Complete first iteration of question/answer MVC

orm/answer.go

@@ -1,8 +1,10 @@
 package orm
 
 import (
-	"github.com/jinzhu/gorm"
 	"net/http"
+
+	"git.andreafazzi.eu/andrea/oef/renderer"
+	"github.com/jinzhu/gorm"
 )
 
 type Answer struct {
@@ -11,7 +13,11 @@ type Answer struct {
 	Text    string
 	Correct bool
 
-	QuestionID uint
+	Question   *Question
+	QuestionID uint `schema:"question_id"`
+
+	AllQuestions []*Question     `gorm:"-"`
+	Selected     map[uint]string `gorm:"-"`
 }
 
 func (a *Answer) GetID() uint { return a.ID }
@@ -21,11 +27,37 @@ func (a *Answer) String() string {
 }
 
 func (a *Answer) Create(args map[string]string, r *http.Request) (interface{}, error) {
-	return nil, nil
+	if r.Method == "GET" {
+		answer := new(Answer)
+		if err := DB().Find(&answer.AllQuestions).Error; err != nil {
+			return nil, err
+		}
+
+		return answer, nil
+	} else {
+		answer := new(Answer)
+		err := renderer.Decode(answer, r)
+		if err != nil {
+			return nil, err
+		}
+		answer, err = CreateAnswer(answer)
+		if err != nil {
+			return nil, err
+		}
+		return answer, nil
+	}
 }
 
 func (a *Answer) Read(args map[string]string, r *http.Request) (interface{}, error) {
-	return nil, nil
+	var answer Answer
+
+	id := args["id"]
+
+	if err := DB().Preload("Question").First(&answer, id).Error; err != nil {
+		return nil, err
+	}
+
+	return &answer, nil
 }
 
 func (a *Answer) ReadAll(args map[string]string, r *http.Request) (interface{}, error) {
@@ -37,9 +69,57 @@ func (a *Answer) ReadAll(args map[string]string, r *http.Request) (interface{},
 }
 
 func (a *Answer) Update(args map[string]string, r *http.Request) (interface{}, error) {
-	return nil, nil
+	if r.Method == "GET" {
+		result, err := a.Read(args, r)
+		if err != nil {
+			return nil, err
+		}
+
+		answer := result.(*Answer)
+
+		if err := DB().Find(&answer.AllQuestions).Error; err != nil {
+			return nil, err
+		}
+
+		answer.Selected = make(map[uint]string)
+		answer.Selected[answer.QuestionID] = "selected"
+
+		return answer, nil
+	} else {
+		answer, err := a.Read(args, nil)
+		if err != nil {
+			return nil, err
+		}
+		err = renderer.Decode(answer, r)
+		if err != nil {
+			return nil, err
+		}
+		_, err = SaveAnswer(answer)
+		if err != nil {
+			return nil, err
+		}
+		answer, err = a.Read(args, nil)
+		if err != nil {
+			return nil, err
+		}
+		return answer.(*Answer), nil
+	}
 }
 
 func (a *Answer) Delete(args map[string]string, r *http.Request) (interface{}, error) {
 	return nil, nil
 }
+
+func CreateAnswer(answer *Answer) (*Answer, error) {
+	if err := DB().Create(answer).Error; err != nil {
+		return nil, err
+	}
+	return answer, nil
+}
+
+func SaveAnswer(answer interface{}) (interface{}, error) {
+	if err := DB().Omit("Answers").Save(answer).Error; err != nil {
+		return nil, err
+	}
+	return answer, nil
+}

orm/question.go

@@ -11,6 +11,8 @@ type Question struct {
 	gorm.Model
 
 	Text string
+
+	Answers []*Answer
 }
 
 func (q *Question) GetID() uint { return q.ID }
@@ -37,7 +39,15 @@ func (q *Question) Create(args map[string]string, r *http.Request) (interface{},
 }
 
