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Merge branch 'master' into fix-example-err
2 parents f7f76d6 + dd05d5e commit 5088e2a

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-180
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3 files changed

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‎examples/http-post/main.go

Lines changed: 76 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,76 @@
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package main
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import (
4+
"encoding/json"
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"fmt"
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"net/http"
7+
8+
"github.com/graphql-go/graphql"
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"github.com/graphql-go/graphql/examples/todo/schema"
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)
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type postData struct {
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Query string `json:"query"`
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Operation string `json:"operation"`
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Variables map[string]interface{} `json:"variables"`
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}
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func main() {
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http.HandleFunc("/graphql", func(w http.ResponseWriter, req *http.Request) {
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var p postData
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if err := json.NewDecoder(req.Body).Decode(&p); err != nil {
22+
w.WriteHeader(400)
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return
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}
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result := graphql.Do(graphql.Params{
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Context: req.Context(),
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Schema: schema.TodoSchema,
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RequestString: p.Query,
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VariableValues: p.Variables,
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OperationName: p.Operation,
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})
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if err := json.NewEncoder(w).Encode(result); err != nil {
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fmt.Printf("could not write result to response: %s", err)
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}
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})
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fmt.Println("Now server is running on port 8080")
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fmt.Println("")
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fmt.Println(`Get single todo:
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curl \
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-X POST \
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-H "Content-Type: application/json" \
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--data '{ "query": "{ todo(id:\"b\") { id text done } }" }' \
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http://localhost:8080/graphql`)
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fmt.Println("")
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fmt.Println(`Create new todo:
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curl \
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-X POST \
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-H "Content-Type: application/json" \
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--data '{ "query": "mutation { createTodo(text:\"My New todo\") { id text done } }" }' \
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http://localhost:8080/graphql`)
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fmt.Println("")
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fmt.Println(`Update todo:
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curl \
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-X POST \
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-H "Content-Type: application/json" \
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--data '{ "query": "mutation { updateTodo(id:\"a\", done: true) { id text done } }" }' \
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http://localhost:8080/graphql`)
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fmt.Println("")
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fmt.Println(`Load todo list:
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curl \
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-X POST \
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-H "Content-Type: application/json" \
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--data '{ "query": "{ todoList { id text done } }" }' \
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http://localhost:8080/graphql`)
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http.ListenAndServe(":8080", nil)
76+
}

‎examples/todo/main.go

Lines changed: 6 additions & 180 deletions
Original file line numberDiff line numberDiff line change
@@ -8,192 +8,18 @@ import (
88
"time"
99

1010
"github.com/graphql-go/graphql"
11+
"github.com/graphql-go/graphql/examples/todo/schema"
1112
)
1213

13-
type Todo struct {
14-
ID string `json:"id"`
15-
Text string `json:"text"`
16-
Done bool `json:"done"`
17-
}
18-
19-
var TodoList []Todo
20-
var letterRunes = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
21-
22-
func RandStringRunes(n int) string {
23-
b := make([]rune, n)
24-
for i := range b {
25-
b[i] = letterRunes[rand.Intn(len(letterRunes))]
26-
}
27-
return string(b)
28-
}
29-
3014
func init() {
31-
todo1 := Todo{ID: "a", Text: "A todo not to forget", Done: false}
32-
todo2 := Todo{ID: "b", Text: "This is the most important", Done: false}
33-
todo3 := Todo{ID: "c", Text: "Please do this or else", Done: false}
34-
TodoList = append(TodoList, todo1, todo2, todo3)
15+
todo1 := schema.Todo{ID: "a", Text: "A todo not to forget", Done: false}
16+
todo2 := schema.Todo{ID: "b", Text: "This is the most important", Done: false}
17+
todo3 := schema.Todo{ID: "c", Text: "Please do this or else", Done: false}
18+
schema.TodoList = append(schema.TodoList, todo1, todo2, todo3)
3519

