添加教学案例实现层

server/internal/teaching_case/internal/model/teachingcasemodel.go

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

server/internal/teaching_case/internal/model/teachingcasemodel_gen.go

@@ -0,0 +1,94 @@
+// Code generated by goctl. DO NOT EDIT.
+// versions:
+//  goctl version: 1.9.2
+
+package model
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/zeromicro/go-zero/core/stores/builder"
+	"github.com/zeromicro/go-zero/core/stores/sqlx"
+	"github.com/zeromicro/go-zero/core/stringx"
+)
+
+var (
+	teachingCaseFieldNames          = builder.RawFieldNames(&TeachingCase{})
+	teachingCaseRows                = strings.Join(teachingCaseFieldNames, ",")
+	teachingCaseRowsExpectAutoSet   = strings.Join(stringx.Remove(teachingCaseFieldNames, "`id`", "`create_at`", "`create_time`", "`created_at`", "`update_at`", "`update_time`", "`updated_at`"), ",")
+	teachingCaseRowsWithPlaceHolder = strings.Join(stringx.Remove(teachingCaseFieldNames, "`id`", "`create_at`", "`create_time`", "`created_at`", "`update_at`", "`update_time`", "`updated_at`"), "=?,") + "=?"
+)
+
+type (
+	teachingCaseModel interface {
+		Insert(ctx context.Context, data *TeachingCase) (sql.Result, error)
+		FindOne(ctx context.Context, id int64) (*TeachingCase, error)
+		Update(ctx context.Context, data *TeachingCase) error
+		Delete(ctx context.Context, id int64) error
+	}
+
+	defaultTeachingCaseModel struct {
+		conn  sqlx.SqlConn
+		table string
+	}
+
+	TeachingCase struct {
+		Id           int64     `db:"id"`            // 案例ID（主键）
+		Title        string    `db:"title"`         // 案例标题
+		TutorName    string    `db:"tutor_name"`    // 导师姓名
+		TutorTitle   string    `db:"tutor_title"`   // 导师头衔（如：XX讲师）
+		StudentNames string    `db:"student_names"` // 学生姓名（多人用逗号分隔，如“张三,李四”）
+		Content      string    `db:"content"`       // 案例内容（详细描述）
+		CoverUrl     string    `db:"cover_url"`     // 案例封面图URL
+		Sort         int64     `db:"sort"`          // 排序（数字越小越靠前）
+		CreateTime   time.Time `db:"create_time"`   // 创建时间
+		UpdateTime   time.Time `db:"update_time"`   // 更新时间
+	}
+)
+
+func newTeachingCaseModel(conn sqlx.SqlConn) *defaultTeachingCaseModel {
+	return &defaultTeachingCaseModel{
+		conn:  conn,
+		table: "`teaching_case`",
+	}
+}
+
+func (m *defaultTeachingCaseModel) 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 *defaultTeachingCaseModel) FindOne(ctx context.Context, id int64) (*TeachingCase, error) {
+	query := fmt.Sprintf("select %s from %s where `id` = ? limit 1", teachingCaseRows, m.table)
+	var resp TeachingCase
+	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 *defaultTeachingCaseModel) Insert(ctx context.Context, data *TeachingCase) (sql.Result, error) {
+	query := fmt.Sprintf("insert into %s (%s) values (?, ?, ?, ?, ?, ?, ?)", m.table, teachingCaseRowsExpectAutoSet)
+	ret, err := m.conn.ExecCtx(ctx, query, data.Title, data.TutorName, data.TutorTitle, data.StudentNames, data.Content, data.CoverUrl, data.Sort)
+	return ret, err
+}
+
+func (m *defaultTeachingCaseModel) Update(ctx context.Context, data *TeachingCase) error {
+	query := fmt.Sprintf("update %s set %s where `id` = ?", m.table, teachingCaseRowsWithPlaceHolder)
+	_, err := m.conn.ExecCtx(ctx, query, data.Title, data.TutorName, data.TutorTitle, data.StudentNames, data.Content, data.CoverUrl, data.Sort, data.Id)
+	return err
+}
+
+func (m *defaultTeachingCaseModel) tableName() string {
+	return m.table
+}

server/internal/teaching_case/internal/model/vars.go

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