 func (q *Question) Read(args map[string]string, r *http.Request) (interface{}, error) {
-	return nil, nil
+	var question Question
+
+	id := args["id"]
+
+	if err := DB().Preload("Answers").Where("id = ?", id).Find(&question).Error; err != nil {
+		return nil, err
+	}
+
+	return &question, nil
 }
 
 func (q *Question) ReadAll(args map[string]string, r *http.Request) (interface{}, error) {
@@ -49,7 +59,27 @@ func (q *Question) ReadAll(args map[string]string, r *http.Request) (interface{}
 }
 
 func (q *Question) Update(args map[string]string, r *http.Request) (interface{}, error) {
-	return nil, nil
+	if r.Method == "GET" {
+		return q.Read(args, r)
+	} else {
+		question, err := q.Read(args, nil)
+		if err != nil {
+			return nil, err
+		}
+		err = renderer.Decode(question, r)
+		if err != nil {
+			return nil, err
+		}
+		_, err = SaveQuestion(question)
+		if err != nil {
+			return nil, err
+		}
+		question, err = q.Read(args, nil)
+		if err != nil {
+			return nil, err
+		}
+		return question.(*Question), nil
+	}
 }
 
 func (q *Question) Delete(args map[string]string, r *http.Request) (interface{}, error) {
@@ -62,3 +92,10 @@ func CreateQuestion(question *Question) (*Question, error) {
 	}
 	return question, nil
 }
+
+func SaveQuestion(question interface{}) (interface{}, error) {
+	if err := DB().Omit("Answers").Save(question).Error; err != nil {
+		return nil, err
+	}
+	return question, nil
+}

renderer/funcmap.go

@@ -13,6 +13,10 @@ import (
 	yml "gopkg.in/yaml.v2"
 )
 
+const (
+	MaxTextLength = 20
+)
+
 var (
 	funcMap = template.FuncMap{
 		"query":       query,
@@ -39,9 +43,18 @@ var (
 		"active":      active,
 		"pluralize":   pluralize,
 		"lower":       lower,
+		"trim":        trim,
 	}
 )
 
+func trim(text string) string {
+	var result string
+	if len(text) > MaxTextLength {
+		result = text[0:MaxTextLength]
+	}
+	return result + "…"
+}
+
 func modelName(value interface{}) string {
 	t := reflect.TypeOf(value)
 	switch t.Kind() {

renderer/renderer.go

@@ -229,7 +229,7 @@ func (rend *HTMLRenderer) writeError(w http.ResponseWriter, r *http.Request, dat
 	log.Println(data.(*htmlTemplateData).Data.(error))
 
 	w.Header().Set("Content-Type", "text/html; charset=utf-8")
-	e := t.ExecuteTemplate(w, "base", data)
+	e := t.ExecuteTemplate(w, "error", data)
 	if e != nil {
 		panic(e)
 	}
@@ -237,17 +237,17 @@ func (rend *HTMLRenderer) writeError(w http.ResponseWriter, r *http.Request, dat
 
 func (rend *HTMLRenderer) Render(w http.ResponseWriter, r *http.Request, data interface{}, options ...url.Values) {
 	if data != nil && isErrorType(data) {
-		rend.writeError(w, r, &htmlTemplateData{data.(error), options[0]})
+		rend.writeError(w, r, &htmlTemplateData{data.(error), nil})
 	} else {
 		t, ok := rend.templates[options[0]["tpl_content"][0]]
 		if !ok {
 			err := fmt.Errorf("Template %s not found", options[0]["tpl_content"][0])
-			rend.writeError(w, r, &htmlTemplateData{err, options[0]})
+			rend.writeError(w, r, &htmlTemplateData{err, nil})
 		}
 		w.Header().Set("Content-Type", "text/html; charset=utf-8")
 		err := t.ExecuteTemplate(w, options[0]["tpl_layout"][0], &htmlTemplateData{data, options[0]})
 		if err != nil {
-			rend.writeError(w, r, &htmlTemplateData{err, options[0]})
+			rend.writeError(w, r, &htmlTemplateData{err, nil})
 		}
 	}
 }

template_generator/templates/add_update.tpl

@@ -19,6 +19,9 @@
   role="form"
 {{"  id={{$form}}>"}}
 
+{{"  {{$options := ` { cancelTitle: \"Annulla\", saveTitle: \"Salva\", model: "}}"{{.Model}}"{{" `}} "}}
+{{"  {{template \"submit_cancel_buttons\" dict \"options\" ($options|yaml) \"id\" (.Data|field \"ID\") \"update\" $update}} "}}
+
   </form>
   
