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Flask API endpoint that retrieves a specific statistical interpretation template by ID from a JSON file and returns its details including template content, name, and description.

Purpose

This endpoint serves as part of a SmartStat service API, allowing clients to fetch predefined statistical interpretation templates. These templates are likely used to generate standardized statistical analysis interpretations. The function reads from a local JSON file containing template definitions and returns the requested template if found, or appropriate error responses if the template or file doesn't exist.

Source Code

def get_statistical_interpretation_template(template_id):
    """Get specific statistical interpretation template"""
    try:
        from pathlib import Path
        templates_file = Path(__file__).parent / "statistical_interpretation_templates.json"
        
        if templates_file.exists():
            with open(templates_file, 'r') as f:
                templates = json.load(f)
            
            if template_id in templates:
                return jsonify({
                    'template': templates[template_id]['template'],
                    'name': templates[template_id]['name'],
                    'description': templates[template_id]['description']
                })
            else:
                return jsonify({'error': 'Template not found'}), 404
        else:
            return jsonify({'error': 'Templates file not found'}), 404
    
    except Exception as e:
        logger.error(f"Error loading interpretation template {template_id}: {e}")
        return jsonify({'error': 'Failed to load template'}), 500

Parameters

Parameter Details

template_id: String identifier for the specific statistical interpretation template to retrieve. This ID is used as a key to look up the template in the statistical_interpretation_templates.json file. The value comes from the URL path parameter in the route '/api/smartstat/interpretation-templates/<template_id>'.

Return Value

Returns a Flask JSON response tuple. On success (200): JSON object with keys 'template' (template content), 'name' (template name), and 'description' (template description). On template not found (404): JSON object with 'error' key set to 'Template not found'. On file not found (404): JSON object with 'error' key set to 'Templates file not found'. On exception (500): JSON object with 'error' key set to 'Failed to load template'. All error responses include appropriate HTTP status codes.

Dependencies

• flask
• pathlib
• json
• logging

Required Imports

from flask import jsonify
from pathlib import Path
import json

Conditional/Optional Imports

These imports are only needed under specific conditions:

from pathlib import Path

Usage Example

# Assuming Flask app setup and authentication decorator are configured
# Example templates file structure (statistical_interpretation_templates.json):
# {
#   "correlation_analysis": {
#     "name": "Correlation Analysis",
#     "description": "Template for interpreting correlation results",
#     "template": "The correlation coefficient of {r} indicates..."
#   }
# }

# Client-side usage (HTTP request):
import requests

response = requests.get(
    'http://localhost:5000/api/smartstat/interpretation-templates/correlation_analysis',
    headers={'Authorization': 'Bearer YOUR_AUTH_TOKEN'}
)

if response.status_code == 200:
    data = response.json()
    print(f"Template: {data['template']}")
    print(f"Name: {data['name']}")
    print(f"Description: {data['description']}")
else:
    print(f"Error: {response.json()['error']}")

Best Practices

• The function uses lazy import of Path inside the function body, which is generally not recommended for performance in frequently-called endpoints
• Error handling is comprehensive with try-except block and appropriate HTTP status codes
• The function logs errors using a logger instance, which is good for debugging and monitoring
• Consider caching the templates file content to avoid repeated file I/O operations on each request
• The templates file path is resolved relative to the current module using __file__, making it portable
• Authentication is enforced via the require_auth decorator, ensuring secure access
• Returns consistent JSON error responses with descriptive messages
• Consider validating template_id format to prevent potential path traversal issues if the implementation changes
• The function assumes the templates JSON structure has specific keys ('template', 'name', 'description') - ensure this is documented or validated

Tags

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