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Template language

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Template language is the framework that powers visual and code templates in ASPRunner.NET. Most template language expressions are references to the project files. Template language elements are wrapped by ## characters:

 

##if @field.m_bAddPage##

Expressions

1. Strings

Example:

 

"string1" - string1;

"this is a \"string\"" - this is a "string";

"\"\\\" is a backslash" - "\" is a backslash.

2. Numbers

Examples:

 

2

3.3

-2

3. Variables

Variables start with the @ character.

 

Examples:

 

@BUILDER - the root element of the project file.

@TABLE - a pseudo-variable that points to the currently selected table.

@a, @field - regular variables.

@TABLE.arrFieldObj - an array of fields that belong to the current table.

@field.EditFormatObj.m_strDefaultValue - the default field value.

 

Variables belong to one of the following data types: strings, numbers, objects and arrays.

4. Boolean expressions

0,"" - false.

Anything else - true.

Operators

1. Comparison operators

== - equals.

!= or <> - does not equal.

< - less than.

<= - less than or equal to.

> - greater than.

>= - greater than or equal to.

 

You can only compare numbers and strings. The comparison result can be either 0 or 1.

2. Boolean

or or ||

and or &&

not or !

 

The result can be either 0 or 1.

3. Parenthesis

Example:

 

(@field.m_bAddPage or @field.m_strLabel=="ID") and not @Table.m_strCaption==""

4. Dot operator

To access structure members, the dot . operator is used.

 

Example:

 

@field.m_ListFormatObj.m_nColWidth

5. The Array length property is '.len'

Example:

 

@TABLE.m_arrFieldObj.len

6. Priority order

There is an established order with the priority of each operator. From greatest to lowest, the priority order is as follows:

 

1. .

2. .len

3.parenthesis

4.comparison operators

5. not

6. and

7. or

Statements

1. Display a value of a variable or an expression

Examples:

 

##3## - displays 3.

##@field.m_bAddPage## - displays 0 or 1.

##@field.m_strLabel## - displays the field label, for example, 'Year of Make'.

2. Conditional statement

if <Boolean expression>, elseif <Boolean expression>, else, endif

 

Examples:

 

##if @field.m_bAddPage##
...
##elseif @field.m_strLabel=="ID"##
...
##else##
...
##endif##

3. Loop statements

1)

 

Foreach <array> as <variable> , endfor

 

The variable is created when loop starts and destroyed with the 'endfor'.

 

Example:

 

##foreach @TABLE.m_arrFieldObj as @field##
if strField="##@field.m_strName##" then  
 Label = "##@field.m_strLabel##"
##endfor##

 

2)

 

Repeat <number> [variable], endrepeat

 

Repeat the loop body N times. Variable, if specified, ranges from 1 to <number>.

 

3)

 

Filter

 

Allows nodes filtering.

 

Example. Get a list of fields that require validation:

 

##foreach @TABLE.m_arrFieldObj as @field filter @field.m_strValidateAs order @field. m_nEditPageOrder##
 ##if @first##
   include("include/validate.phpaspcs");
 ##endif##
##endfor##

 

4) Nested loops.

 

Repeat and Foreach loops can be nested.

 

Example:

 

##foreach @BUILDER.Tables as @t##
 ##foreach @t.arrMasterTables[[email protected]].arrMasterKeys as @dk##
 masterquery+="&masterkey##@index##="+MVCFunctions.RawUrlEncode((XVar)data["##@dk s##"]);
 ##endfor##
 showDetailKeys["##@t.strShortTableName##"]=masterquery;
##endfor##

 

5) Loop variable @index

 

The loop variable @index takes on the values 1, 2, ..., N through each of the N iterations of the loop body.

 

6) Pseudo-variables @first and @last

 

The @first variable takes the value of:

 

1 - during the first loop pass;

0 - otherwise.

 

It is useful when you need to perform some action only once, i.e., skip a comma in front of table name:

 

$tables = Array("Table1","Table2","Table3");
##if !@first## , ##endif##

 

In loops, @first terminates the execution of the nearest enclosing foreach or repeat statement. Control then passes to the statement that follows the terminated statement, if any:

 

##foreach @TABLE.m_arrFieldObj as @field##
##if @field.m_EditFormatObj. m_strValidateAs && @first##
 include("include/validate.phpaspcs");
##endif##
##endfor##

 

7) Order - a sort order other than default.

 

Example. Get a list of fields ordered by nEditPageOrder (the field order on the edit page):

 

##foreach @TABLE.m_arrFieldObj as @field order @field. nEditPageOrder##
##if @field.m_EditFormatObj. m_strValidateAs && @first ##
 include("include/validate.phpaspcs");
##endif##
##endfor##

Output modifiers

Modifiers are required to encode quotes, slashes and other characters that can break template language elements. You can combine several modifiers. Modifier order is important.

 

Example:

 

##@field.m_strLabel hs##

List of modifiers abbreviations:

hs - shapehtml is applied first, shapescript is applied after that.

s - replaces " with "".

q - strings wrapped by single quotes.

h - HTML-encodes the string.

j - replaces ' with \'.

n - replaces spaces with &nbsp.

u - URL-encodes the string.

w - adds wrappers around the field name ([field name] or `field name`).

t - adds wrappers around the table name ([dbo].[table name] or `table name`).

g - replaces all non alphanumeric characters with underscores.

p - builds the parameter name for UPDATE, INSERT, DELETE (.NET specific).

c - removes spaces.

8 - converts a UTF8 string to a national language charset.

o - removes the owner/schema from table name.

d - converts the name to CamelCase. Example: "Order details" becomes OrderDetails.

l - replaces line feeds and carriage returns with spaces.

a - builds a valid variable name from the table name.

f - builds a valid variable name from the field name.

x - builds a valid property name

y - builds a valid class name

Macros and constants

Macros and constants are processed and replaced with the actual code. Macros and constants are defined in the macros.txt file.

 

Constant definition example:

 

##define <name> <value>##
##define FORMAT_DATABASE_IMAGE "Database image"##
##define EDIT_DATE_SIMPLE 0##

 

Macro definition example:

 

##define UseRTE(@field)
(@field.strEditFormat==EDIT_FORMAT_TEXT_AREA && @field.m_EditFormatObj.m_bUseRTE)
##

 

Macros and constants are processed in the same way. Therefore, we suggest to follow this naming convention: constant names are written in upper case (e.g., FORMAT_DATABASE_IMAGE), macro names use CamelCase convention (e.g. UseCalendar). Spaces are not allowed in macro or constant names.

 

Example:

 

##if @field.strViewFormat==FORMAT_DATABASE_IMAGE##
##if UseRTE(@field)##
##foreach Fields as @f##
##Master.strCaption##

Additional language elements

Specific array element

 

To access a specific array element, use <array>[<condition>].

 

Example:

 

##@TABLE.arrFieldObj[[email protected]].strLabel##

 

This example shows how to access the Label property of a key column field or any other field.

See also:

ASPRunner.NET templates

Template files processing rules (Files.txt)