 </div>

template_generator/templates/show.tpl

@@ -2,62 +2,26 @@
 
 <div class="container">
 
-  <nav aria-label="breadcrumb">
+{{"  {{template \"breadcrumb\" toSlice \"ELEMENTS\" (all "}}"{{.Model}}"){{" (.Data|string) \"current\"}}"}}
-    <ol class="breadcrumb">
+{{"  {{template \"show_header\" dict \"title\" (.Data|string) \"updatePath\" (.Data.ID|update "}} "{{.Model}}"){{" \"deletePath\" (.Data.ID|delete "}}"{{.Model}}"){{ "}}" }}
-      <li class="breadcrumb-item"><a href="/{{.Models}}?{{"{{query \"tpl_layout\" \"base\" \"tpl_content\" "}}"{{.Models}}"}}">{{.Models}}</a></li>
-      <li class="breadcrumb-item active"><a href="#">{{"{{.Data.Name}}"}}</a></li>
-    </ol>
-  </nav>
-
-  <div class="karmen-info-header">
-    <div class="row">
-      <div class="col-md-8">
-	<h1>{{"{{.Data.Name}}"}}</h1>
-      </div>
-      <div class="col-md-4">
-
-	<div class="btn-group pull-right" role="group">
-	  <a href="/{{.Models}}/add/?{{"{{query \"tpl_layout\" \"base\" \"tpl_content\" "}}"{{.Models}}_add_update"}}" class="btn btn-success">
-	    <span class="glyphicon glyphicon-pencil" aria-hidden="true"></span>
-	    Crea
-	  </a>
-
-	  <a href="/{{.Models}}/{{"{{.Data.ID}}"}}/update?{{"{{query \"tpl_layout\" \"base\" \"tpl_content\" "}}"{{.Models}}_add_update" "update" "true"}}"  class="btn btn-primary">
-	    <span class="glyphicon glyphicon-pencil" aria-hidden="true"></span>
-	    Modifica
-	  </a>
-	  <button href="/{{.Models}}/{{"{{.Data.ID}}"}}/delete"
-		  data-url="/{{.Models}}/{{"{{.Data.ID}}"}}/delete"
-		  class="btn btn-danger karmen-ajax-delete">
-	    <span class="glyphicon glyphicon-trash" aria-hidden="true"></span>
-	    Elimina
-	  </button>
-	</div>
-
-      </div>
-    </div>
-  </div>
 
+  <h2 class="karmen-relation-header">GENERAL SECTION</h2>
+  
   <div class="row">
     <div class="col-md-12">
-      
-      <h2 class="karmen-relation-header">sub items</h2>
-      {{"{{if .Data.Items}}"}}
-      <div class="list-group" id="materie_list_group">
-    	<a href="{{"/subjects/{{.Data.Subject.ID}}?{{query \"tpl_layout\" \"base\" \"tpl_content\" \"subjects_show\"}}"}}" class="list-group-item clearfix">
-    	  <span class="glyphicon glyphicon-book"></span>
-    	  {{"{{.Data.Subject.Name}}"}}
-    	</a>
-      </div>
-      {{"{{else}}"}}
-      <p>All'attività non è associata alcuna materia
-    	didattica. Clicca <a href="{{"/activities/update?{{query \"tpl_layout\" \"base\" \"tpl_content\" \"activities_add_update\"}}"}}">qui</a> per
-    	modificare questa attività didattica.</p>
-      {{"{{end}}"}}
-    </div>
-    
-  </div>
 
