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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##
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.
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
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##
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  .
•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 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##
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:
•Template files processing rules (Files.txt)
