Django template system-Filter

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Filter, variable display form change

I. Format: lower case

{Name | lower }}

 

2. concatenation: Escape text to HTML first, and then convert each line to the <p> tag

{My_text | escape | linebreaks }}

 

3. filter parameters

Display the first 30 words
{Bio | truncatewords: "30 "}}

Format
{Pub_date | date: "F j, Y "}}

 

Filter list

{123 | add: "5"} adds a value to the value.

{"AB 'CD" | addslashes} is enclosed by an escape number in single quotes and is generally used for output to javascript.

{"Abcd" | capfirst} uppercase letters

{"Abcd" | center: "50"} output a string of the specified length, and set the value

{"123spam456spam789" | cut: "spam "}
{Value | date: "F j, Y"} format the date.

{Value | default: "(N/A)"} the specified value does not exist.

{Value | default_if_none: "(N/A)"} the value is None, and the specified value is used.

{List variable | dictsort: "Number"} is sorted from small to large.

{List variable | dictsortreversed: "Number "}

{% If 92 | divisibleby: "2" %} determines whether the specified number is divisible.

{String | escape} to html Entity

{21984124 | filesizeformat} is based on 1024 and calculates the maximum value. It retains 1 decimal place to increase readability.

{List | first} returns the first element of the list.

{"Ik23hr & jqwh" | fix_ampersands} & convert to & amp;

{13.414121241 | floatformat} retains one decimal number, which can be negative.

{13.414121241 | floatformat: "2"} Keep 2 decimal places

{23456 | get_digit: "1"} truncates one number at a specified position from the single digit.

{List | join: ","} connects to the list using the specified separator

{List | length} returned list count

{% If list | length_is: "3" %} whether the number of lists is a specified value

{"ABCD" | linebreaks} use <p> and <br/> to mark the package with a new line.

{"ABCD" | linebreaksbr} use a new line to mark the package with <br/>

{Variable | linenumbers} adds a row number to each row of the variable.

{"Abcd" | ljust: "50"} adds the string to the left in the specified width, and fills the other string with spaces.

{"ABCD" | lower} lower case

{% For I in "1abc1" | make_list %} ABCDE, {% endfor %} takes the number of characters of a string or number as a list

{"Abcdefghijklmnopqrstuvwxyz" | phone2numeric} converts the character into a corresponding number ??

The plural form of {list or number | pluralize} word. If the number of strings in the list is greater than 1, return s. Otherwise, return an empty string.

{List or number | pluralize: "es"} specifies es

{List or number | pluralize: "y, ies"} replace specified ies with y

{Object | pprint} displays the value of an object.

{List | random} returns a random entry in the list.

{String | removetags: "br p div"} Delete the html Tag specified in the string

{String | must ust: "50"} fill the string in the specified width to the right, and fill other strings with spaces.

{List | slice: ": 2"} slice

The {string | slugify} string contains a minus sign and an underscore. Other symbols are deleted and spaces are replaced by a minus sign.

{3 | stringformat: "02i"} string format, using the string format Syntax of Python

{"E <A> A </A> B <C> C </C> D" | striptags} removes the [X] HTML syntax tag

{Time variable | time: "P"} date time part format

{Datetime | timesince} How long has the specified date passed?
{Datetime | timesince: "other_datetime "}

{Datetime | timeuntil} specifies how much time has elapsed since the date, which is different from the previous two dates.

{Datetime | timeuntil: "other_datetime "}
{"Abdsadf" | title} uppercase letters

{"A B C D E F" | truncatewords: "3"} intercepts A specified number of words

{"<A> 1 <a> 1 <a> 1 </a> 22 <a> 1 </a>" | truncatewords_html: "2"} intercepts the specified number of html tags and completes

<Ul >{{ list | unordered_list }}</ul> multiple nested lists are unordered html lists.
{String | upper} all uppercase letters

<A href = "{link | urlencode}"> linkage </a> url Encoding

{String | urlize} changes URLs from plain text to clickable links. (No lab succeeded)
{String | urlizetrunc: "30"} is the same as above. It contains multiple characters. (No lab is successful)

{"B C D E F" | wordcount} Number of words

{"A B c d e f g h I j k" | wordwrap: "5"} inserts a carriage return for each specified number of characters

{Boolean | yesno: "Yes, No, Perhaps"} return strings for the three values, which are non-null, null, and None.