完成课程资源Model

server/internal/course_resource/internal/model/courseresourcemodel.go

@@ -0,0 +1,29 @@
+package model
+
+import "github.com/zeromicro/go-zero/core/stores/sqlx"
+
+var _ CourseResourceModel = (*customCourseResourceModel)(nil)
+
+type (
+	// CourseResourceModel is an interface to be customized, add more methods here,
+	// and implement the added methods in customCourseResourceModel.
+	CourseResourceModel interface {
+		courseResourceModel
+		withSession(session sqlx.Session) CourseResourceModel
+	}
+
+	customCourseResourceModel struct {
+		*defaultCourseResourceModel
+	}
+)
+
+// NewCourseResourceModel returns a model for the database table.
+func NewCourseResourceModel(conn sqlx.SqlConn) CourseResourceModel {
+	return &customCourseResourceModel{
+		defaultCourseResourceModel: newCourseResourceModel(conn),
+	}
+}
+
+func (m *customCourseResourceModel) withSession(session sqlx.Session) CourseResourceModel {
+	return NewCourseResourceModel(sqlx.NewSqlConnFromSession(session))
+}

server/internal/course_resource/internal/model/courseresourcemodel_gen.go

@@ -0,0 +1,89 @@
+// Code generated by goctl. DO NOT EDIT.
+// versions:
+//  goctl version: 1.9.1
+
+package model
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"strings"
+
+	"github.com/zeromicro/go-zero/core/stores/builder"
+	"github.com/zeromicro/go-zero/core/stores/sqlx"
+	"github.com/zeromicro/go-zero/core/stringx"
+)
+
+var (
+	courseResourceFieldNames          = builder.RawFieldNames(&CourseResource{})
+	courseResourceRows                = strings.Join(courseResourceFieldNames, ",")
+	courseResourceRowsExpectAutoSet   = strings.Join(stringx.Remove(courseResourceFieldNames, "`id`", "`create_at`", "`create_time`", "`created_at`", "`update_at`", "`update_time`", "`updated_at`"), ",")
+	courseResourceRowsWithPlaceHolder = strings.Join(stringx.Remove(courseResourceFieldNames, "`id`", "`create_at`", "`create_time`", "`created_at`", "`update_at`", "`update_time`", "`updated_at`"), "=?,") + "=?"
+)
+
+type (
+	courseResourceModel interface {
+		Insert(ctx context.Context, data *CourseResource) (sql.Result, error)
+		FindOne(ctx context.Context, id int64) (*CourseResource, error)
+		Update(ctx context.Context, data *CourseResource) error
+		Delete(ctx context.Context, id int64) error
+	}
+
+	defaultCourseResourceModel struct {
+		conn  sqlx.SqlConn
+		table string
+	}
+
+	CourseResource struct {
+		Id          int64  `db:"id"`           // 资源ID（主键，自增）
+		CourseId    int64  `db:"course_id"`    // 关联课程ID
+		Title       string `db:"title"`        // 资源标题（如“第1章课件.pdf”）
+		ResourceUrl string `db:"resource_url"` // 资源文件URL
+		Size        int64  `db:"size"`         // 文件大小（KB，默认0）
+		Sort        int64  `db:"sort"`         // 排序（数值越小越靠前）
+	}
+)
+
+func newCourseResourceModel(conn sqlx.SqlConn) *defaultCourseResourceModel {
+	return &defaultCourseResourceModel{
+		conn:  conn,
+		table: "`course_resource`",
+	}
+}
+
+func (m *defaultCourseResourceModel) Delete(ctx context.Context, id int64) error {
+	query := fmt.Sprintf("delete from %s where `id` = ?", m.table)
+	_, err := m.conn.ExecCtx(ctx, query, id)
+	return err
+}
+
+func (m *defaultCourseResourceModel) FindOne(ctx context.Context, id int64) (*CourseResource, error) {
+	query := fmt.Sprintf("select %s from %s where `id` = ? limit 1", courseResourceRows, m.table)
+	var resp CourseResource
+	err := m.conn.QueryRowCtx(ctx, &resp, query, id)
+	switch err {
+	case nil:
+		return &resp, nil
+	case sqlx.ErrNotFound:
+		return nil, ErrNotFound
+	default:
+		return nil, err
+	}
+}
+
+func (m *defaultCourseResourceModel) Insert(ctx context.Context, data *CourseResource) (sql.Result, error) {
+	query := fmt.Sprintf("insert into %s (%s) values (?, ?, ?, ?, ?)", m.table, courseResourceRowsExpectAutoSet)
+	ret, err := m.conn.ExecCtx(ctx, query, data.CourseId, data.Title, data.ResourceUrl, data.Size, data.Sort)
+	return ret, err
+}
+
+func (m *defaultCourseResourceModel) Update(ctx context.Context, data *CourseResource) error {
+	query := fmt.Sprintf("update %s set %s where `id` = ?", m.table, courseResourceRowsWithPlaceHolder)
+	_, err := m.conn.ExecCtx(ctx, query, data.CourseId, data.Title, data.ResourceUrl, data.Size, data.Sort, data.Id)
+	return err
+}
+
+func (m *defaultCourseResourceModel) tableName() string {
+	return m.table
+}

server/internal/course_resource/internal/model/vars.go

@@ -0,0 +1,5 @@
+package model
+
+import "github.com/zeromicro/go-zero/core/stores/sqlx"
+
+var ErrNotFound = sqlx.ErrNotFound