Document Auto Preload

This commit is contained in:
Jinzhu 2018-02-12 11:03:26 +08:00
parent 3b0f7c4d97
commit ff8709dec7
12 changed files with 31 additions and 11 deletions

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@ -851,7 +851,7 @@ db.SetLogger(log.New(os.Stdout, <span class="hljs-string">&quot;\r\n&quot;</span
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@ -984,7 +984,7 @@ db.Model(&amp;user).Association(<span class="hljs-string">&quot;Languages&quot;<
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@ -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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@ -758,7 +758,7 @@
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@ -1135,6 +1135,14 @@ db.Preload(<span class="hljs-string">&quot;Orders&quot;</span>).Preload(<span cl
<pre><code class="lang-go">db.Preload(<span class="hljs-string">&quot;Orders.OrderItems&quot;</span>).Find(&amp;users) <pre><code class="lang-go">db.Preload(<span class="hljs-string">&quot;Orders.OrderItems&quot;</span>).Find(&amp;users)
db.Preload(<span class="hljs-string">&quot;Orders&quot;</span>, <span class="hljs-string">&quot;state = ?&quot;</span>, <span class="hljs-string">&quot;paid&quot;</span>).Preload(<span class="hljs-string">&quot;Orders.OrderItems&quot;</span>).Find(&amp;users) db.Preload(<span class="hljs-string">&quot;Orders&quot;</span>, <span class="hljs-string">&quot;state = ?&quot;</span>, <span class="hljs-string">&quot;paid&quot;</span>).Preload(<span class="hljs-string">&quot;Orders.OrderItems&quot;</span>).Find(&amp;users)
</code></pre> </code></pre>
<h3 id="auto-preload">Auto Preload</h3>
<p>Always auto preload associations</p>
<pre><code class="lang-go"><span class="hljs-keyword">type</span> User <span class="hljs-keyword">struct</span> {
gorm.Model
Name <span class="hljs-keyword">string</span>
CompanyID <span class="hljs-keyword">uint</span>
Company Company <span class="hljs-string">`gorm:&quot;auto_preload&quot;`</span>
</code></pre>
<h2 id="update">Update</h2> <h2 id="update">Update</h2>
<h3 id="update-all-fields">Update All Fields</h3> <h3 id="update-all-fields">Update All Fields</h3>
<p><code>Save</code> will include all fields when perform the Updating SQL, even it is not changed</p> <p><code>Save</code> will include all fields when perform the Updating SQL, even it is not changed</p>
@ -1387,7 +1395,7 @@ db.Set(<span class="hljs-string">&quot;gorm:association_save_reference&quot;</sp
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@ -845,7 +845,7 @@ db.Model(&amp;User{}).RemoveIndex(<span class="hljs-string">&quot;idx_user_name&
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@ -594,6 +594,18 @@ db.Preload("Orders.OrderItems").Find(&users)
db.Preload("Orders", "state = ?", "paid").Preload("Orders.OrderItems").Find(&users) db.Preload("Orders", "state = ?", "paid").Preload("Orders.OrderItems").Find(&users)
``` ```
### Auto Preload
Always auto preload associations
```go
type User struct {
gorm.Model
Name string
CompanyID uint
Company Company `gorm:"auto_preload"`
```
## Update ## Update
### Update All Fields ### Update All Fields

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