[Python #14] [Django #7] 搜索我的文章 #2

in #hive-1050172 months ago

pixabay

改了一点上回实现的搜索功能的逻辑。每当搜索文章发现这并不是我所需要的。之前的逻辑是搜索所有的tag, title, body值,即,tag OR title OR body。
tag和title/text本身就不是一个性质,所以不能这样实现。通常搜索,都是先搜索tag,然后在下级继续搜索title或者body。也就是说tag AND (title OR body) 。

哎~ 事先没明确设计,导致出现如此问题。没办法,只能再次改逻辑了。
顺便都改为python的类。虽然我不太懂python的类到底哪里好。(#当作学习#python初学者)

services.py
  1. 在 services.py 创建类,之后新建account, q_titles, q_texts, q_tags, blogs 类变量。
  2. 创建 init 函数,定义参数 query 并赋值给类变量
  3. 添加 search_posts 函数。
    当tag为空或者有匹配值时继续检查title或body,并且把匹配值装入另一个list里。
  4. 另创建 is_keywords_contains 函数,内部检查 title 和 body 值。
  5. 创建一个 get_tags 函数
import json
from steem import Steem


class Search:
    s = Steem()
    account = 'june0620'
    q_titles = []
    q_texts = []
    q_tags = []
    blogs = []

    def __init__(self, query: dict):
        self.q_titles = list(filter(None, query['titles']))
        self.q_texts = list(filter(None, query['texts']))
        self.q_tags = list(filter(None, query['tags']))
        self.blogs = self.s.get_blog(self.account, 0, 400)

    def search_posts(self):
        s_blogs = []
        for blog in self.blogs:
            blog_data = blog['comment']
            title = blog_data['title'].lower()
            body = blog_data['body'].lower()
            tags = self.get_tags(blog_data['json_metadata'])
            if not self.q_tags or set(self.q_tags) & set(tags):
                if not self.q_titles and not self.q_texts:
                    s_blogs.append(blog)
                elif self.is_keywords_contains(title, body):
                    s_blogs.append(blog)
        return s_blogs

    def is_keywords_contains(self, title: str, body: str) -> bool:

        if any(q_title in title for q_title in self.q_titles):
            return True
        if any(q_text in body for q_text in self.q_texts):
            return True
        return False

    def get_tags(self, json_metadata: str) -> list:
        '''
        steempython의 get_blog()함수의 json_metadata값이 str이므로 list로 변환
        '''
        metadata = json.loads(json_metadata)
        if metadata:
            return metadata['tags']
        else:
            return []


views.py

继承 django的 ListView,把文章目录装入 queryset 一并映射到 html。

from django.http import HttpResponse
from django.views.generic import ListView
from .services import Search
from steem import Steem

s = Steem()


def main_view(request):
    data = s.get_account('june0620')
    response = HttpResponse()
    response.write(data)
    return response


class posts(ListView):
    template_name = 'album.html'
    context_object_name = 'all_posts'

    def get(self, request, *args, **kwargs):
        # self.queryset = s.get_blog(kwargs['account'], entry_id=0, limit=100)
        query = {
            'tags': ['kr'],
            'titles': ['python'],
            'texts': ['사랑하겠습니다']
        }
        se = Search(query=query)
        self.queryset = se.search_posts()
        return super().get(request, *args, **kwargs)

Results

经简单测试,未发现问题。
下回学习 django 的 test 功能,再好好测试一番。


[Cookie 😅]
Python 3.7.4
Django 2.2.4
steem-python 1.0.1
goorm IDE 1.3

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