c# - HandleBars .Net If Comparision -


i use handlebars .net mail templates generate template @ server side width asp.net mvc. need comparision this. doest't work? can do? 

//product.prodtype enum property   {{#if (product.prodtype=='blablabla')}} <p>this test</p> {{/if}}

i had same problem , created helper function "ifcond" works numeric data types , string. can optimized or expanded work other types.

handlebars.registerhelper("ifcond",         (writer, context, args) =>         {             if (args.length != 5)             {                 writer.write("ifcond:wrong number of arguments");                 return;             }              if (args[0] == null || args[0].gettype().name == "undefinedbindingresult")             {                 writer.write("ifcond:args[0] undefined");                 return;             }             if (args[1] == null || args[1].gettype().name == "undefinedbindingresult")             {                 writer.write("ifcond:args[1] undefined");                 return;             }             if (args[2] == null || args[2].gettype().name == "undefinedbindingresult")             {                 writer.write("ifcond:args[2] undefined");                 return;             }              if (args[0].gettype().name == "string")             {                 string val1 = args[0].tostring();                 string val2 = args[2].tostring();                  switch (args[1].tostring())                 {                     case ">":                         writer.write(val1.length > val2.length ? args[3] : args[4]);                         break;                     case "=":                     case "==":                         writer.write(val1 == val2 ? args[3] : args[4]);                         break;                     case "<":                         writer.write(val1.length < val2.length ? args[3] : args[4]);                         break;                     case "!=":                     case "<>":                         writer.write(val1 != val2 ? args[3] : args[4]);                         break;                 }             }             else             {                 float val1 = float.parse(args[0].tostring());                 float val2 = float.parse(args[2].tostring());                  switch (args[1].tostring())                 {                     case ">":                         writer.write(val1 > val2 ? args[3] : args[4]);                         break;                     case "=":                     case "==":                         writer.write(val1 == val2 ? args[3] : args[4]);                         break;                     case "<":                         writer.write(val1 < val2 ? args[3] : args[4]);                         break;                     case "<=":                         writer.write(val1 <= val2 ? args[3] : args[4]);                         break;                     case ">=":                         writer.write(val1 >= val2 ? args[3] : args[4]);                         break;                     case "!=":                     case "<>":                         writer.write(val1 != val2 ? args[3] : args[4]);                         break;                 }             }

and here unit test explaining usage :

var template = handlebars.compile("{{{ifcond test '>' 1 '>1' '<=1' }}}"); var data = new { test = 2 }; var result = template(data); assert.areequal(">1", result);  data = new { test = 0 }; result = template(data); assert.areequal("<=1", result);  template = handlebars.compile("{{{ifcond test '=' 1 'eq' 'not eq' }}}"); data = new { test = 1 }; result = template(data); assert.areequal("eq", result);  data = new { test = 0 }; result = template(data); assert.areequal("not eq", result);  template = handlebars.compile("{{{ifcond test '!=' 1 'diff' 'eq' }}}"); data = new { test = 2 }; result = template(data); assert.areequal("diff", result);  template = handlebars.compile("{{{ifcond str '!=' '' 'not empty' 'empty' }}}"); var datastr = new { str = "abc" }; result = template(datastr); assert.areequal("not empty", result);  template = handlebars.compile("{{{ifcond str '==' '' 'empty' 'not empty' }}}"); datastr = new { str = "" }; result = template(datastr); assert.areequal("empty", result);

hope helps, , hope better implementation, more elegant, solution works think can done in more concise way.

here usage example int32 value inside template:

{{ifcond mycountvariable '>' 1 'more one' 'one'}}

and here usage example string value inside template:

{{ifcond mystringvariable '!=' '' mystringvariable 'empty value'}}

Comments

Post a Comment

Popular posts from this blog

How to connect android app to App engine -

i'm trying connect app in android server i've opened on appengine. my server's name : dddd-daniel-2345 , website server : http://dddd-daniel-2345.appspot.com/ this how connect android app server in app engine: app.yaml: application: dddd-daniel-2345 version: 1 runtime: python27 api_version: 1 threadsafe: yes handlers: - url: .* script: main.app libraries: - name: webapp2 version: "2.5.2" main.py: #!/usr/bin/env python # # copyright 2007 google inc. google.appengine.api import users import webapp2 class userhandler(webapp2.requesthandler): def get(self): user = users.get_current_user() if user: greeting = ('%s,%s,%s' % (user.email(),user.user_id(),user.nickname())) else: greeting = ('not logged in') self.response.out.write(greeting) app = webapp2.wsgiapplication([('/', userhandler),], debug=true) my applications code : add manifast main....
Read more

gcc - MinGW's ld cannot perform PE operations on non PE output file -

i know there other similar questions out there, stackoverflow or not. i've researched lot this, , still didn't find single solution. i'm doing operative system side project. i've been doing in assembly, wanna join c code. test, made assembly code file (called test.asm): [bits 32] global _a section .text _a: jmp $ then made c file (called main.c): extern void a(void); int main(void) { a(); } to link, used file (called make.bat): "c:\mingw\bin\gcc.exe" -ffreestanding -c -o c.o main.c nasm -f coff -o asm.o test.asm "c:\mingw\bin\ld.exe" -ttext 0x100000 --oformat binary -o out.bin c.o asm.o pause i've been researching ages, , i'm still struggling find answer. hope won't flagged duplicate. acknowledge existence of similar questions, have different answers, , none work me. question: what doing wrong? old mingw versions had problem "ld" not able create non-pe files @ all. maybe current versions...
Read more

php - display validation error message next to the textbox in codeigniter -

Image
i'm newbie codeigniter.i want display error message next text box.my view file create.php contains following code. <?php echo validation_errors(); //validation echo form_open('news/create'); //create form ?> <div class="boxes"> <div class="common"> <div class="lables"> <label for="name">name</label> </div> <div class="text_boxes"> <input type="text" name="uname" /><div id="infomessage"><?php echo $message;?></br> </div> </div>` and below controller model: public function create() { $this->load->helper('form'); $this->load->library('form_validation'); $data['title'] = 'insert items'; $this->form_validation->set_rules('uname','required|min_length[6]|m...
Read more