Flags

Flags are small bits of data that are stored on the Context object. Flags only live for a single request at a time, and are discarded once the request has finished processing.

Setting Flags

Let's say we have a handler as follows, how do we set a flag?

Setting a flag that already exists will overwrite it's value

gobblr.Use(func(c *gbl.Context) {
        // That's it!
        // This request will now have this flag until it's finished or removed
        c.Flag("example-flag", "example-data")
})

Clearing Flags

Let's say we have a handler as follows, how do we clear a flag?

Setting a flag that already exists will overwrite it's value

gobblr.Use(func(c *gbl.Context) {
        // That's it!
        // This request will no longer have the flag "example-flag"
        c.ClearFlag("example-flag")
})

Getting Flags

We have set all these lovely flags, how do we retrieve them? There are a couple handy functions for this.

• HasFlag() Will return true if the flag exists, false if it does not
• GetFlag() Will return the flag value as an interface{}

Reserved Flags

Some flag prefixes are reserved by different integrations

• fb:* - Reserved by the messenger integration to save information about the request
• sess:* - Reserved for setting variables on the session