adding deleteable example, rename and modify externalable -> createable

7 files changed, 171 insertions, 23 deletions

diff --git a/examples/README.md b/examples/README.md
index f575db7..cd070b1 100644
--- a/examples/README.md
+++ b/examples/README.md
@@ -10,6 +10,6 @@ feature, it would be very helpful to include an example with a concrete use-case
 for this directory. 
 
 ### Table of Contents
-1. [Add content via HTTP API using the `api.Externalable` interface](https://github.com/ponzu-cms/ponzu/tree/master/examples/externalable)
+1. [Add content via HTTP API using the `api.Createable` interface](https://github.com/ponzu-cms/ponzu/tree/master/examples/createable)
 2. [Update content via HTTP API using the `api.Updateable` interface](https://github.com/ponzu-cms/ponzu/tree/master/examples/updateable)
 
diff --git a/examples/externalable/README.md b/examples/createable/README.md
index 025e7fb..44ba03c 100644
--- a/examples/externalable/README.md
+++ b/examples/createable/README.md
@@ -1,8 +1,8 @@
-# Externalable
+# Createable
 
 This example shows how to enable outside clients to submit content to your CMS.
 All content submitted must be done through a POST request encoded as `multipart/form-data`
-to the API endpoint `/api/content/external?type=<Type>`
+to the API endpoint `/api/content/create?type=<Type>`
 
 ## Song example
 Imagine an app that lets users add Spotify music to a global playlist, and you need them
@@ -23,7 +23,7 @@ See the file `content/song.go` and read the comments to understand the various
 methods needed to satisfy required interfaces for this kind of activity.
 
 ### Overview
-1. Implement `api.Externalable` with the `Accept(http.ResponseWriter, *http.Request)` method to allow outside POST requests
+1. Implement `api.Createable` with the `Create(http.ResponseWriter, *http.Request)` method to allow outside POST requests
 2. Implement `editor.Mergeable` with the `Approve(http.ResponseWriter, *http.Request)` method so you can control the Approval / Rejection of submitted content OR
 3. Implement `api.Trustable`  with the `AutoApprove(http.ResponseWriter, *http.Request)` method to bypass `Approve` and auto-approve and publish submitted content
 
diff --git a/examples/externalable/content/song.go b/examples/createable/content/song.go
index f2b1b73..74a6d4a 100644
--- a/examples/externalable/content/song.go
+++ b/examples/createable/content/song.go
@@ -78,10 +78,10 @@ func init() {
 // String defines the display name of a Song in the CMS list-view
 func (s *Song) String() string { return s.Title }
 
-// Accept implements api.Externalable, and allows external POST requests from clients
+// Create implements api.Createable, and allows external POST requests from clients
 // to add content as long as the request contains the json tag names of the Song
 // struct fields, and is multipart encoded
-func (s *Song) Accept(res http.ResponseWriter, req *http.Request) error {
+func (s *Song) Create(res http.ResponseWriter, req *http.Request) error {
 	// do form data validation for required fields
 	required := []string{
 		"title",
@@ -101,10 +101,10 @@ func (s *Song) Accept(res http.ResponseWriter, req *http.Request) error {
 	return nil
 }
 
-// BeforeAccept is only called if the Song type implements api.Externalable
-// It is called before Accept, and returning an error will cancel the request
+// BeforeAPICreate is only called if the Song type implements api.Createable
+// It is called before Create, and returning an error will cancel the request
 // causing the system to reject the data sent in the POST
-func (s *Song) BeforeAccept(res http.ResponseWriter, req *http.Request) error {
+func (s *Song) BeforeAPICreate(res http.ResponseWriter, req *http.Request) error {
 	// do initial user authentication here on the request, checking for a
 	// token or cookie, or that certain form fields are set and valid
 
@@ -116,16 +116,16 @@ func (s *Song) BeforeAccept(res http.ResponseWriter, req *http.Request) error {
 	}
 
 	// you could then to data validation on the request post form, or do it in
-	// the Accept method, which is called after BeforeAccept
+	// the Create method, which is called after BeforeAPICreate
 
 	return nil
 }
 
-// AfterAccept is called after Accept, and is useful for logging or triggering
+// AfterAPICreate is called after Create, and is useful for logging or triggering
 // notifications, etc. after the data is saved to the database, etc.
 // The request has a context containing the databse 'target' affected by the
 // request. Ex. Song__pending:3 or Song:8 depending if Song implements api.Trustable
-func (s *Song) AfterAccept(res http.ResponseWriter, req *http.Request) error {
+func (s *Song) AfterAPICreate(res http.ResponseWriter, req *http.Request) error {
 	addr := req.RemoteAddr
 	log.Println("Song sent by:", addr, "titled:", req.PostFormValue("title"))
 
@@ -149,7 +149,7 @@ func (s *Song) Approve(res http.ResponseWriter, req *http.Request) error {
 */
 
