WordPress – WP REST API v2, CRUD usuarios con Jquery Ajax

Para crear, leer, actualizar y eliminar usuarios de WordPress (Create, Read, Update y Delete) usando la WP REST API v2 desde un script Jquery Ajax procedemos a:

• En el documento Html creamos los botones que harán la llamada a Jquery Ajax:

<a href="#" id="create" class='btn btn-info'>Create</a>
<a href="#" id="read" class='btn btn-info'>Read</a>
<a href="#" id="update" class='btn btn-info'>Update</a>
<a href="#" id="delete" class='btn btn-info'>Delete</a>

• En el script agregamos la función de encriptación base64:

/**
*
*  Base64 encode / decode
*  http://www.webtoolkit.info/
*
**/
var Base64 = {

// private property
_keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",

// public method for encoding
encode : function (input) {
    var output = "";
    var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
    var i = 0;

    input = Base64._utf8_encode(input);

    while (i < input.length) {

        chr1 = input.charCodeAt(i++);
        chr2 = input.charCodeAt(i++);
        chr3 = input.charCodeAt(i++);

        enc1 = chr1 >> 2;
        enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
        enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
        enc4 = chr3 & 63;

        if (isNaN(chr2)) {
            enc3 = enc4 = 64;
        } else if (isNaN(chr3)) {
            enc4 = 64;
        }

        output = output +
        this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) +
        this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);

    }

    return output;
},

// public method for decoding
decode : function (input) {
    var output = "";
    var chr1, chr2, chr3;
    var enc1, enc2, enc3, enc4;
    var i = 0;

    input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

    while (i < input.length) {

        enc1 = this._keyStr.indexOf(input.charAt(i++));
        enc2 = this._keyStr.indexOf(input.charAt(i++));
        enc3 = this._keyStr.indexOf(input.charAt(i++));
        enc4 = this._keyStr.indexOf(input.charAt(i++));

        chr1 = (enc1 << 2) | (enc2 >> 4);
        chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
        chr3 = ((enc3 & 3) << 6) | enc4;

        output = output + String.fromCharCode(chr1);

        if (enc3 != 64) {
            output = output + String.fromCharCode(chr2);
        }
        if (enc4 != 64) {
            output = output + String.fromCharCode(chr3);
        }

    }

    output = Base64._utf8_decode(output);

    return output;

},

// private method for UTF-8 encoding
_utf8_encode : function (string) {
    string = string.replace(/\r\n/g,"\n");
    var utftext = "";

    for (var n = 0; n < string.length; n++) {

        var c = string.charCodeAt(n);

        if (c < 128) {
            utftext += String.fromCharCode(c);
        }
        else if((c > 127) && (c < 2048)) {
            utftext += String.fromCharCode((c >> 6) | 192);
            utftext += String.fromCharCode((c & 63) | 128);
        }
        else {
            utftext += String.fromCharCode((c >> 12) | 224);
            utftext += String.fromCharCode(((c >> 6) & 63) | 128);
            utftext += String.fromCharCode((c & 63) | 128);
        }

    }

    return utftext;
},

// private method for UTF-8 decoding
_utf8_decode : function (utftext) {
    var string = "";
    var i = 0;
    var c = c1 = c2 = 0;

    while ( i < utftext.length ) {

        c = utftext.charCodeAt(i);

        if (c < 128) {
            string += String.fromCharCode(c);
            i++;
        }
        else if((c > 191) && (c < 224)) {
            c2 = utftext.charCodeAt(i+1);
            string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
            i += 2;
        }
        else {
            c2 = utftext.charCodeAt(i+1);
            c3 = utftext.charCodeAt(i+2);
            string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
            i += 3;
        }

    }

    return string;
}
}

• Además agregamos en el script las llamadas Ajax para Create, Read, Update y Delete:

$(document).ready(function(){
    // Create
    $('#create').click(function(e) 
    {        
        $.ajax({
            url: 'https://midominio.com/wp-json/wp/v2/users',
            type: 'POST',
            crossDomain: true,
            beforeSend: function ( xhr ) {
                xhr.setRequestHeader( 'Authorization', 'Basic ' + Base64.encode( 'usuario:password' ) );
            },
            data: {username: 'pedroperez', password : 'pedro123', email : '[email protected]', first_name : 'Pedro', last_name : 'Pérez'},
            success: function( data, txtStatus, xhr ) {
                console.log( data.username );
                console.log( xhr.status );
            },
            error: function (xhr, ajaxOptions, thrownError) {
                console.log(xhr.status);
                console.log(thrownError);
            }
        }); 
    });

    // Read
    $('#read').click(function(e) 
    {
        $.ajax({
            url: 'https://midominio.com/wp-json/wp/v2/users/10',
            type: 'GET',
            crossDomain: true,
            beforeSend: function ( xhr ) {
                xhr.setRequestHeader( 'Authorization', 'Basic ' + Base64.encode( 'usuario:password' ) );
            },
                success: function( data, txtStatus, xhr ) {
                console.log( data.name );
                console.log( data);
                console.log( xhr.status );
            },
            error: function (xhr, ajaxOptions, thrownError) {
                console.log(xhr.status);
                console.log(thrownError);
            }
        });
    ;});

    // Update
    $('#update').click(function(e) 
    {
        $.ajax({
            url: 'https://midominio.com/wp-json/wp/v2/users/10',
            type: 'PUT',
            crossDomain: true,
            beforeSend: function ( xhr ) {
                xhr.setRequestHeader( 'Authorization', 'Basic ' + Base64.encode( 'usuario:password' ) );
            },
            data: {name: 'Pedro Santaella'},
            success: function( data, txtStatus, xhr ) {
                console.log( data.username );
                console.log( xhr.status );
            },
            error: function (xhr, ajaxOptions, thrownError) {
                console.log(xhr.status);
                console.log(thrownError);
            }
        });
    });

    // Delete 
    $('#delete').click(function(e) 
    {
        $.ajax({
            url: 'https://midominio.com/wp-json/wp/v2/users/10',
            method: 'DELETE',
            crossDomain: true,
            beforeSend: function ( xhr ) {
                xhr.setRequestHeader( 'Authorization', 'Basic ' + Base64.encode( 'usuario:password' ) );
            },
            data: {force : 'true', reassign : 1},
            success: function( data, txtStatus, xhr ) {
                console.log( data );
                console.log( xhr.status );
            },
            error: function (xhr, ajaxOptions, thrownError) {
                console.log( xhr.status );
                console.log( thrownError );
            }
        });     
    });
});

• En la operación Delete se deben pasar en la variable data los parámetros: 'force' : true y 'reassign' : idDelUsuarioAlCualSeLeAsignaranLosPostDelUsuarioQueSePretendeEliminar