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2.7 KiB
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Store | Creates a persistent "scratch pad" on the given page to store and manipulate data. |
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The Store
method on a Page
object creates a persistent scratch pad to store and manipulate data. In contrast with the Scratch
method, the scratch pad created by the Store
method is not reset on server rebuilds.
To create a locally scoped scratch pad that is not attached to a Page
object, use the newScratch
function.
Methods
Set
Sets the value of a given key.
{{ .Store.Set "greeting" "Hello" }}
Get
Gets the value of a given key.
{{ .Store.Set "greeting" "Hello" }}
{{ .Store.Get "greeting" }} → Hello
Add
Adds a given value to existing value(s) of the given key.
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.
{{ .Store.Set "greeting" "Hello" }}
{{ .Store.Add "greeting" "Welcome" }}
{{ .Store.Get "greeting" }} → HelloWelcome
{{ .Store.Set "total" 3 }}
{{ .Store.Add "total" 7 }}
{{ .Store.Get "total" }} → 10
{{ .Store.Set "greetings" (slice "Hello") }}
{{ .Store.Add "greetings" (slice "Welcome" "Cheers") }}
{{ .Store.Get "greetings" }} → [Hello Welcome Cheers]
SetInMap
Takes a key
, mapKey
and value
and adds a map of mapKey
and value
to the given key
.
{{ .Store.SetInMap "greetings" "english" "Hello" }}
{{ .Store.SetInMap "greetings" "french" "Bonjour" }}
{{ .Store.Get "greetings" }} → map[english:Hello french:Bonjour]
DeleteInMap
Takes a key
and mapKey
and removes the map of mapKey
from the given key
.
{{ .Store.SetInMap "greetings" "english" "Hello" }}
{{ .Store.SetInMap "greetings" "french" "Bonjour" }}
{{ .Store.DeleteInMap "greetings" "english" }}
{{ .Store.Get "greetings" }} → map[french:Bonjour]
GetSortedMapValues
Returns an array of values from key
sorted by mapKey
.
{{ .Store.SetInMap "greetings" "english" "Hello" }}
{{ .Store.SetInMap "greetings" "french" "Bonjour" }}
{{ .Store.GetSortedMapValues "greetings" }} → [Hello Bonjour]
Delete
Removes the given key.
{{ .Store.Set "greeting" "Hello" }}
{{ .Store.Delete "greeting" }}