Babbar matsalar da ke da alaƙa da kalmar tacewa ta fi girma ita ce cewa tana iya sa ma’adanar bayanai ta yi nauyi. Wannan na iya haifar da al'amurran da suka shafi aiki kuma, a wasu lokuta, kurakurai.
You can use the built-in Django template filter called "length" to get the number of words in a string:
{{ my_string|length }}
Wannan lambar tana amfani da matatar samfurin Django da ake kira "tsawon" don samun adadin kalmomi a cikin kirtani.
CD
Tace kayan aiki ne mai ƙarfi a cikin Django. Suna ba ku damar canza bayanan da aka wuce zuwa gani ko samfuri. Ana iya amfani da matattara don rage adadin bayanan da aka tura zuwa gani ko samfuri, ko don tsara bayanan da aka wuce zuwa gani ko samfuri.
Akwai nau'ikan matattara guda biyu a cikin Django: masu tacewa da masu tacewa. Ana amfani da tacewa don sarrafa bayanan da aka wuce zuwa gani ko samfuri. Ana amfani da matattarar gabatarwa don keɓance yadda ake nuna bayanan a gani ko samfuri.
Don ƙirƙirar tacewa, da farko kuna buƙatar ƙirƙirar misali na ajin Filter. Ajin Tace yana da hanyoyi guda biyu: tace() da amfani(). Hanyar tace () tana ɗaukar kalmar Python sabani a matsayin hujjar sa kuma ta dawo da ƙimar boolean mai nuna ko furcin ya yi nasara wajen tace bayanan. Hanyar apply() tana ɗaukar misalin ajin Duba azaman gardama kuma tana amfani da matatar da aka bayar ga bayanan da ke cikin wannan misalin.
Counters
Ƙidaya tsarin bayanai ne wanda ke lura da adadin lokutan da aka sami wani abu na musamman. Ana amfani da ma'auni sau da yawa a cikin aikace-aikacen bayanai don kiyaye adadin abubuwa nawa aka ƙara, sabunta, ko sharewa.