+{{"      {{$options := `"}}
+{{"      title: \"RELATIONS\""}}
+{{"      model: \"MODEL\""}}
+{{"      icon: \"ICON_CLASS\""}}
+{{"      `}}"}}
+      
+{{"      {{$noElements := \"NO ELEMENTS\"}}"}}
+{{"      {{template \"relation_list\" dict \"options\" ($options|yaml) \"data\" .Data.RELATIONS \"noElements\" $noElements}} "}}
+    
+    </div>
+  </div>
+  
 </div>    
 
 {{"{{ end }}"}}

templates/answers.html.tpl

@@ -16,7 +16,7 @@
   <div class="list-group" id="myUL"> 
   {{range $element := .Data}} 
   <a class="list-group-item list-group-item-action" href={{$element.ID|show "Answer"}}>
-   <span class="fa fa-user"></span> 
+   <span class="fa fa-reply"></span> 
    {{$element|string}} 
    <div class="text-right"> 
      {{$options := `noElements: "no subelements"`}} 

templates/answers_add_update.html.tpl

@@ -5,12 +5,12 @@
 
 {{if $update}}
 
-{{template "breadcrumb" toSlice "Answers" (all "Answer") (.Data|string) (.Data.ID|show "Answer") "Aggiorna" "current"}}
+{{template "breadcrumb" toSlice "Risposte" (all "Answer") (.Data|string) (.Data.ID|show "Answer") "Aggiorna" "current"}}
 {{else}}
-{{template "breadcrumb" toSlice "Answers" (all "Answer") "Aggiungi" "current"}}
+{{template "breadcrumb" toSlice "Risposte" (all "Answer") "Aggiungi" "current"}}
 {{end}}
 
-{{template "add_update_header" dict "update" $update "addTitle" "Crea nuovo ELEMENTO" "updateTitle" (printf "Aggiorna ELEMENTO %s" (.Data|string))}}
+{{template "add_update_header" dict "update" $update "addTitle" "Crea nuova risposta" "updateTitle" (printf "Aggiorna risposta %s" (.Data|string|trim))}}
 {{$form := "form_add_update"}}
 <form
   class="needs-validation"
@@ -19,6 +19,15 @@
   role="form"
   id={{$form}}>
 
+  {{$options := ` { name: "Text",id: "answer_text",label: "Testo della risposta",placeholder: "Inserire il testo della risposta",type: "text",required: "true"} `}}
+  {{template "input" dict "options" ($options|yaml) "value" (.Data|field "Text") "update" $update}}
+
+  {{$options := ` { name: "question_id", id: "question_id", label: "Domanda relativa a questa risposta", title: "Seleziona la domanda"}`}}
+  {{template "select" dict "options" ($options|yaml) "data" (.Data|field "AllQuestions") "selected" (.Data|field "Selected") "update" $update "form" $form}}
+
+  {{$options := ` { cancelTitle: "Annulla", saveTitle: "Salva", model: "Answer"} `}}
+  {{template "submit_cancel_buttons" dict "options" ($options|yaml) "id" (.Data|field "ID") "update" $update}}
+
   </form>
   
