summaryrefslogtreecommitdiffhomepage
path: root/coldfusion.html.markdown
blob: 97259f567545be2ba4860a92fc2d2bdac3dcdc2d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
---
language: coldfusion
filename: learncoldfusion.cfm
contributors:
    - ["Wayne Boka", "http://wboka.github.io"]
    - ["Kevin Morris", "https://twitter.com/kevinmorris"]
---

ColdFusion is a scripting language for web development.
[Read more here.](http://www.adobe.com/products/coldfusion-family.html)

### CFML
_**C**old**F**usion **M**arkup **L**anguage_  
ColdFusion started as a tag-based language. Almost all functionality is available using tags.

```cfm
<em>HTML tags have been provided for output readability</em>

<!--- Comments start with "<!---" and end with "--->" --->
<!---
    Comments can
    also
    span
    multiple lines
--->

<!--- CFML tags have a similar format to HTML tags. --->
<h1>Simple Variables</h1>
<!--- Variable Declaration: Variables are loosely typed, similar to javascript --->
<p>Set <b>myVariable</b> to "myValue"</p>
<cfset myVariable = "myValue" />
<p>Set <b>myNumber</b> to 3.14</p>
<cfset myNumber = 3.14 />

<!--- Displaying simple data --->
<!--- Use <cfoutput> for simple values such as strings, numbers, and expressions --->
<p>Display <b>myVariable</b>: <cfoutput>#myVariable#</cfoutput></p><!--- myValue --->
<p>Display <b>myNumber</b>: <cfoutput>#myNumber#</cfoutput></p><!--- 3.14 --->

<hr />

<h1>Complex Variables</h1>
<!--- Declaring complex variables --->
<!--- Declaring an array of 1 dimension: literal or bracket notation --->
<p>Set <b>myArray1</b> to an array of 1 dimension using literal or bracket notation</p>
<cfset myArray1 = [] />
<!--- Declaring an array of 1 dimension: function notation --->
<p>Set <b>myArray2</b> to an array of 1 dimension using function notation</p>
<cfset myArray2 = ArrayNew(1) />

<!--- Outputting complex variables --->
<p>Contents of <b>myArray1</b></p>
<cfdump var="#myArray1#" /> <!--- An empty array object --->
<p>Contents of <b>myArray2</b></p>
<cfdump var="#myArray2#" /> <!--- An empty array object --->

<!--- Operators --->
<!--- Arithmetic --->
<h1>Operators</h1>
<h2>Arithmetic</h2>
<p>1 + 1 = <cfoutput>#1 + 1#</cfoutput></p>
<p>10 - 7 = <cfoutput>#10 - 7#<br /></cfoutput></p>
<p>15 * 10 = <cfoutput>#15 * 10#<br /></cfoutput></p>
<p>100 / 5 = <cfoutput>#100 / 5#<br /></cfoutput></p>
<p>120 % 5 = <cfoutput>#120 % 5#<br /></cfoutput></p>
<p>120 mod 5 = <cfoutput>#120 mod 5#<br /></cfoutput></p>

<hr />

<!--- Comparison --->
<h2>Comparison</h2>
<h3>Standard Notation</h3>
<p>Is 1 eq 1? <cfoutput>#1 eq 1#</cfoutput></p>
<p>Is 15 neq 1? <cfoutput>#15 neq 1#</cfoutput></p>
<p>Is 10 gt 8? <cfoutput>#10 gt 8#</cfoutput></p>
<p>Is 1 lt 2? <cfoutput>#1 lt 2#</cfoutput></p>
<p>Is 10 gte 5? <cfoutput>#10 gte 5#</cfoutput></p>
<p>Is 1 lte 5? <cfoutput>#1 lte 5#</cfoutput></p>

<h3>Alternative Notation</h3>
<p>Is 1 == 1? <cfoutput>#1 eq 1#</cfoutput></p>
<p>Is 15 != 1? <cfoutput>#15 neq 1#</cfoutput></p>
<p>Is 10 > 8? <cfoutput>#10 gt 8#</cfoutput></p>
<p>Is 1 < 2? <cfoutput>#1 lt 2#</cfoutput></p>
