62 lines
1.4 KiB
Go
62 lines
1.4 KiB
Go
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package core
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import (
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"html/template"
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"net/http"
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)
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// DefaultVars combines template variables with default, globally available vars.
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func (b *Blog) DefaultVars(vars map[string]interface{}) map[string]interface{} {
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defaults := map[string]interface{}{
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"title": "Untitled Blog",
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}
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if vars == nil {
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return defaults
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}
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for k, v := range defaults {
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vars[k] = v
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}
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return vars
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}
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// RenderTemplate responds with an HTML template.
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func (b *Blog) RenderTemplate(w http.ResponseWriter, r *http.Request, path string, vars map[string]interface{}) error {
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// Get the layout template.
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layout, err := b.ResolvePath(".layout")
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if err != nil {
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log.Error("RenderTemplate(%s): layout template not found", path)
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return err
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}
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// And the template in question.
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filepath, err := b.ResolvePath(path)
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if err != nil {
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log.Error("RenderTemplate(%s): file not found", path)
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return err
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}
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// Parse the template files. The layout comes first because it's the wrapper
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// and allows the filepath template to set the page title.
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t, err := template.ParseFiles(layout.Absolute, filepath.Absolute)
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if err != nil {
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log.Error(err.Error())
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return err
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}
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// Inject globally available variables.
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vars = b.DefaultVars(vars)
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w.Header().Set("Content-Type", "text/html; encoding=UTF-8")
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err = t.ExecuteTemplate(w, "layout", vars)
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if err != nil {
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log.Error("Template parsing error: %s", err)
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return err
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}
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log.Debug("Parsed template")
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return nil
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}
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