 </div>

templates/answers_show.html.tpl

@@ -2,62 +2,28 @@
 
 <div class="container">
 
-  <nav aria-label="breadcrumb">
+  {{template "breadcrumb" toSlice "Risposte" (all "Answer") (.Data|string|trim) "current"}}
-    <ol class="breadcrumb">
+  {{template "show_header" dict "title" (.Data|string|trim) "updatePath" (.Data.ID|update  "Answer") "deletePath" (.Data.ID|delete "Answer")}}
-      <li class="breadcrumb-item"><a href="/Answers?{{query "tpl_layout" "base" "tpl_content" "Answers"}}">Answers</a></li>
-      <li class="breadcrumb-item active"><a href="#">{{.Data.Name}}</a></li>
-    </ol>
-  </nav>
-
-  <div class="karmen-info-header">
-    <div class="row">
-      <div class="col-md-8">
-	<h1>{{.Data.Name}}</h1>
-      </div>
-      <div class="col-md-4">
-
-	<div class="btn-group pull-right" role="group">
-	  <a href="/Answers/add/?{{query "tpl_layout" "base" "tpl_content" "Answers_add_update"}}" class="btn btn-success">
-	    <span class="glyphicon glyphicon-pencil" aria-hidden="true"></span>
-	    Crea
-	  </a>
-
-	  <a href="/Answers/{{.Data.ID}}/update?{{query "tpl_layout" "base" "tpl_content" "Answers_add_update" "update" "true"}}"  class="btn btn-primary">
-	    <span class="glyphicon glyphicon-pencil" aria-hidden="true"></span>
-	    Modifica
-	  </a>
-	  <button href="/Answers/{{.Data.ID}}/delete"
-		  data-url="/Answers/{{.Data.ID}}/delete"
-		  class="btn btn-danger karmen-ajax-delete">
-	    <span class="glyphicon glyphicon-trash" aria-hidden="true"></span>
-	    Elimina
-	  </button>
-	</div>
-
-      </div>
-    </div>
-  </div>
 
+  <h2 class="karmen-relation-header">Testo della risposta</h2>
+  <p>
+    {{.Data.Text}}
+  </p>
   <div class="row">
     <div class="col-md-12">
-      
-      <h2 class="karmen-relation-header">sub items</h2>
-      {{if .Data.Items}}
-      <div class="list-group" id="materie_list_group">
-    	<a href="/subjects/{{.Data.Subject.ID}}?{{query "tpl_layout" "base" "tpl_content" "subjects_show"}}" class="list-group-item clearfix">
-    	  <span class="glyphicon glyphicon-book"></span>
-    	  {{.Data.Subject.Name}}
-    	</a>
-      </div>
-      {{else}}
-      <p>All'attività non è associata alcuna materia
-    	didattica. Clicca <a href="/activities/update?{{query "tpl_layout" "base" "tpl_content" "activities_add_update"}}">qui</a> per
-    	modificare questa attività didattica.</p>
-      {{end}}
-    </div>
-    
-  </div>
 
+      {{$options := `
+      title: "Domanda relativa alla risposta"
+      model: "Question"
+      icon: "fa fa-question-circle"
+      `}}
+      
+      {{$noElements := "nessuna domanda relativa a questa risposta"}}
+      {{template "relation_list" dict "options" ($options|yaml) "data" .Data.Question "noElements" $noElements}} 
+    
+    </div>
+  </div>
+  
 </div>    
 
 {{ end }}

templates/error.html.tpl

@@ -1,10 +1,9 @@
 {{ define "content" }}
-
 <div class="container">
 
   <h1>Errore</h1>
   <p>
-    {{.}}
+    {{.Data}}
   </p>
     
 </div>

templates/layout/error.html.tpl

@@ -0,0 +1,32 @@
+{{define "error"}}
+<!DOCTYPE html>
+<html lang="it">
+  <head>
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="stylesheet" href="/styles.css" />
+    <title>Olimpiadi di Economia e Finanza - Piattaforma di gara</title>
+  </head>
+  
+  <body>
+    
+    <nav class="navbar navbar-expand-lg fixed-top navbar-dark bg-primary">
+      <a class="navbar-brand" href="/teachers?{{query "tpl_layout" "base" "tpl_content" "teachers"}}">
+	<span class="fa fa-landmark"></span>
+	OEF 2020
+      </a>
+      <button type="button" class="navbar-toggler" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+    </nav>
+
+    <div class="base-template">
+      {{ template "content" . }}
+    </div>
+
+    <script src="/main.bundle.js"></script>
+    
+  </body>
+</html>
+{{end}}

templates/questions_add_update.html.tpl

@@ -10,7 +10,7 @@
 {{template "breadcrumb" toSlice "Domande" (all "Question") "Aggiungi" "current"}}
 {{end}}
 
