支持分类查询 category

api/graphql.go

@@ -81,7 +81,7 @@ func NewSchema(config Config) (graphql.Schema, error) {
 	// 文章的可选字段
 	article = graphql.NewObject(graphql.ObjectConfig{
 		Name:        "Article",
-		Description: "文章信息",
+		Description: "文章",
 		Fields: graphql.Fields{
 			"id":          &graphql.Field{Type: graphql.Int, Description: "文章ID"},
 			"title":       &graphql.Field{Type: graphql.String, Description: "文章标题"},
@@ -92,6 +92,26 @@ func NewSchema(config Config) (graphql.Schema, error) {
 		},
 	})
 
+	category := graphql.NewObject(graphql.ObjectConfig{
+		Name:        "Category",
+		Description: "分类",
+		Fields: graphql.Fields{
+			"id":          &graphql.Field{Type: graphql.Int, Description: "分类ID"},
+			"title":       &graphql.Field{Type: graphql.String, Description: "分类标题"},
+			"keyword":     &graphql.Field{Type: graphql.String, Description: "分类关键词"},
+			"parent_id":   &graphql.Field{Type: graphql.Int, Description: "分类父级ID"},
+			"create_time": &graphql.Field{Type: graphql.DateTime, Description: "分类创建时间"},
+			"update_time": &graphql.Field{Type: graphql.DateTime, Description: "分类更新时间"},
+			"status":      &graphql.Field{Type: graphql.Int, Description: "分类状态"},
+			"content":     &graphql.Field{Type: graphql.String, Description: "分类内容"},
+			"sort":        &graphql.Field{Type: graphql.Int, Description: "分类排序"},
+			"image":       &graphql.Field{Type: graphql.String, Description: "分类图片"},
+			"image_num":   &graphql.Field{Type: graphql.Int, Description: "分类图片数量"},
+			"article_num": &graphql.Field{Type: graphql.Int, Description: "分类文章数量"},
+		},
+	})
+	fmt.Println(category)
+
 	// 图像中的文字提取
 	text = graphql.NewObject(graphql.ObjectConfig{
 		Name:        "Text",
@@ -106,7 +126,7 @@ func NewSchema(config Config) (graphql.Schema, error) {
 	// 图像的可选字段
 	image := graphql.NewObject(graphql.ObjectConfig{
 		Name:        "Image",
-		Description: "图像信息",
+		Description: "图像",
 		Fields: graphql.Fields{
 			"id":                      &graphql.Field{Type: graphql.Int, Description: "图像ID"},
 			"width":                   &graphql.Field{Type: graphql.Int, Description: "图像宽度"},
@@ -180,6 +200,76 @@ func NewSchema(config Config) (graphql.Schema, error) {
 	}
 
 	schema, err := graphql.NewSchema(graphql.SchemaConfig{Query: graphql.NewObject(graphql.ObjectConfig{Name: "RootQuery", Fields: graphql.Fields{
+		"categorys": &graphql.Field{
+			Name:        "categorys",
+			Description: "分类列表",
+			Type: graphql.NewObject(graphql.ObjectConfig{
+				Name:        "CategoryConnection",
+				Description: "条件筛选分类列表",
+				Fields: graphql.Fields{
+					"list":  &graphql.Field{Type: graphql.NewList(category), Description: "分类列表"},
+					"total": &graphql.Field{Type: graphql.Int, Description: "分类总数"},
+				},
+			}),
+			Args: graphql.FieldConfigArgument{
+				"id":          &graphql.ArgumentConfig{Type: graphql.Int, Description: "筛选分类中指定ID的"},
+				"title":       &graphql.ArgumentConfig{Type: graphql.String, Description: "筛选分类中含有指定标题的"},
+				"keyword":     &graphql.ArgumentConfig{Type: graphql.String, Description: "筛选分类中含有指定关键词的"},
+				"parent_id":   &graphql.ArgumentConfig{Type: graphql.Int, Description: "筛选分类中含有指定父级ID的"},
+				"create_time": &graphql.ArgumentConfig{Type: graphql.DateTime, Description: "筛选分类中创建时间等于指定值的"},
+				"update_time": &graphql.ArgumentConfig{Type: graphql.DateTime, Description: "筛选分类中更新时间等于指定值的"},
+				"first":       &graphql.ArgumentConfig{Type: graphql.Int, Description: "翻页参数(傳回清單中的前n個元素)"},
+				"last":        &graphql.ArgumentConfig{Type: graphql.Int, Description: "翻页参数(傳回清單中的最後n個元素)"},
+				"after":       &graphql.ArgumentConfig{Type: graphql.String, Description: "翻页参数(傳回清單中指定遊標之後的元素)"},
+				"before":      &graphql.ArgumentConfig{Type: graphql.String, Description: "翻页参数(傳回清單中指定遊標之前的元素)"},
+			},
+			Resolve: func(p graphql.ResolveParams) (interface{}, error) {
+				var categorys []Category
+				var total int
+				var err error
+
+				// 获取筛选条件
+				var category Category
+				mapstructure.Decode(p.Args, &category)
+
+				// 获取翻页参数
+				var first, last int
+				var after, before string
+				if p.Args["first"] != nil {
+					first = p.Args["first"].(int)
+				}
+				if p.Args["last"] != nil {
+					last = p.Args["last"].(int)
+				}
+				if p.Args["after"] != nil {
+					after = p.Args["after"].(string)
+				}
+				if p.Args["before"] != nil {
+					before = p.Args["before"].(string)
+				}
+
+				fmt.Println(first, last, after, before)
+
+				// 获取请求的字段
+				fields := strings.Join(get_fields(p.Info.FieldASTs[0].SelectionSet.Selections), ",")
+
+				// 筛选条件
+				where_str := ""
+
+				// 查询分类列表
+				var query strings.Builder
+				query.WriteString(fmt.Sprintf("SELECT %s FROM web_article %s LIMIT %d OFFSET %d", fields, where_str, 10, 0))
+				if err := connection.Select(&categorys, query.String()); err != nil {
+					fmt.Println("查询分类列表失败", err)
+					return nil, err
+				}
+
+				return map[string]interface{}{
+					"list":  categorys,
+					"total": total,
+				}, err
+			},
+		},
 		"users": &graphql.Field{
 			Name:        "users",
 			Description: "用户列表",

api/struct.go

@@ -125,6 +125,21 @@ type Article struct {
 	UpdateTime time.Time `json:"update_time" db:"update_time"`
 }
 
+type Category struct {
+	ID         int
+	Title      string
+	Keyword    string
+	ParentID   int
+	CreateTime time.Time
+	UpdateTime time.Time
+	Status     int
+	Content    string
+	Sort       int
+	Image      string
+	ImageNum   int
+	ArticleNum int
+}
+
 // 输入配置
 type ConfigMysql struct {
 	Host     string
@@ -133,6 +148,7 @@ type ConfigMysql struct {
 	UserName string
 	Password string
 }
+
 type Config struct {
 	Mysql ConfigMysql
 }