fix: csvTemplate error

[shaohuzhang1]

fix: csvTemplate error --bug=1052711 --user=王孝刚 【知识库】英文模式-文档-QA问答对-下载的csv模版内容错误 https://www.tapd.cn/57709429/s/1661565

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[shaohuzhang1]

The code you've provided is essentially exporting data from an application. However, there's a small mistake in the HttpResponse header:

1. Mistake in MIME Type:

   'Content-Type': 'text/csv'
   

This should be 'application/vnd.ms-excel' if you're exporting Excel files.

2. Correcting the Header:

Here's the corrected version of your code:

def export(self, with_valid=True):
    if self.data.get('type') == 'csv':
        file = open(os.path.join(PROJECT_DIR, "apps", "dataset", 'template', 
                            f'template_{self.uuid}.csv'), 'rb')
        content = file.read()
        file.close()
        return HttpResponse(content, status=200, headers={
            'Content-Type': 'application/csv',
            'Content-Disposition': f'attachment; filename="template_{self.uuid}.csv"'
        })
    elif self.data.get('type') == 'excel':
        # Your existing code to handle Excel export

Optimizations Suggested:

1. Error Handling:
   Add error handling to manage cases where the CSV/template files might not exist or cannot be read due to permissions.

2. Data Validation:
   Ensure that the data['type'] field is validated and only allows recognized types (CSV/Excel) before proceeding with the export logic.

3. Variable Naming:
   Consider using more descriptive variable names to improve readability.

4. UUID Generation:
   Implement generation of unique identifiers (self.uuid) dynamically instead of hardcoding it.

These suggestions ensure robustness and maintainability of the code.