<p>Is 10 >= 5? <cfoutput>#10 gte 5#</cfoutput></p>
<p>Is 1 <= 5? <cfoutput>#1 lte 5#</cfoutput></p>

<hr />

<!--- Control Structures --->
<h1>Control Structures</h1>

<cfset myCondition = "Test" />

<p>Condition to test for: "<cfoutput>#myCondition#</cfoutput>"</p>

<cfif myCondition eq "Test">
    <cfoutput>#myCondition#. We're testing.</cfoutput>
<cfelseif myCondition eq "Production">
    <cfoutput>#myCondition#. Proceed Carefully!!!</cfoutput>
<cfelse>
    myCondition is unknown
</cfif>

<hr />

<!--- Loops --->
<h1>Loops</h1>
<h2>For Loop</h2>
<cfloop from="0" to="10" index="i">
	<p>Index equals <cfoutput>#i#</cfoutput></p>
</cfloop>

<h2>For Each Loop (Complex Variables)</h2>

<p>Set <b>myArray3</b> to [5, 15, 99, 45, 100]</p>

<cfset myArray3 = [5, 15, 99, 45, 100] />

<cfloop array="#myArray3#" index="i">
	<p>Index equals <cfoutput>#i#</cfoutput></p>
</cfloop>

<p>Set <b>myArray4</b> to ["Alpha", "Bravo", "Charlie", "Delta", "Echo"]</p>

<cfset myArray4 = ["Alpha", "Bravo", "Charlie", "Delta", "Echo"] />

<cfloop array="#myArray4#" index="s">
	<p>Index equals <cfoutput>#s#</cfoutput></p>
</cfloop>

<h2>Switch Statement</h2>

<p>Set <b>myArray5</b> to [5, 15, 99, 45, 100]</p>

<cfset myArray5 = [5, 15, 99, 45, 100] />

<cfloop array="#myArray5#" index="i">
	<cfswitch expression="#i#">
		<cfcase value="5,15,45" delimiters=",">
			<p><cfoutput>#i#</cfoutput> is a multiple of 5.</p>
		</cfcase>
		<cfcase value="99">
			<p><cfoutput>#i#</cfoutput> is ninety-nine.</p>
		</cfcase>
		<cfdefaultcase>
			<p><cfoutput>#i#</cfoutput> is not 5, 15, 45, or 99.</p>
		</cfdefaultcase> 
	</cfswitch> 
</cfloop>

<hr />

<h1>Converting types</h1>

<style>
	table.table th, table.table td {
		border: 1px solid #000000;
		padding: 2px;
	}
	
	table.table th {
		background-color: #CCCCCC;
	}
</style>

<table class="table" cellspacing="0">
	<thead>
		<tr>
			<th>Value</th>
			<th>As Boolean</th>
			<th>As number</th>
			<th>As date-time</th>
			<th>As string</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<th>"Yes"</th>
			<td>TRUE</td>
			<td>1</td>
			<td>Error</td>
			<td>"Yes"</td>
		</tr>
		<tr>
			<th>"No"</th>
			<td>FALSE</td>
			<td>0</td>
			<td>Error</td>
			<td>"No"</td>
		</tr>
		<tr>
			<th>TRUE</th>
			<td>TRUE</td>
			<td>1</td>
			<td>Error</td>
			<td>"Yes"</td>
		</tr>
		<tr>
			<th>FALSE</th>
			<td>FALSE</td>
			<td>0</td>
			<td>Error</td>
			<td>"No"</td>
		</tr>
		<tr>
			<th>Number</th>
			<td>True if Number is not 0; False otherwise.</td>
			<td>Number</td>
			<td>See &#34;Date-time values&#34; earlier in this chapter.</td>
			<td>String representation of the number (for example, &#34;8&#34;).</td>
		</tr>
		<tr>
			<th>String</th>
			<td>If "Yes", True <br>If "No", False <br>If it can be converted to 0, False <br>If it can be converted to any other number, True</td>
			<td>If it represents a number (for example, &#34;1,000&#34; or &#34;12.36E-12&#34;), it is converted to the corresponding number.</td>