 // AutoApprove implements api.Trustable, and will automatically approve content
-// that has been submitted by an external client via api.Externalable. Be careful
+// that has been submitted by an external client via api.Createable. Be careful
 // when using AutoApprove, because content will immediately be available through
 // your public content API. If the Trustable interface is satisfied, the AfterApprove
 // method is bypassed. The
diff --git a/examples/deleteable/README.md b/examples/deleteable/README.md
new file mode 100644
index 0000000..06f4188
--- /dev/null
+++ b/examples/deleteable/README.md
@@ -0,0 +1,31 @@
+# Updateable
+
+This example shows how to enable outside clients to update content to your CMS.
+All content submitted must be done through a POST request encoded as `multipart/form-data`
+to the API endpoint `/api/content/update?type=<Type>&id=<id>`
+
+## Song example
+Imagine an app that lets users add Spotify music to a global playlist, and you need them
+to supply songs in the format:
+```go
+type Song struct {
+	item.Item
+
+	Title      string `json:"title"`
+	Artist     string `json:"artist"`
+	Rating     int    `json:"rating"`
+	Opinion    string `json:"opinion"`
+	SpotifyURL string `json:"spotify_url"`
+}
+```
+
+See the file `content/song.go` and read the comments to understand the various
+methods needed to satisfy required interfaces for this kind of activity.
+
+### Overview
+1. Implement `api.Updateable` with the `Update(http.ResponseWriter, *http.Request)` method to allow outside POST requests. 
+2. Consistent with the createable example, authentication can be validated in `BeforeAPIUpdate(http.ResponseWriter, *http.Request)`
+
+There are various validation and request checks shown in this example as well. 
+Please feel free to modify and submit a PR for updates or bug fixes!
+
diff --git a/examples/deleteable/content/song.go b/examples/deleteable/content/song.go
new file mode 100644
index 0000000..2198e33
--- /dev/null
+++ b/examples/deleteable/content/song.go
@@ -0,0 +1,117 @@
+package content
+
+import (
+	"fmt"
+	"log"
+
+	"net/http"
+
+	"github.com/ponzu-cms/ponzu/management/editor"
+	"github.com/ponzu-cms/ponzu/system/admin/user"
+	"github.com/ponzu-cms/ponzu/system/item"
+)
+
+type Song struct {
+	item.Item
+
+	Title      string `json:"title"`
+	Artist     string `json:"artist"`
+	Rating     int    `json:"rating"`
+	Opinion    string `json:"opinion"`
+	SpotifyURL string `json:"spotify_url"`
+}
+
+// MarshalEditor writes a buffer of html to edit a Song within the CMS
+// and implements editor.Editable
+func (s *Song) MarshalEditor() ([]byte, error) {
+	view, err := editor.Form(s,
+		// Take note that the first argument to these Input-like functions
+		// is the string version of each Song field, and must follow
+		// this pattern for auto-decoding and auto-encoding reasons:
+		editor.Field{
+			View: editor.Input("Title", s, map[string]string{
+				"label":       "Title",
+				"type":        "text",
+				"placeholder": "Enter the Title here",
+			}),
+		},
+		editor.Field{
+			View: editor.Input("Artist", s, map[string]string{
+				"label":       "Artist",
+				"type":        "text",
+				"placeholder": "Enter the Artist here",
+			}),
+		},
+		editor.Field{
+			View: editor.Input("Rating", s, map[string]string{
+				"label":       "Rating",
+				"type":        "text",
+				"placeholder": "Enter the Rating here",
+			}),
+		},
+		editor.Field{
+			View: editor.Richtext("Opinion", s, map[string]string{
+				"label":       "Opinion",
+				"placeholder": "Enter the Opinion here",
+			}),
+		},
+		editor.Field{
+			View: editor.Input("SpotifyURL", s, map[string]string{
+				"label":       "SpotifyURL",
+				"type":        "text",
+				"placeholder": "Enter the SpotifyURL here",
+			}),
+		},
+	)
+
+	if err != nil {
+		return nil, fmt.Errorf("Failed to render Song editor view: %s", err.Error())
+	}
+
+	return view, nil
+}
+
+func init() {
+	item.Types["Song"] = func() interface{} { return new(Song) }
+}
+
+// String defines the display name of a Song in the CMS list-view
+func (s *Song) String() string { return s.Title }
+
+// BeforeAPIDelete is only called if the Song type implements api.Deleteable
+// It is called before Delete, and returning an error will cancel the request
+// causing the system to reject the data sent in the POST
+func (s *Song) BeforeAPIDelete(res http.ResponseWriter, req *http.Request) error {
+	// do initial user authentication here on the request, checking for a
+	// token or cookie, or that certain form fields are set and valid
+
+	// for example, this will check if the request was made by a CMS admin user:
+	if !user.IsValid(req) {
+		addr := req.RemoteAddr
+		err := fmt.Errorf("request rejected, invalid user. IP: %s", addr)
+		return err
+	}
+
+	// you could then to data validation on the request post form, or do it in
+	// the Delete method, which is called after BeforeAPIDelete
+
+	return nil
+}
+
+// Delete is called after BeforeAPIDelete and implements api.Deleteable. All
+// other delete-based hooks are only called if this is implemented.
+func (s *Song) Delete(res http.ResponseWriter, req *http.Request) error {
+	// See BeforeAPIDelete above, how we have checked the request for some
+	// form of auth. This could be done here instead, but if it is done once
+	// above, it means the request is valid here too.
+	return nil
+}
+
+// AfterAPIDelete is called after Delete, and is useful for logging or triggering
+// notifications, etc. after the data is deleted frm the database, etc.
+func (s *Song) AfterAPIDelete(res http.ResponseWriter, req *http.Request) error {
+	addr := req.RemoteAddr
+	log.Println("Song deleted by:", addr, "id:", req.URL.Query().Get("id"))
+
+	return nil
+}
diff --git a/examples/updateable/README.md b/examples/updateable/README.md
index 1cc50f8..06f4188 100644
--- a/examples/updateable/README.md
+++ b/examples/updateable/README.md
@@ -23,8 +23,8 @@ See the file `content/song.go` and read the comments to understand the various
 methods needed to satisfy required interfaces for this kind of activity.
 
