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// Package editor enables users to create edit views from their content
// structs so that admins can manage content
package editor
import (
"bytes"
)
// Editable ensures data is editable
type Editable interface {
SetContentID(id int)
ContentID() int
ContentName() string
SetSlug(slug string)
Editor() *Editor
MarshalEditor() ([]byte, error)
}
// Editor is a view containing fields to manage content
type Editor struct {
ViewBuf *bytes.Buffer
}
// Field is used to create the editable view for a field
// within a particular content struct
type Field struct {
View []byte
}
// Form takes editable content and any number of Field funcs to describe the edit
// page for any content struct added by a user
func Form(post Editable, fields ...Field) ([]byte, error) {
editor := post.Editor()
editor.ViewBuf = &bytes.Buffer{}
editor.ViewBuf.Write([]byte(`<table><tbody class="row"><tr class="col s8"><td>`))
for _, f := range fields {
addFieldToEditorView(editor, f)
}
editor.ViewBuf.Write([]byte(`</td></tr>`))
// content items with Item embedded have some default fields we need to render
editor.ViewBuf.Write([]byte(`<tr class="col s4 default-fields"><td>`))
addPostDefaultFieldsToEditorView(post, editor)
submit := `
<div class="input-field">
<button class="right waves-effect waves-light btn green" type="submit">Save</button>
</div>
`
editor.ViewBuf.Write([]byte(submit + `</td></tr></tbody></table>`))
return editor.ViewBuf.Bytes(), nil
}
func addFieldToEditorView(e *Editor, f Field) {
e.ViewBuf.Write(f.View)
}
func addPostDefaultFieldsToEditorView(p Editable, e *Editor) {
defaults := []Field{
Field{
View: Input("Timestamp", p, map[string]string{
"label": "Publish Date",
"type": "date",
}),
},
Field{
View: Input("Slug", p, map[string]string{
"label": "URL Slug",
"type": "text",
"disabled": "true",
"placeholder": "Will be set automatically",
}),
},
}
for _, f := range defaults {
addFieldToEditorView(e, f)
}
}
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