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105 lines
2.3 KiB
Markdown
105 lines
2.3 KiB
Markdown
---
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title: .Store
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description: Returns a Scratch that is not reset on server rebuilds.
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categories: [functions]
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menu:
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docs:
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parent: functions
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keywords: [scratch]
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signature: []
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---
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The `.Store` method on `.Page` returns a [Scratch] to store and manipulate data. In contrast to the `.Scratch` method, this Scratch is not reset on server rebuilds.
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[Scratch]: /functions/scratch/
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### Methods
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#### .Set
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Sets the value of a given key.
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```go-html-template
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{{ .Store.Set "greeting" "Hello" }}
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```
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#### .Get
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Gets the value of a given key.
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```go-html-template
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{{ .Store.Set "greeting" "Hello" }}
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{{ .Store.Get "greeting" }} → Hello
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```
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#### .Add
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Adds a given value to existing value(s) of the given key.
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For single values, `Add` accepts values that support Go's `+` operator. If the first `Add` for a key is an array or slice, the following adds will be appended to that list.
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```go-html-template
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{{ .Store.Add "greetings" "Hello" }}
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{{ .Store.Add "greetings" "Welcome" }}
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{{ .Store.Get "greetings" }} → HelloWelcome
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```
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```go-html-template
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{{ .Store.Add "total" 3 }}
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{{ .Store.Add "total" 7 }}
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{{ .Store.Get "total" }} → 10
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```
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```go-html-template
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{{ .Store.Add "greetings" (slice "Hello") }}
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{{ .Store.Add "greetings" (slice "Welcome" "Cheers") }}
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{{ .Store.Get "greetings" }} → []interface {}{"Hello", "Welcome", "Cheers"}
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```
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#### .SetInMap
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Takes a `key`, `mapKey` and `value` and adds a map of `mapKey` and `value` to the given `key`.
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```go-html-template
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{{ .Store.SetInMap "greetings" "english" "Hello" }}
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{{ .Store.SetInMap "greetings" "french" "Bonjour" }}
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{{ .Store.Get "greetings" }} → map[french:Bonjour english:Hello]
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```
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#### .DeleteInMap
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Takes a `key` and `mapKey` and removes the map of `mapKey` from the given `key`.
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```go-html-template
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{{ .Store.SetInMap "greetings" "english" "Hello" }}
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{{ .Store.SetInMap "greetings" "french" "Bonjour" }}
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{{ .Store.DeleteInMap "greetings" "english" }}
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{{ .Store.Get "greetings" }} → map[french:Bonjour]
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```
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#### .GetSortedMapValues
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Returns an array of values from `key` sorted by `mapKey`.
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```go-html-template
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{{ .Store.SetInMap "greetings" "english" "Hello" }}
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{{ .Store.SetInMap "greetings" "french" "Bonjour" }}
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{{ .Store.GetSortedMapValues "greetings" }} → [Hello Bonjour]
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```
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#### .Delete
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Removes the given key.
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```go-html-template
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{{ .Store.Set "greeting" "Hello" }}
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{{ .Store.Delete "greeting" }}
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```
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