Merge pull request #13 from fkammer/add-iban-filter

Add angular filter to display IBANs in a human-friendly format

README.adoc

@@ -31,3 +31,11 @@ Add `mm.iban` as a dependency of your AngularJS module.
 ----
 
 To use this directive the `ngModel` directive must also be used because this directive depends on it.
+
+=== filter
+[source,html]
+----
+IBAN: {{ string | iban:separator }}
+----
+
+The filter converts a given IBAN to it's human-friendly represantation. The separator defaults to a single space.

src/ng-iban.coffee

@@ -43,3 +43,18 @@ angular
           else modelValue
 
       return
+
+  .filter 'iban', ->
+    (string, separator) ->
+      parseIban = (value) ->
+        if value? then value.toUpperCase().replace /\s/g, '' else undefined
+
+      isValidIban = (value) ->
+        iban = parseIban(value)
+        IBAN.isValid iban
+
+      valid = isValidIban string
+      if valid
+        IBAN.printFormat string, separator
+      else
+        string

test/spec/ng-iban-filter.coffee

@@ -0,0 +1,22 @@
+'use strict'
+
+describe 'Filter: iban', ->
+
+  # load the filter's module
+  beforeEach module 'mm.iban'
+
+  filter = undefined
+
+  beforeEach inject ($filter) ->
+    filter = $filter 'iban'
+
+  it 'electronic IBAN should become print IBAN', ->
+    expect(filter('NL91ABNA0417164300')).toEqual 'NL91 ABNA 0417 1643 00'
+
+  it 'invalid IBAN should stay untouched', ->
+    expect(filter('INVALIDIBAN')).toEqual 'INVALIDIBAN'
+    expect(filter('NL90ABNA0417164300')).toEqual 'NL90ABNA0417164300'
+
+  it 'mind custom separator', ->
+    expect(filter('NL91ABNA0417164300', '-')).toEqual 'NL91-ABNA-0417-1643-00'
+    expect(filter('NL91ABNA0417164300', '')).toEqual 'NL91ABNA0417164300'