go-templates

问题 I am currently deploying my applications in a Kubernetes cluster using Helm. Now I also need to be able to modify some parameter in the values.yaml file for different environments. For simple charts with only one level this is easy by having different values-local.yaml and values-prod.yaml and add this to the helm install flag, e.g. helm install --values values-local.yaml . But if I have a second layer of subcharts, which also need to distinguish the values between multiple environments, I

问题 I am currently deploying my applications in a Kubernetes cluster using Helm. Now I also need to be able to modify some parameter in the values.yaml file for different environments. For simple charts with only one level this is easy by having different values-local.yaml and values-prod.yaml and add this to the helm install flag, e.g. helm install --values values-local.yaml . But if I have a second layer of subcharts, which also need to distinguish the values between multiple environments, I

问题 Is it possible, within a {{range pipeline}} T1 {{end}} action in the text/template package to access the pipelines value prior to the range action, or the parent/global pipeline passed as an argument to Execute? Working example that shows what I try to do: package main import ( "os" "text/template" ) // .Path won't be accessible, because dot will be changed to the Files element const page = `{{range .Files}}<script src="{{html .Path}}/js/{{html .}}"></script>{{end}}` type scriptFiles struct {

问题 In my go code I often use if like this if user && user.Registered { } equivalent code in go templates would be {{ if and .User .User.Registered }} {{ end }} Unfortunately code in the template fails, if .User is nil :/ Is it possible to achieve the same thing in go templates? 回答1: The template and function does not do short circuit evaluation like the Go && operator. The arguments to the and function are evaluated before the function is called. The expression .User.Registered is always

问题 So I have and html template when using this I get the object: <div>Foobar {{ index .Doc.Users 0}}</div> Output: <div>Foobar {MyName my@email.com}</div> I just want to use the Name field I have tried many iterations without success: {{ index .Doc.Users.Name 0}} {{ index .Doc.Users 0 .Name}} {{ .Name index .Quote.Clients 0}} ... What is the correct syntax for just getting .Name field ( .Doc.Users[0].Name ) of the first element in my array? 回答1: Simply group the expression and apply the .Name

问题 So I have and html template when using this I get the object: <div>Foobar {{ index .Doc.Users 0}}</div> Output: <div>Foobar {MyName my@email.com}</div> I just want to use the Name field I have tried many iterations without success: {{ index .Doc.Users.Name 0}} {{ index .Doc.Users 0 .Name}} {{ .Name index .Quote.Clients 0}} ... What is the correct syntax for just getting .Name field ( .Doc.Users[0].Name ) of the first element in my array? 回答1: Simply group the expression and apply the .Name

问题 So I have and html template when using this I get the object: <div>Foobar {{ index .Doc.Users 0}}</div> Output: <div>Foobar {MyName my@email.com}</div> I just want to use the Name field I have tried many iterations without success: {{ index .Doc.Users.Name 0}} {{ index .Doc.Users 0 .Name}} {{ .Name index .Quote.Clients 0}} ... What is the correct syntax for just getting .Name field ( .Doc.Users[0].Name ) of the first element in my array? 回答1: Simply group the expression and apply the .Name

问题 I am trying to display a list gym classes (Yoga, Pilates etc). For each class type there are several classes, so I want to group all the Yoga classes, and all the Pilates classes and so on. I made this function to take a slice and make a map of it func groupClasses(classes []entities.Class) map[string][]entities.Class { classMap := make(map[string][]entities.Class) for _, class := range classes { classMap[class.ClassType.Name] = append(classMap[class.ClassType.Name], class) } return classMap

问题 I am trying to display a list gym classes (Yoga, Pilates etc). For each class type there are several classes, so I want to group all the Yoga classes, and all the Pilates classes and so on. I made this function to take a slice and make a map of it func groupClasses(classes []entities.Class) map[string][]entities.Class { classMap := make(map[string][]entities.Class) for _, class := range classes { classMap[class.ClassType.Name] = append(classMap[class.ClassType.Name], class) } return classMap

问题 values.yaml replicas: { test: 1, stage: 2, prod: 3 } Here I am trying to use Helm templates to define number of replicas per namespace but am unsure of the proper syntax and pattern: deployment.yaml replicas: {{ .Values.replicas.{{ .Release.Namespace }} }} So if this were deployed to --namespace=prod , I would expect the template to return: # .Values.replicas.prod replicas: 3 回答1: All of the template functions provided by the standard Go text/template library are available. In particular,