There are 2 template packages, text/template and html/template. They have the same interface, but the html/template package is for generating HTML output safe against code injection, and should be used instead of text/template whenever the output is HTML. Since they have the same interface but the html/template provides some extra functionality (contextual escaping of the … Read more
Foreword: As Voker suggests, the Template.Tree field is “exported only for use by html/template and should be treated as unexported by all other clients.” You should not rely on such thing to be able to provide input for a template execution. You must know the template you want to execute along with the data it … Read more
There is no “builtin” action for getting the result of a template execution, but you may do it by registering a function which does that. You can register functions with the Template.Funcs() function, you may execute a named template with Template.ExecuteTemplate() and you may use a bytes.Buffer as the target (direct template execution result into … Read more
Custom functions need to be registered before parsing the templates, else the parser would not be able to tell whether an identifier is a valid function name or not. Templates are designed to be statically analyzable, and this is a requirement to that. You can first create a new, undefined template with template.New(), and besides … Read more
You may only pass a single value, but that value may be a composed value of multiple values, e.g. a struct, map or slice. So simply wrap your multiple data intended for the template in a struct or in a map. Example with a struct: type Data struct { Results []User // Must be exported! … Read more
Yes it is possible. A html.Template is actually a set of template files. If you execute a defined block in this set, it has access to all the other blocks defined in this set. If you create a map of such template sets on your own, you have basically the same flexibility that Jinja / … Read more
The name of the template–unsurprisingly–is to name the template. What is it good for? As long as you don’t want to refer to the template, it doesn’t really matter. But if you want to refer to it, then yes, you refer to it by its name. When would you want to refer to it? When … Read more
Since you don’t specify full path for the css folder just a relative one, whether your css files are found depends on the folder you run your application from (the working directory, this is what relative paths are resolved to). For example if you start your application from your src with go run server/server.go it … Read more
Note: Go 1.11 will support modifying template variables via assignment. This will be valid code: {{ $v := “init” }} {{ if true }} {{ $v = “changed” }} {{ end }} v: {{ $v }} {{/* “changed” */}} Original answer pre-dating Go 1.11 follows: Variables are not reset. Basically what happens is that you … Read more
You use the index function: {{index .Amap “key1”}} index Returns the result of indexing its first argument by the following arguments. Thus “index x 1 2 3” is, in Go syntax, x[1][2][3]. Each indexed item must be a map, slice, or array. https://golang.org/pkg/text/template#hdr-Functions