-{{template "add_update_header" dict "update" $update "addTitle" "Crea nuova domanda" "updateTitle" (printf "Aggiorna domanda %s" (.Data|string))}}
+{{template "add_update_header" dict "update" $update "addTitle" "Crea nuova domanda" "updateTitle" (printf "Aggiorna domanda \"%s\"" (.Data|string|trim))}}
 {{$form := "form_add_update"}}
 <form
   class="needs-validation"

templates/questions_show.html.tpl

@@ -2,62 +2,27 @@
 
 <div class="container">
 
-  <nav aria-label="breadcrumb">
+  {{template "breadcrumb" toSlice "Domande" (all "Question") (.Data|string|trim) "current"}}
-    <ol class="breadcrumb">
+  {{template "show_header" dict "title" (.Data|string|trim) "updatePath" (.Data.ID|update  "Question") "deletePath" (.Data.ID|delete "Question")}}
-      <li class="breadcrumb-item"><a href="/Questions?{{query "tpl_layout" "base" "tpl_content" "Questions"}}">Questions</a></li>
-      <li class="breadcrumb-item active"><a href="#">{{.Data.Name}}</a></li>
-    </ol>
-  </nav>
-
-  <div class="karmen-info-header">
-    <div class="row">
-      <div class="col-md-8">
-	<h1>{{.Data.Name}}</h1>
-      </div>
-      <div class="col-md-4">
-
-	<div class="btn-group pull-right" role="group">
-	  <a href="/Questions/add/?{{query "tpl_layout" "base" "tpl_content" "Questions_add_update"}}" class="btn btn-success">
-	    <span class="glyphicon glyphicon-pencil" aria-hidden="true"></span>
-	    Crea
-	  </a>
-
-	  <a href="/Questions/{{.Data.ID}}/update?{{query "tpl_layout" "base" "tpl_content" "Questions_add_update" "update" "true"}}"  class="btn btn-primary">
-	    <span class="glyphicon glyphicon-pencil" aria-hidden="true"></span>
-	    Modifica
-	  </a>
-	  <button href="/Questions/{{.Data.ID}}/delete"
-		  data-url="/Questions/{{.Data.ID}}/delete"
-		  class="btn btn-danger karmen-ajax-delete">
-	    <span class="glyphicon glyphicon-trash" aria-hidden="true"></span>
-	    Elimina
-	  </button>
-	</div>
-
-      </div>
-    </div>
-  </div>
 
+  <h2 class="karmen-relation-header">Testo della domanda</h2>
+  <p>{{.Data.Text}}</p>
+  
   <div class="row">
     <div class="col-md-12">
-      
-      <h2 class="karmen-relation-header">sub items</h2>
-      {{if .Data.Items}}
-      <div class="list-group" id="materie_list_group">
-    	<a href="/subjects/{{.Data.Subject.ID}}?{{query "tpl_layout" "base" "tpl_content" "subjects_show"}}" class="list-group-item clearfix">
-    	  <span class="glyphicon glyphicon-book"></span>
-    	  {{.Data.Subject.Name}}
-    	</a>
-      </div>
-      {{else}}
-      <p>All'attività non è associata alcuna materia
-    	didattica. Clicca <a href="/activities/update?{{query "tpl_layout" "base" "tpl_content" "activities_add_update"}}">qui</a> per
-    	modificare questa attività didattica.</p>
-      {{end}}
-    </div>
-    
-  </div>
 
+      {{$options := `
+      title: "Risposte alla domanda"
+      model: "Answer"
+      icon: "fa fa-reply"
+      `}}
+      
+      {{$noElements := "Alla domanda non è associata alcuna risposta."}}
+      {{template "relation_list" dict "options" ($options|yaml) "data" .Data.Answers "noElements" $noElements}} 
+    
+    </div>
+  </div>
+  
 </div>    
 
 {{ end }}