Reactjs React，当我调用handleSubmit()函数时，我正在将applicationjson和multiformdata中的数据发送到后端，但student_image中没有数据：null

我必须处理application/json和multiform/data,student_image: fileState，其中fileState是e.target.file[0]的值，这是图像和其他字段只有application/json将存储，但这fileState需要multiform/data，即使在改变后，我的图像也没有存储在数据库中.当我的API接受List对象时，如何将数据发送到API.在DRF中存储图像和models.py中的其他字段值有什么其他 idea 吗？

const handleSubmit = () => {
  let dataToSend = {};
          
  if (Array.isArray(formData)) {
    // Handle array data
    dataToSend = formData.map((formFields, index) => ({
    //     // Map the fields accordingly for each object in the array
    //     // Adjust this based on your data structure
      sn: formFields.sn,
      student_image: fileState,
      // Add other fields as needed
    }));
  } else if (typeof formData === 'object') {
    // dataToSend = [formData]
    // Handle object data
    dataToSend = [{
      // Map the fields accordingly for the object
      // Adjust this based on your data structure
      nepali: formData.nepali,
      international: formData.international,
      graduate_school_or_campus: formData.Campus,
      student_image: fileState,
      first_name: formData.first_name,
      middle_name: formData.middle_name,
      last_name: formData.last_name,
      email: formData.email,
      contact_no: formData.contact_no,
      gender: formData.gender,
      blood_group: formData.blood_group,
      ethnicity: formData.ethnicity,
      religion: formData.religion,
      date_of_birth_bs: formData.date_of_birth_bs,
      date_of_birth_ad: formData.date_of_birth_ad,
      batch: formData.batch,
      disability_status: formData.disability_status,
      sponsorship_status: formData.sponsorship_status,
      rural_district: formData.rural_district,
      martyr_lineage: formData.martyr_lineage,
      // citizenship_no: citizenship_no,
      // citizenship_image: formData.citizenship_image,
      school: formData.school,
      level: formData.level,
      program: formData.program,
      semester: formData.semester,
      status: formData.status,
      // 
      father_name: formData.father_name,
      mother_name: formData.mother_name,
      father_phone: formData.father_phone,
      mother_phone: formData.mother_phone,
      father_email: formData.father_email,
      mother_email: formData.mother_email,
      father_profession: formData.father_profession,
      mother_profession: formData.mother_profession,
      emergency_contact_name: formData.emergency_contact_name,
      emergency_contact_phone: formData.emergency_contact_phone,
      address: formData.address,
      relation_with_student: formData.relation_with_student,
      permanent_province: formData.permanent_province,
      permanent_district: formData.permanent_district,
      permanent_palika: formData.permanent_palika,
      permanent_ward_no: formData.permanent_ward_no,
      permanent_street_name: formData.permanent_street_name,
      permanent_house_no: formData.permanent_house_no,
      present_province: formData.present_province,
      present_district: formData.present_district,
      present_palika: formData.present_palika,
      present_ward_no: formData.present_ward_no,
      present_street_name: formData.present_street_name,
      present_house_no: formData.present_house_no,
      remarks: formData.remarks,
      education_history: formData.nestedForms,
      awardsMeritsScholarship: formData.nestedForms2
      // Add other fields as needed
    }];     
  }
        
  console.log('this is actual data', dataToSend);
  console.log('Type of dataToSend:', typeof dataToSend);
  // Now you can send a POST request with dataToSend to your APIw
  // For example using Axios or fetch
  // Replace 'YOUR_API_URL' with the actual API endpoint
  // Replace 'YOUR_ACCESS_TOKEN' with any authorization token you might need
  console.log("this is final data to sent", dataToSend)
  fetch(`${URL}`, {
    method: 'POST',
    headers: {
      // 'Content-Type': 'multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW', // Adjust the content type
      'Content-Type': 'application/json', // Adjust the content type
      'Authorization': `Bearer${Ttoken.access}`
    },
    body: JSON.stringify(dataToSend),
  })
    .then(response => response.json())
    .then(data => {
      console.log('Response from API:', data);
      // Additional logic after receiving a response from the API
    })
    .catch(error => {
      console.error('Error:', error);
      // Handle errors from the API call
    });
};