transaction // Note the use of tx as the database handle once you are within a transaction
if tx.Error != nil {
return err
}
if err := tx.Create(&Animal{Name: "Giraffe"}).Error; err != nil { if err := tx.Create(&Animal{Name: "Giraffe"}).Error; err != nil {
tx.Rollback() tx.Rollback()
return err return err
@ -59,8 +63,7 @@ func CreateAnimals(db *gorm.DB) err {
return err return err
} }
tx.Commit() return tx.Commit().Error
return nil
} }
``` ```

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