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@@ -18,7 +18,7 @@ class ChatroomService extends CrudService {
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assert(teacher, '缺少教师姓名');
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assert(studentid, '缺少学生id');
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assert(student, '缺少学生姓名');
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- const res = await this.model.find({ teacherid, teacher, studentid, student });
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+ const res = await this.model.findOne({ teacherid, teacher, studentid, student });
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if (res) return res;
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const cres = await this.model.create({ teacherid, teacher, studentid, student });
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return cres;
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