如何解决我想为大数据自动选择两个 Select2 下拉列表的对应值
要求：-
网络框架 - Django
我收到了我公司的任务，其中我有两个 Select2 下拉菜单，分别是 X 和 Y，我正在使用 Pandas 库从 Excel 文件加载 X 和 Y 的值。
问题是 excel 文件的数据大小非常大，大约有 15k 条记录，他们想要一个功能，如果选择了任何下拉列表的值，那么也应该在另一个 select2 下拉列表中自动选择它们对应的值。
当我批量加载数据时，select2下拉列表滞后解决。
客户还要求他们在进行任何搜索之前单击以选择2下拉列表时希望看到选项。
我尝试过的：- 这是我的 index.html 文件
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<title>index2.html</title>
<link rel="stylesheet"
href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<link href="https://cdn.jsdelivr.net/npm/select2@4.1.0-beta.1/dist/css/select2.min.css"
rel="stylesheet" />
<style>
#id_language {
width: 100%;
}
</style>
</head>
<body>
<div class="container">
<h3>Select Anyone</h3>
<br>
<br>
<select name="language" id="id_fragname" class="w-50">
<option value="-1">Select Fragrance</option>
</select>
</div>
<br>
<br>
<div class="container">
<br>
<br>
<select name="language" id="id_fragcode" class="w-50">
<option value="-1">Select Code</option>
</select>
</div>
<script src="https://code.jquery.com/jquery-3.5.1.min.js" integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/select2@4.1.0-beta.1/dist/js/select2.min.js"></script>
<script>
//put your jquery code here
$(document).ready(function () {
//ajax request for getting the name
$('#id_fragname').select2({
ajax: {
url: '{% url 'home2' %}',dataType: 'json',processResults: function (data) {
return {
results: $.map(data,function (item) {
return {id: item.id,text: item.title};
})
};
}
},minimumInputLength: 1
});
//ajax request for getting the code
$('#id_fragcode').select2({
ajax: {
url: '{% url 'home' %}',minimumInputLength: 1
});
});
</script>
</body>
</html>
这是我的views.py文件
from django.shortcuts import render
from django.http import HttpResponse,JsonResponse
import pandas
from pandas import read_excel
my_sheet = 'Sheet1' # change it to your sheet name
file_name = 'staticfiles/excelfile/final_mapping.xlsx' # change it to the name of your excel file
df = read_excel(file_name,sheet_name = my_sheet)
data = dict()
k_code_list = df['Kcode'].tolist()
fragname_list = df['Fragname'].tolist()
for each_k_code in k_code_list:
if each_k_code not in data:
data[each_k_code] = fragname_list[k_code_list.index(each_k_code)]
#for finding the matching string from the name list
def get_matched_elements(strings,element):
print("get_matched_element function is called")
element = element.strip()
matched_found = []
if len(element) == 0:
try:
for each_element in strings[1000]:
matched_found.append({'id':strings.index(each_element),'title':each_element})
return matched_found
except:
pass
for string in strings:
## checking for the condition mentioned above
if string.lower().startswith(element.lower()) or element.lower().startswith(string.lower()):
## printing the eligible string
matched_found.append({'id':strings.index(string),'title':string})
else:
return matched_found
# Create your views here.
def indexpage(request):
return render(request,"app1/index2.html",{'codes':k_code_list,'fragrance':fragname_list})
def home(request,code=None,name=None):
if request.is_ajax():
term = request.GET.get('term')
content = get_matched_elements(k_code_list,term)
return JsonResponse(content,safe=False)
if request.method == "GET":
if code is not None:
return JsonResponse(data[code],safe=False)
def home2(request,name=None):
if request.is_ajax():
term = request.GET.get('term')
content = get_matched_elements(fragname_list,safe=False)
if request.method == "GET":
if name is not None:
res = k_code_list[fragname_list.index(name)]
return JsonResponse(res,safe=False)
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