 ### Overview
-1. Implement `api.Updateable` with the `AcceptUpdate(http.ResponseWriter, *http.Request)` method to allow outside POST requests. 
-2. Consistent with the externalable example, authentication can be validated in `BeforeAcceptUdate(http.ResponseWriter, *http.Request)`
+1. Implement `api.Updateable` with the `Update(http.ResponseWriter, *http.Request)` method to allow outside POST requests. 
+2. Consistent with the createable example, authentication can be validated in `BeforeAPIUpdate(http.ResponseWriter, *http.Request)`
 
 There are various validation and request checks shown in this example as well. 
 Please feel free to modify and submit a PR for updates or bug fixes!
diff --git a/examples/updateable/content/song.go b/examples/updateable/content/song.go
index 1ebe232..947821c 100644
--- a/examples/updateable/content/song.go
+++ b/examples/updateable/content/song.go
@@ -79,10 +79,10 @@ func init() {
 // String defines the display name of a Song in the CMS list-view
 func (s *Song) String() string { return s.Title }
 
-// BeforeAcceptUpdate is only called if the Song type implements api.Updateable
-// It is called before AcceptUpdate, and returning an error will cancel the request
+// BeforeAPIUpdate is only called if the Song type implements api.Updateable
+// It is called before Update, and returning an error will cancel the request
 // causing the system to reject the data sent in the POST
-func (s *Song) BeforeAcceptUpdate(res http.ResponseWriter, req *http.Request) error {
+func (s *Song) BeforeAPIUpdate(res http.ResponseWriter, req *http.Request) error {
 	// do initial user authentication here on the request, checking for a
 	// token or cookie, or that certain form fields are set and valid
 
@@ -94,16 +94,16 @@ func (s *Song) BeforeAcceptUpdate(res http.ResponseWriter, req *http.Request) er
 	}
 
 	// you could then to data validation on the request post form, or do it in
-	// the Accept method, which is called after BeforeAccept
+	// the Update method, which is called after BeforeAPIUpdate
 
 	return nil
 }
 
-// AcceptUpdate is called after BeforeAccept and is where you may influence the
+// Update is called after BeforeAPIUpdate and is where you may influence the
 // merge process.  For example, maybe you don't want an empty string for the Title
 // or Artist field to be accepted by the update request.  Updates will always merge
 // with existing values, but by default will accept zero value as an update if sent.
-func (s *Song) AcceptUpdate(res http.ResponseWriter, req *http.Request) error {
+func (s *Song) Update(res http.ResponseWriter, req *http.Request) error {
 	addr := req.RemoteAddr
 	log.Println("Song update sent by:", addr, "id:", req.URL.Query().Get("id"))
 
@@ -129,11 +129,11 @@ func (s *Song) AcceptUpdate(res http.ResponseWriter, req *http.Request) error {
 	return nil
 }
 
-// AfterAcceptUpdate is called after AcceptUpdate, and is useful for logging or triggering
+// AfterAPIUpdate is called after Update, and is useful for logging or triggering
 // notifications, etc. after the data is saved to the database, etc.
 // The request has a context containing the databse 'target' affected by the
 // request.
-func (s *Song) AfterAcceptUpdate(res http.ResponseWriter, req *http.Request) error {
+func (s *Song) AfterAPIUpdate(res http.ResponseWriter, req *http.Request) error {
 	addr := req.RemoteAddr
 	log.Println("Song updated by:", addr, "id:", req.URL.Query().Get("id"))