Search engine realizes keyword highlighting

Our idea to realize keyword highlighting is to use html sentence . About to use keywords html The sentences are wrapped up , The commonly used sentences are <span style="font-weght:bold"></span>、<span style="color:xxx"></span>, among xxx You can put English names of common colors （white）, Or hexadecimal color code （#ffffff）.

Query and get data sets data The code for is as follows ：

  here data The data structure in is as follows ：

  You can see the queried data （ Far right ） It is encapsulated into one by one Message object , Splice into a list list, Finally put in QuerySet Data sets data in .

Now let's put every piece of data title、info Keywords in the field are html The parcel , Think of the replace function （ Replace the specified string ）; Again because Django On safety grounds , The default output is html Statement does not take effect , You use django.utils.safestring Under the make_safe Method , The code is as follows ：

for j in range(0,keyCount):
            dict['list'+str(i)].title = mark_safe(dict['list'+str(i)].title.replace(key[j],'<span style="color:red;">%s</span>'%key[j]))
            dict['list'+str(i)].info = mark_safe(dict['list'+str(i)].info.replace(key[j],'<span style="color:red;">%s</span>'%key[j]))

among dict['list'+str(i)] Yes, I will Paginator The data after paging is encapsulated into a dictionary , The values in key value pairs are one by one Message class ;key[j] Is the current keyword , adopt keyCount Cycle twice to add all keywords before and after html Code , The final visual effect is as follows ：

Django Use mark_safe（） and format_html（） function https://wenku.baidu.com/view/06013ca6bad528ea81c758f5f61fb7360b4c2b3c.html