introduccion a mvc con codeigniter

7/23/2019 Introduccion a MVC con Codeigniter

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By @t_carlosochoa

INTRODUCTION TO MVC WEB F

RAMEWORK WITH CODEIGNITER


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WHAT IS MVC?


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WHAT IS MVC?

A Design Pattern

Stands for Model, ViewandController

Separate Business Logic fromPresentation Logic


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MODEL-VIEW-CONTROLLER

Model

ViewControll

er


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MODEL

Represents data

Hold data structure Usually (but not always)backed by

database

Contains data related logic

i.e. determine whether today is userbirthday or not


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CONTROLLER

Holds business logic

Handling Input!utput "otify model#s$ of user action

Use %iew#s$ for presentation


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VIEW

How data will be displayed to user

Holds presentation logic i.e. looping through a set of data to be

displayed


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MVC AND THE WEB


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MVC FOR WEB


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MVC WEB FRAMEWORK

Ru

by

Ruby onRails

MerbEtc.

Pyth

on

DjangoPylonsTurboGea

rsEtc.

PHP

CodeIgniter

CakePHPend

!ra"ework

Etc.


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INTRODUCTION TO

CODEIGNITER


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INSTALLATION -> YOU GOT

IT


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INITIAL CONFIGURATION:

CONFIG.PHP

A&&'ICA(I!"C!")I*

+cong-base/url0 1 http2codeigniter.co3

+cong-inde4/page0 1 5inde4.php3

(! 6A78 (HIS 9!R7, :!U "88; (! I"C'U;8 A" .H(

ACC8SS )I'8 (! (H8 C!;8I*"I(8R R!!( ;IR8C(!R:


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DEFAULT SETTINGS

+C!")I*-CHARS8(0 1 ?3

+C!")I*-CACH8/&A(H0 1 3

+C!")I*-'!*/;A(8/)!R6A(0 1 :=6=; H2I2S3

+C!")I*-*'!@A'/SS/)I'(8RI"*0 1 )A'S83

+C!")I*-'A"*UA*801 8"*'ISH3

+C!")I*-8"CR:&(I!"/78:0 1 3

8(C.


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CODEIGNITER URLS

C!;8I*"I(8R.C!I";8.&H&"89SAR(IC'86:/AR(IC'8B8(8

news Controller

article class function

my/article = any additional segments

I) :!U ;! "!( US8 C!;8I*"I(8R, :!UR UR'S IS2

8A6&'8.C!6"89S.&H&D6!;81SH!9EI;1F


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REMOVING THE INDEX.PHP

FILE (APACHE)

@: ;8)AU'(, (H8 I";8.&H& )I'8 9I'' @8 I"C'U;8; I":!UR UR'S2

C!;8I*"I(8R.C!I";8.&H&"89SAR(IC'86:/AR(IC'8

USI"* A .H(ACC8SS )I'8 9I(H S!68 SI6&'8 RU'8S

8dit httpd.conf

Unmark 'oad6odule rewrite/module modulesmod/rewrite.so

RewriteEngine on

RewriteCond $1 !^(index\.ppi"agesrobots\.txt#

RewriteRule ^(.#$ %index.pp%$1 &'


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ADDING A URL SUFFIX

8;I( C!")I*C!")I*.&H& )I'8

C!;8I*"I(8RI";8.&H&&R!;UC(SGI89SH!8S

8A6&'8.C!6I";8.&H&&R!;UC(SGI89SH!8S.H(6'


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WHAT IS A CONTROLLER?

C!;8I*"I(8R.C!I";8.&H&@'!*

(H8" SAG8 (H8 )I'8 (! :!UR A&&'ICA(I!"C!"(R!''8RS )!';8R


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CONTROLLER

C'ASS "A68S 6US( S(AR( 9I(H A" U&&8RCAS8'8((8R. I" !(H8R 9!R;S

class Blog e4tends CI/Controller


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FUNCTIONS - METHODS

8A6&'8.C!6I";8.&H&@'!*INDEX

8A6&'8.C!6I";8.&H&@'!*COMMENTS


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FUNCTION CALLS

+(HIS=J+68(H!;#$3


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PASSING URI SEGMENTS TO YOUR

FUNCTIONS

8A6&'8.C!6I";8.&H&&R!;UC(SSH!8SSA";A'SFKB


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DEFINING A DEFAULT CONTROLLER

!&8" :!UR A&&'ICA(I!"C!")I*R!U(8S.&H& )I'8 A";S8( (HIS GARIA@'82

+R!U(8-;8)AU'(/C!"(R!''8R0 1 @'!*3


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URI ROUTING: ROUTES.PHP

R!U(I"* RU'8S AR8 ;8)I"8; I" :!UR A&&'ICA(I!"C!")I*R!U(8S.&H& )I'8

8A6&'8.C!6C'ASS)U"C(I!"I;

H((&2999.8A6&'8.C!6SI(8&A*8SL

H((&2999.8A6&'8.C!6A@!U(/US

+R!U(8-A@!U(/US0 1


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REGULAR EXPRESSIONS

+R!U(8-&R!;UC(S#-A=O0P$#Q;P$0 1 N+FI;/+KN3

+R!U(8-;8)AU'(/C!"(R!''8R0 1 98'C!6853


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CLASS CONSTRUCTORS

I" &H&


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EXERCISE

R86!(8 I";8.&H& 9I(H UR'.

9RI(8 C!"(R!''8R "89S

"89S C!"(AI"S SH!9"89S'IS( A"; SH!9"89S)U"C(I!".

US8 +(HIS=J+68(H!;#$3 (! CA'' SH!9"89S'IS(A"; SH!9"89S )U"C(I!" I" I";8 )U"C(I!", (H8"8CH! H8''! 9!R';

S8( U&'!A; ;IR8C(!R: GA'U8 I" C'ASSC!"S(RUC(!RS

+(HIS=JU&'!A;/)!';8R 1 U&'!A;"89S3


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CREATING A VIEW

SAG8 (H8 )I'8 I" :!UR A&&'ICA(I!"GI89S )!';8R


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LOADING A VIEW

+(HIS=J'!A;=JGI89#"A68$3

C!;8I*"I(8R.C!@'!*


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LOADING MULTIPLE VIEWS

+(HIS=J'!A;=JGI89#"A68$3

8A6&'8.C!6I";8.&H&@'!*


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STORING VIEWS WITHIN SU

B-FOLDERS

+(HIS=J'!A;=JGI89#)!';8R/"A68)I'8/"A68$3

)!';8R/"A68 IS C!"(R!''8R "A68


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ADDING DYNAMIC DATA TO

THE VIEW

:!U CA" US8 A" ARRA: !R A" !@M8C( I" (H8 S8C!";&ARA68(8R !) (H8 GI89 '!A;I"* )U"C(I!".


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EXCERCISE

CR8A(8 A&&'ICA(I!"GI89SH8A;8R.&H& A";

)!!(8R.&H&

)U"C(I!" "U6@8R#+"U6/F, +"U6/K$, !U(&U( )I'8A&&'ICA(I!"GI89S!U(&U(I";8.&H&

8A6&'8.C!6!U(&U("U6@8R

8A6&'8.C!6!U(&U("U6@8RFTL


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ANY UESTION?


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THANK YOU

introduccion a mvc con codeigniter

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