			<td>If it represents a date-time (see next column), it is converted to the numeric value of the corresponding date-time object. <br>If it is an ODBC date, time, or timestamp (for example &#34;{ts &#39;2001-06-14 11:30:13&#39;}&#34;, or if it is expressed in a standard U.S. date or time format, including the use of full or abbreviated month names, it is converted to the corresponding date-time value. <br>Days of the week or unusual punctuation result in an error. <br>Dashes, forward-slashes, and spaces are generally allowed.</td>
			<td>String</td>
		</tr>
		<tr>
			<th>Date</th>
			<td>Error</td>
			<td>The numeric value of the date-time object.</td>
			<td>Date</td>
			<td>An ODBC timestamp.</td>
		</tr>
	</tbody>
</table>

<hr />

<h1>Components</h1>

<em>Code for reference (Functions must return something to support IE)</em>
```
```cfs
<cfcomponent>
	<cfset this.hello = "Hello" />
	<cfset this.world = "world" />

	<cffunction name="sayHello">
		<cfreturn this.hello & ", " & this.world & "!" />
	</cffunction>
	
	<cffunction name="setHello">
		<cfargument name="newHello" type="string" required="true" />
		
		<cfset this.hello = arguments.newHello />
		 
		<cfreturn true />
	</cffunction>
	
	<cffunction name="setWorld">
		<cfargument name="newWorld" type="string" required="true" />
		
		<cfset this.world = arguments.newWorld />
		 
		<cfreturn true />
	</cffunction>
	
	<cffunction name="getHello">
		<cfreturn this.hello />
	</cffunction>
	
	<cffunction name="getWorld">
		<cfreturn this.world />
	</cffunction>
</cfcomponent>

<cfset this.hello = "Hello" />
<cfset this.world = "world" />

<cffunction name="sayHello">
	<cfreturn this.hello & ", " & this.world & "!" />
</cffunction>

<cffunction name="setHello">
	<cfargument name="newHello" type="string" required="true" />
	
	<cfset this.hello = arguments.newHello />
	 
	<cfreturn true />
</cffunction>

<cffunction name="setWorld">
	<cfargument name="newWorld" type="string" required="true" />
	
	<cfset this.world = arguments.newWorld />
	 
	<cfreturn true />
</cffunction>

<cffunction name="getHello">
	<cfreturn this.hello />
</cffunction>

<cffunction name="getWorld">
	<cfreturn this.world />
</cffunction>


<b>sayHello()</b>
<cfoutput><p>#sayHello()#</p></cfoutput>
<b>getHello()</b>
<cfoutput><p>#getHello()#</p></cfoutput>
<b>getWorld()</b>
<cfoutput><p>#getWorld()#</p></cfoutput>
<b>setHello("Hola")</b>
<cfoutput><p>#setHello("Hola")#</p></cfoutput>
<b>setWorld("mundo")</b>
<cfoutput><p>#setWorld("mundo")#</p></cfoutput>
<b>sayHello()</b>
<cfoutput><p>#sayHello()#</p></cfoutput>
<b>getHello()</b>
<cfoutput><p>#getHello()#</p></cfoutput>
<b>getWorld()</b>
<cfoutput><p>#getWorld()#</p></cfoutput>
```

### CFScript
_**C**old**F**usion **S**cript_  
In recent years, the ColdFusion language has added script syntax to mirror tag functionality. When using an up-to-date CF server, almost all functionality is available using scrypt syntax.

## Further Reading

The links provided here below are just to get an understanding of the topic, feel free to Google and find specific examples.

1. [Coldfusion Reference From Adobe](https://helpx.adobe.com/coldfusion/cfml-reference/topics.html)
2. [Open Source Documentation](http://cfdocs.org/)