3620
rand.Seed(time.Now().UnixNano())
3721
}
3822

39-
// define custom GraphQL ObjectType `todoType` for our Golang struct `Todo`
40-
// Note that
41-
// - the fields in our todoType maps with the json tags for the fields in our struct
42-
// - the field type matches the field type in our struct
43-
var todoType = graphql.NewObject(graphql.ObjectConfig{
44-
Name: "Todo",
45-
Fields: graphql.Fields{
46-
"id": &graphql.Field{
47-
Type: graphql.String,
48-
},
49-
"text": &graphql.Field{
50-
Type: graphql.String,
51-
},
52-
"done": &graphql.Field{
53-
Type: graphql.Boolean,
54-
},
55-
},
56-
})
57-
58-
// root mutation
59-
var rootMutation = graphql.NewObject(graphql.ObjectConfig{
60-
Name: "RootMutation",
61-
Fields: graphql.Fields{
62-
/*
63-
curl -g 'http://localhost:8080/graphql?query=mutation+_{createTodo(text:"My+new+todo"){id,text,done}}'
64-
*/
65-
"createTodo": &graphql.Field{
66-
Type: todoType, // the return type for this field
67-
Description: "Create new todo",
68-
Args: graphql.FieldConfigArgument{
69-
"text": &graphql.ArgumentConfig{
70-
Type: graphql.NewNonNull(graphql.String),
71-
},
72-
},
73-
Resolve: func(params graphql.ResolveParams) (interface{}, error) {
74-
75-
// marshall and cast the argument value
76-
text, _ := params.Args["text"].(string)
77-
78-
// figure out new id
79-
newID := RandStringRunes(8)
80-
81-
// perform mutation operation here
82-
// for e.g. create a Todo and save to DB.
83-
newTodo := Todo{
84-
ID: newID,
85-
Text: text,
86-
Done: false,
87-
}
88-
89-
TodoList = append(TodoList, newTodo)
90-
91-
// return the new Todo object that we supposedly save to DB
92-
// Note here that
93-
// - we are returning a `Todo` struct instance here
94-
// - we previously specified the return Type to be `todoType`
95-
// - `Todo` struct maps to `todoType`, as defined in `todoType` ObjectConfig`
96-
return newTodo, nil
97-
},
98-
},
99-
/*
100-
curl -g 'http://localhost:8080/graphql?query=mutation+_{updateTodo(id:"a",done:true){id,text,done}}'
101-
*/
102-
"updateTodo": &graphql.Field{
103-
Type: todoType, // the return type for this field
104-
Description: "Update existing todo, mark it done or not done",
105-
Args: graphql.FieldConfigArgument{
106-
"done": &graphql.ArgumentConfig{
107-
Type: graphql.Boolean,
108-
},
109-
"id": &graphql.ArgumentConfig{
110-
Type: graphql.NewNonNull(graphql.String),
111-
},
112-
},
113-
Resolve: func(params graphql.ResolveParams) (interface{}, error) {
114-
// marshall and cast the argument value
115-
done, _ := params.Args["done"].(bool)
116-
id, _ := params.Args["id"].(string)
117-
affectedTodo := Todo{}
118-
119-
// Search list for todo with id and change the done variable
120-
for i := 0; i < len(TodoList); i++ {
121-
if TodoList[i].ID == id {
122-
TodoList[i].Done = done
123-
// Assign updated todo so we can return it
124-
affectedTodo = TodoList[i]
125-
break
126-
}
127-
}
128-
// Return affected todo
129-
return affectedTodo, nil
130-
},
131-
},
132-
},
133-
})
134-
135-
// root query
136-
// we just define a trivial example here, since root query is required.
137-
// Test with curl
138-
// curl -g 'http://localhost:8080/graphql?query={lastTodo{id,text,done}}'
139-
var rootQuery = graphql.NewObject(graphql.ObjectConfig{
140-
Name: "RootQuery",
141-
Fields: graphql.Fields{
142-
143-
/*
144-
curl -g 'http://localhost:8080/graphql?query={todo(id:"b"){id,text,done}}'
145-
*/
146-
"todo": &graphql.Field{
147-
Type: todoType,
148-
Description: "Get single todo",
149-
Args: graphql.FieldConfigArgument{
150-
"id": &graphql.ArgumentConfig{
151-
Type: graphql.String,
152-
},
153-
},
154-
Resolve: func(params graphql.ResolveParams) (interface{}, error) {
155-
156-
idQuery, isOK := params.Args["id"].(string)
157-
if isOK {
158-
// Search for el with id
159-
for _, todo := range TodoList {
160-
if todo.ID == idQuery {
161-
return todo, nil
162-
}
163-
}
164-
}
165-
166-
return Todo{}, nil
167-
},
168-
},
169-
170-
"lastTodo": &graphql.Field{
171-
Type: todoType,
172-
Description: "Last todo added",
173-
Resolve: func(params graphql.ResolveParams) (interface{}, error) {
174-
return TodoList[len(TodoList)-1], nil
175-
},
176-
},
177-
178-
/*
179-
curl -g 'http://localhost:8080/graphql?query={todoList{id,text,done}}'
180-
*/
181-
"todoList": &graphql.Field{
182-
Type: graphql.NewList(todoType),
183-
Description: "List of todos",
184-
Resolve: func(p graphql.ResolveParams) (interface{}, error) {
185-
return TodoList, nil
186-
},
187-
},
188-
},
189-
})
190-
191-
// define schema, with our rootQuery and rootMutation
192-
var schema, _ = graphql.NewSchema(graphql.SchemaConfig{
193-
Query: rootQuery,
194-
Mutation: rootMutation,
195-
})
196-
19723
func executeQuery(query string, schema graphql.Schema) *graphql.Result {
19824
result := graphql.Do(graphql.Params{
19925
Schema: schema,
@@ -207,7 +33,7 @@ func executeQuery(query string, schema graphql.Schema) *graphql.Result {
20733

20834
func main() {
20935
http.HandleFunc("/graphql", func(w http.ResponseWriter, r *http.Request) {
210-
result := executeQuery(r.URL.Query().Get("query"), schema)
36+
result := executeQuery(r.URL.Query().Get("query"), schema.TodoSchema)
21137
json.NewEncoder(w).Encode(result)
21238
})
21339
// Serve static files

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